add libs for micropython : netutils oofatfs

lib/netutils/netutils.c

@@ -0,0 +1,96 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2013, 2014 Damien P. George
+ * Copyright (c) 2015 Daniel Campora
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "py/obj.h"
+#include "py/nlr.h"
+#include "py/runtime.h"
+#include "lib/netutils/netutils.h"
+
+// Takes an array with a raw IPv4 address and returns something like '192.168.0.1'.
+mp_obj_t netutils_format_ipv4_addr(uint8_t *ip, netutils_endian_t endian) {
+    char ip_str[16];
+    mp_uint_t ip_len;
+    if (endian == NETUTILS_LITTLE) {
+        ip_len = snprintf(ip_str, 16, "%u.%u.%u.%u", ip[3], ip[2], ip[1], ip[0]);
+    } else {
+        ip_len = snprintf(ip_str, 16, "%u.%u.%u.%u", ip[0], ip[1], ip[2], ip[3]);
+    }
+    return mp_obj_new_str(ip_str, ip_len, false);
+}
+
+// Takes an array with a raw IP address, and a port, and returns a net-address
+// tuple such as ('192.168.0.1', 8080).
+mp_obj_t netutils_format_inet_addr(uint8_t *ip, mp_uint_t port, netutils_endian_t endian) {
+    mp_obj_t tuple[2] = {
+        tuple[0] = netutils_format_ipv4_addr(ip, endian),
+        tuple[1] = mp_obj_new_int(port),
+    };
+    return mp_obj_new_tuple(2, tuple);
+}
+
+void netutils_parse_ipv4_addr(mp_obj_t addr_in, uint8_t *out_ip, netutils_endian_t endian) {
+    size_t addr_len;
+    const char *addr_str = mp_obj_str_get_data(addr_in, &addr_len);
+    if (addr_len == 0) {
+        // special case of no address given
+        memset(out_ip, 0, NETUTILS_IPV4ADDR_BUFSIZE);
+        return;
+    }
+    const char *s = addr_str;
+    const char *s_top = addr_str + addr_len;
+    for (mp_uint_t i = 3 ; ; i--) {
+        mp_uint_t val = 0;
+        for (; s < s_top && *s != '.'; s++) {
+            val = val * 10 + *s - '0';
+        }
+        if (endian == NETUTILS_LITTLE) {
+            out_ip[i] = val;
+        } else {
+            out_ip[NETUTILS_IPV4ADDR_BUFSIZE - 1 - i] = val;
+        }
+        if (i == 0 && s == s_top) {
+            return;
+        } else if (i > 0 && s < s_top && *s == '.') {
+            s++;
+        } else {
+            mp_raise_ValueError("invalid arguments");
+        }
+    }
+}
+
+// Takes an address of the form ('192.168.0.1', 8080), returns the port and
+// puts IP in out_ip (which must take at least IPADDR_BUF_SIZE bytes).
+mp_uint_t netutils_parse_inet_addr(mp_obj_t addr_in, uint8_t *out_ip, netutils_endian_t endian) {
+    mp_obj_t *addr_items;
+    mp_obj_get_array_fixed_n(addr_in, 2, &addr_items);
+    netutils_parse_ipv4_addr(addr_items[0], out_ip, endian);
+    return mp_obj_get_int(addr_items[1]);
+}

lib/netutils/netutils.h

@@ -0,0 +1,50 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2013, 2014 Damien P. George
+ * Copyright (c) 2015 Daniel Campora
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#ifndef MICROPY_INCLUDED_LIB_NETUTILS_NETUTILS_H
+#define MICROPY_INCLUDED_LIB_NETUTILS_NETUTILS_H
+
+#define NETUTILS_IPV4ADDR_BUFSIZE    4
+
+typedef enum _netutils_endian_t {
+    NETUTILS_LITTLE,
+    NETUTILS_BIG,
+} netutils_endian_t;
+
+// Takes an array with a raw IPv4 address and returns something like '192.168.0.1'.
+mp_obj_t netutils_format_ipv4_addr(uint8_t *ip, netutils_endian_t endian);
+
+// Takes an array with a raw IP address, and a port, and returns a net-address
+// tuple such as ('192.168.0.1', 8080).
+mp_obj_t netutils_format_inet_addr(uint8_t *ip, mp_uint_t port, netutils_endian_t endian);
+
+void netutils_parse_ipv4_addr(mp_obj_t addr_in, uint8_t *out_ip, netutils_endian_t endian);
+
+// Takes an address of the form ('192.168.0.1', 8080), returns the port and
+// puts IP in out_ip (which must take at least IPADDR_BUF_SIZE bytes).
+mp_uint_t netutils_parse_inet_addr(mp_obj_t addr_in, uint8_t *out_ip, netutils_endian_t endian);
+
+#endif // MICROPY_INCLUDED_LIB_NETUTILS_NETUTILS_H

lib/oofatfs/diskio.h

@@ -0,0 +1,83 @@
+/* This file is part of ooFatFs, a customised version of FatFs
+ * See https://github.com/micropython/oofatfs for details
+ */
+
+/*-----------------------------------------------------------------------/
+/  Low level disk interface modlue include file   (C)ChaN, 2014          /
+/-----------------------------------------------------------------------*/
+
+#ifndef _DISKIO_DEFINED
+#define _DISKIO_DEFINED
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+
+/* Status of Disk Functions */
+typedef BYTE    DSTATUS;
+
+/* Results of Disk Functions */
+typedef enum {
+    RES_OK = 0,     /* 0: Successful */
+    RES_ERROR,      /* 1: R/W Error */
+    RES_WRPRT,      /* 2: Write Protected */
+    RES_NOTRDY,     /* 3: Not Ready */
+    RES_PARERR      /* 4: Invalid Parameter */
+} DRESULT;
+
+
+/*---------------------------------------*/
+/* Prototypes for disk control functions */
+
+
+DRESULT disk_read (void *drv, BYTE* buff, DWORD sector, UINT count);
+DRESULT disk_write (void *drv, const BYTE* buff, DWORD sector, UINT count);
+DRESULT disk_ioctl (void *drv, BYTE cmd, void* buff);
+
+
+/* Disk Status Bits (DSTATUS) */
+
+#define STA_NOINIT      0x01    /* Drive not initialized */
+#define STA_NODISK      0x02    /* No medium in the drive */
+#define STA_PROTECT     0x04    /* Write protected */
+
+
+/* Command code for disk_ioctrl fucntion */
+
+/* Generic command (Used by FatFs) */
+#define CTRL_SYNC           0   /* Complete pending write process (needed at _FS_READONLY == 0) */
+#define GET_SECTOR_COUNT    1   /* Get media size (needed at _USE_MKFS == 1) */
+#define GET_SECTOR_SIZE     2   /* Get sector size (needed at _MAX_SS != _MIN_SS) */
+#define GET_BLOCK_SIZE      3   /* Get erase block size (needed at _USE_MKFS == 1) */
+#define CTRL_TRIM           4   /* Inform device that the data on the block of sectors is no longer used (needed at _USE_TRIM == 1) */
+#define IOCTL_INIT          5
+#define IOCTL_STATUS        6
+
+/* Generic command (Not used by FatFs) */
+#define CTRL_POWER          5   /* Get/Set power status */
+#define CTRL_LOCK           6   /* Lock/Unlock media removal */
+#define CTRL_EJECT          7   /* Eject media */
+#define CTRL_FORMAT         8   /* Create physical format on the media */
+
+/* MMC/SDC specific ioctl command */
+#define MMC_GET_TYPE        10  /* Get card type */
+#define MMC_GET_CSD         11  /* Get CSD */
+#define MMC_GET_CID         12  /* Get CID */
+#define MMC_GET_OCR         13  /* Get OCR */
+#define MMC_GET_SDSTAT      14  /* Get SD status */
+#define ISDIO_READ          55  /* Read data form SD iSDIO register */
+#define ISDIO_WRITE         56  /* Write data to SD iSDIO register */
+#define ISDIO_MRITE         57  /* Masked write data to SD iSDIO register */
+
+/* ATA/CF specific ioctl command */
+#define ATA_GET_REV         20  /* Get F/W revision */
+#define ATA_GET_MODEL       21  /* Get model name */
+#define ATA_GET_SN          22  /* Get serial number */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

lib/oofatfs/ff.c

@@ -0,0 +1,5594 @@
+/* This file is part of ooFatFs, a customised version of FatFs
+ * See https://github.com/micropython/oofatfs for details
+ */
+
+/*----------------------------------------------------------------------------/
+/  FatFs - Generic FAT file system module  R0.12b                             /
+/-----------------------------------------------------------------------------/
+/
+/ Copyright (C) 2016, ChaN, all right reserved.
+/
+/ FatFs module is an open source software. Redistribution and use of FatFs in
+/ source and binary forms, with or without modification, are permitted provided
+/ that the following condition is met:
+
+/ 1. Redistributions of source code must retain the above copyright notice,
+/    this condition and the following disclaimer.
+/
+/ This software is provided by the copyright holder and contributors "AS IS"
+/ and any warranties related to this software are DISCLAIMED.
+/ The copyright owner or contributors be NOT LIABLE for any damages caused
+/ by use of this software.
+/----------------------------------------------------------------------------*/
+
+
+#include <string.h>
+
+#include "ff.h"         /* Declarations of FatFs API */
+#include "diskio.h"     /* Declarations of device I/O functions */
+
+// DIR has been renamed FF_DIR in the public API so it doesn't clash with POSIX
+#define DIR FF_DIR
+
+/*--------------------------------------------------------------------------
+
+   Module Private Definitions
+
+---------------------------------------------------------------------------*/
+
+#if _FATFS != 68020 /* Revision ID */
+#error Wrong include file (ff.h).
+#endif
+
+
+#define ABORT(fs, res)      { fp->err = (BYTE)(res); LEAVE_FF(fs, res); }
+
+
+/* Reentrancy related */
+#if _FS_REENTRANT
+#if _USE_LFN == 1
+#error Static LFN work area cannot be used at thread-safe configuration
+#endif
+#define ENTER_FF(fs)        { if (!lock_fs(fs)) return FR_TIMEOUT; }
+#define LEAVE_FF(fs, res)   { unlock_fs(fs, res); return res; }
+#else
+#define ENTER_FF(fs)
+#define LEAVE_FF(fs, res)   return res
+#endif
+
+
+
+/* Definitions of sector size */
+#if (_MAX_SS < _MIN_SS) || (_MAX_SS != 512 && _MAX_SS != 1024 && _MAX_SS != 2048 && _MAX_SS != 4096) || (_MIN_SS != 512 && _MIN_SS != 1024 && _MIN_SS != 2048 && _MIN_SS != 4096)
+#error Wrong sector size configuration
+#endif
+#if _MAX_SS == _MIN_SS
+#define SS(fs)  ((UINT)_MAX_SS) /* Fixed sector size */
+#else
+#define SS(fs)  ((fs)->ssize)   /* Variable sector size */
+#endif
+
+
+/* Timestamp */
+#if _FS_NORTC == 1
+#if _NORTC_YEAR < 1980 || _NORTC_YEAR > 2107 || _NORTC_MON < 1 || _NORTC_MON > 12 || _NORTC_MDAY < 1 || _NORTC_MDAY > 31
+#error Invalid _FS_NORTC settings
+#endif
+#define GET_FATTIME()   ((DWORD)(_NORTC_YEAR - 1980) << 25 | (DWORD)_NORTC_MON << 21 | (DWORD)_NORTC_MDAY << 16)
+#else
+#define GET_FATTIME()   get_fattime()
+#endif
+
+
+/* File lock controls */
+#if _FS_LOCK != 0
+#if _FS_READONLY
+#error _FS_LOCK must be 0 at read-only configuration
+#endif
+typedef struct {
+    FATFS *fs;      /* Object ID 1, volume (NULL:blank entry) */
+    DWORD clu;      /* Object ID 2, directory (0:root) */
+    DWORD ofs;      /* Object ID 3, directory offset */
+    WORD ctr;       /* Object open counter, 0:none, 0x01..0xFF:read mode open count, 0x100:write mode */
+} FILESEM;
+#endif
+
+
+
+/* DBCS code ranges and SBCS upper conversion tables */
+
+#if _CODE_PAGE == 932   /* Japanese Shift-JIS */
+#define _DF1S   0x81    /* DBC 1st byte range 1 start */
+#define _DF1E   0x9F    /* DBC 1st byte range 1 end */
+#define _DF2S   0xE0    /* DBC 1st byte range 2 start */
+#define _DF2E   0xFC    /* DBC 1st byte range 2 end */
+#define _DS1S   0x40    /* DBC 2nd byte range 1 start */
+#define _DS1E   0x7E    /* DBC 2nd byte range 1 end */
+#define _DS2S   0x80    /* DBC 2nd byte range 2 start */
+#define _DS2E   0xFC    /* DBC 2nd byte range 2 end */
+
+#elif _CODE_PAGE == 936 /* Simplified Chinese GBK */
+#define _DF1S   0x81
+#define _DF1E   0xFE
+#define _DS1S   0x40
+#define _DS1E   0x7E
+#define _DS2S   0x80
+#define _DS2E   0xFE
+
+#elif _CODE_PAGE == 949 /* Korean */
+#define _DF1S   0x81
+#define _DF1E   0xFE
+#define _DS1S   0x41
+#define _DS1E   0x5A
+#define _DS2S   0x61
+#define _DS2E   0x7A
+#define _DS3S   0x81
+#define _DS3E   0xFE
+
+#elif _CODE_PAGE == 950 /* Traditional Chinese Big5 */
+#define _DF1S   0x81
+#define _DF1E   0xFE
+#define _DS1S   0x40
+#define _DS1E   0x7E
+#define _DS2S   0xA1
+#define _DS2E   0xFE
+
+#elif _CODE_PAGE == 437 /* U.S. */
+#define _DF1S   0
+#define _EXCVT {0x80,0x9A,0x45,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F, \
+                0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+                0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
+                0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+                0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
+                0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+                0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
+                0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 720 /* Arabic */
+#define _DF1S   0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
+                0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+                0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
+                0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+                0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
+                0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+                0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
+                0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 737 /* Greek */
+#define _DF1S   0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
+                0x90,0x92,0x92,0x93,0x94,0x95,0x96,0x97,0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87, \
+                0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0xAA,0x92,0x93,0x94,0x95,0x96, \
+                0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+                0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
+                0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+                0x97,0xEA,0xEB,0xEC,0xE4,0xED,0xEE,0xEF,0xF5,0xF0,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
+                0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 771 /* KBL */
+#define _DF1S   0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
+                0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+                0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
+                0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+                0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
+                0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDC,0xDE,0xDE, \
+                0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+                0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFE,0xFF}
+
+#elif _CODE_PAGE == 775 /* Baltic */
+#define _DF1S   0
+#define _EXCVT {0x80,0x9A,0x91,0xA0,0x8E,0x95,0x8F,0x80,0xAD,0xED,0x8A,0x8A,0xA1,0x8D,0x8E,0x8F, \
+                0x90,0x92,0x92,0xE2,0x99,0x95,0x96,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
+                0xA0,0xA1,0xE0,0xA3,0xA3,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
+                0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+                0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
+                0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xA5,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+                0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE3,0xE8,0xE8,0xEA,0xEA,0xEE,0xED,0xEE,0xEF, \
+                0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 850 /* Latin 1 */
+#define _DF1S   0
+#define _EXCVT {0x43,0x55,0x45,0x41,0x41,0x41,0x41,0x43,0x45,0x45,0x45,0x49,0x49,0x49,0x41,0x41, \
+                0x45,0x92,0x92,0x4F,0x4F,0x4F,0x55,0x55,0x59,0x4F,0x55,0x4F,0x9C,0x4F,0x9E,0x9F, \
+                0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
+                0xB0,0xB1,0xB2,0xB3,0xB4,0x41,0x41,0x41,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+                0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0x41,0x41,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
+                0xD1,0xD1,0x45,0x45,0x45,0x49,0x49,0x49,0x49,0xD9,0xDA,0xDB,0xDC,0xDD,0x49,0xDF, \
+                0x4F,0xE1,0x4F,0x4F,0x4F,0x4F,0xE6,0xE8,0xE8,0x55,0x55,0x55,0x59,0x59,0xEE,0xEF, \
+                0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 852 /* Latin 2 */
+#define _DF1S   0
+#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xDE,0x8F,0x80,0x9D,0xD3,0x8A,0x8A,0xD7,0x8D,0x8E,0x8F, \
+                0x90,0x91,0x91,0xE2,0x99,0x95,0x95,0x97,0x97,0x99,0x9A,0x9B,0x9B,0x9D,0x9E,0xAC, \
+                0xB5,0xD6,0xE0,0xE9,0xA4,0xA4,0xA6,0xA6,0xA8,0xA8,0xAA,0x8D,0xAC,0xB8,0xAE,0xAF, \
+                0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBD,0xBF, \
+                0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC6,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
+                0xD1,0xD1,0xD2,0xD3,0xD2,0xD5,0xD6,0xD7,0xB7,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+                0xE0,0xE1,0xE2,0xE3,0xE3,0xD5,0xE6,0xE6,0xE8,0xE9,0xE8,0xEB,0xED,0xED,0xDD,0xEF, \
+                0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xEB,0xFC,0xFC,0xFE,0xFF}
+
+#elif _CODE_PAGE == 855 /* Cyrillic */
+#define _DF1S   0
+#define _EXCVT {0x81,0x81,0x83,0x83,0x85,0x85,0x87,0x87,0x89,0x89,0x8B,0x8B,0x8D,0x8D,0x8F,0x8F, \
+                0x91,0x91,0x93,0x93,0x95,0x95,0x97,0x97,0x99,0x99,0x9B,0x9B,0x9D,0x9D,0x9F,0x9F, \
+                0xA1,0xA1,0xA3,0xA3,0xA5,0xA5,0xA7,0xA7,0xA9,0xA9,0xAB,0xAB,0xAD,0xAD,0xAE,0xAF, \
+                0xB0,0xB1,0xB2,0xB3,0xB4,0xB6,0xB6,0xB8,0xB8,0xB9,0xBA,0xBB,0xBC,0xBE,0xBE,0xBF, \
+                0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
+                0xD1,0xD1,0xD3,0xD3,0xD5,0xD5,0xD7,0xD7,0xDD,0xD9,0xDA,0xDB,0xDC,0xDD,0xE0,0xDF, \
+                0xE0,0xE2,0xE2,0xE4,0xE4,0xE6,0xE6,0xE8,0xE8,0xEA,0xEA,0xEC,0xEC,0xEE,0xEE,0xEF, \
+                0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 857 /* Turkish */
+#define _DF1S   0
+#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0x49,0x8E,0x8F, \
+                0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x98,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9E, \
+                0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA6,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
+                0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+                0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
+                0xD0,0xD1,0xD2,0xD3,0xD4,0x49,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+                0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xDE,0xED,0xEE,0xEF, \
+                0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 860 /* Portuguese */
+#define _DF1S   0
+#define _EXCVT {0x80,0x9A,0x90,0x8F,0x8E,0x91,0x86,0x80,0x89,0x89,0x92,0x8B,0x8C,0x98,0x8E,0x8F, \
+                0x90,0x91,0x92,0x8C,0x99,0xA9,0x96,0x9D,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+                0x86,0x8B,0x9F,0x96,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
+                0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+                0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
+                0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+                0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
+                0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 861 /* Icelandic */
+#define _DF1S   0
+#define _EXCVT {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x8B,0x8B,0x8D,0x8E,0x8F, \
+                0x90,0x92,0x92,0x4F,0x99,0x8D,0x55,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
+                0xA4,0xA5,0xA6,0xA7,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
+                0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+                0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
+                0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+                0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
+                0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 862 /* Hebrew */
+#define _DF1S   0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
+                0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+                0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
+                0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+                0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
+                0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+                0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
+                0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 863 /* Canadian-French */
+#define _DF1S   0
+#define _EXCVT {0x43,0x55,0x45,0x41,0x41,0x41,0x86,0x43,0x45,0x45,0x45,0x49,0x49,0x8D,0x41,0x8F, \
+                0x45,0x45,0x45,0x4F,0x45,0x49,0x55,0x55,0x98,0x4F,0x55,0x9B,0x9C,0x55,0x55,0x9F, \
+                0xA0,0xA1,0x4F,0x55,0xA4,0xA5,0xA6,0xA7,0x49,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
+                0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+                0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
+                0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+                0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
+                0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 864 /* Arabic */
+#define _DF1S   0
+#define _EXCVT {0x80,0x9A,0x45,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F, \
+                0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+                0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
+                0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+                0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
+                0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+                0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
+                0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 865 /* Nordic */
+#define _DF1S   0
+#define _EXCVT {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F, \
+                0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+                0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
+                0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+                0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
+                0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+                0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF, \
+                0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 866 /* Russian */
+#define _DF1S   0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
+                0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+                0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
+                0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+                0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
+                0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+                0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+                0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 869 /* Greek 2 */
+#define _DF1S   0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F, \
+                0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x86,0x9C,0x8D,0x8F,0x90, \
+                0x91,0x90,0x92,0x95,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF, \
+                0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+                0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF, \
+                0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xA4,0xA5,0xA6,0xD9,0xDA,0xDB,0xDC,0xA7,0xA8,0xDF, \
+                0xA9,0xAA,0xAC,0xAD,0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xCF,0xCF,0xD0,0xEF, \
+                0xF0,0xF1,0xD1,0xD2,0xD3,0xF5,0xD4,0xF7,0xF8,0xF9,0xD5,0x96,0x95,0x98,0xFE,0xFF}
+
+#elif _CODE_PAGE == 1   /* ASCII (for only non-LFN cfg) */
+#if _USE_LFN != 0
+#error Cannot enable LFN without valid code page.
+#endif
+#define _DF1S   0
+
+#else
+#error Unknown code page
+
+#endif
+
+
+/* Character code support macros */
+#define IsUpper(c)  (((c)>='A')&&((c)<='Z'))
+#define IsLower(c)  (((c)>='a')&&((c)<='z'))
+#define IsDigit(c)  (((c)>='0')&&((c)<='9'))
+
+#if _DF1S != 0  /* Code page is DBCS */
+
+#ifdef _DF2S    /* Two 1st byte areas */
+#define IsDBCS1(c)  (((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E) || ((BYTE)(c) >= _DF2S && (BYTE)(c) <= _DF2E))
+#else           /* One 1st byte area */
+#define IsDBCS1(c)  ((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E)
+#endif
+
+#ifdef _DS3S    /* Three 2nd byte areas */
+#define IsDBCS2(c)  (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E) || ((BYTE)(c) >= _DS3S && (BYTE)(c) <= _DS3E))
+#else           /* Two 2nd byte areas */
+#define IsDBCS2(c)  (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E))
+#endif
+
+#else           /* Code page is SBCS */
+
+#define IsDBCS1(c)  0
+#define IsDBCS2(c)  0
+
+#endif /* _DF1S */
+
+
+/* File attribute bits (internal use) */
+#define AM_VOL      0x08    /* Volume label */
+#define AM_LFN      0x0F    /* LFN entry */
+#define AM_MASK     0x3F    /* Mask of defined bits */
+
+
+/* File access control and file status flags (internal use) */
+#define FA_SEEKEND  0x20    /* Seek to end of the file on file open */
+#define FA_MODIFIED 0x40    /* File has been modified */
+#define FA_DIRTY    0x80    /* FIL.buf[] needs to be written-back */
+
+
+/* Name status flags */
+#define NSFLAG      11      /* Index of name status byte in fn[] */
+#define NS_LOSS     0x01    /* Out of 8.3 format */
+#define NS_LFN      0x02    /* Force to create LFN entry */
+#define NS_LAST     0x04    /* Last segment */
+#define NS_BODY     0x08    /* Lower case flag (body) */
+#define NS_EXT      0x10    /* Lower case flag (ext) */
+#define NS_DOT      0x20    /* Dot entry */
+#define NS_NOLFN    0x40    /* Do not find LFN */
+#define NS_NONAME   0x80    /* Not followed */
+
+
+/* Limits and boundaries (differ from specs but correct for real DOS/Windows) */
+#define MAX_FAT12   0xFF5           /* Maximum number of FAT12 clusters */
+#define MAX_FAT16   0xFFF5          /* Maximum number of FAT16 clusters */
+#define MAX_FAT32   0xFFFFFF5       /* Maximum number of FAT32 clusters */
+#define MAX_EXFAT   0x7FFFFFFD      /* Maximum number of exFAT clusters (limited by implementation) */
+#define MAX_DIR     0x200000        /* Maximum size of FAT directory */
+#define MAX_DIR_EX  0x10000000      /* Maximum size of exFAT directory */
+
+
+/* FatFs refers the members in the FAT structures as byte array instead of
+/ structure members because the structure is not binary compatible between
+/ different platforms */
+
+#define BS_JmpBoot          0       /* x86 jump instruction (3-byte) */
+#define BS_OEMName          3       /* OEM name (8-byte) */
+#define BPB_BytsPerSec      11      /* Sector size [byte] (WORD) */
+#define BPB_SecPerClus      13      /* Cluster size [sector] (BYTE) */
+#define BPB_RsvdSecCnt      14      /* Size of reserved area [sector] (WORD) */
+#define BPB_NumFATs         16      /* Number of FATs (BYTE) */
+#define BPB_RootEntCnt      17      /* Size of root directory area for FAT12/16 [entry] (WORD) */
+#define BPB_TotSec16        19      /* Volume size (16-bit) [sector] (WORD) */
+#define BPB_Media           21      /* Media descriptor byte (BYTE) */
+#define BPB_FATSz16         22      /* FAT size (16-bit) [sector] (WORD) */
+#define BPB_SecPerTrk       24      /* Track size for int13h [sector] (WORD) */
+#define BPB_NumHeads        26      /* Number of heads for int13h (WORD) */
+#define BPB_HiddSec         28      /* Volume offset from top of the drive (DWORD) */
+#define BPB_TotSec32        32      /* Volume size (32-bit) [sector] (DWORD) */
+#define BS_DrvNum           36      /* Physical drive number for int13h (BYTE) */
+#define BS_NTres            37      /* Error flag (BYTE) */
+#define BS_BootSig          38      /* Extended boot signature (BYTE) */
+#define BS_VolID            39      /* Volume serial number (DWORD) */
+#define BS_VolLab           43      /* Volume label string (8-byte) */
+#define BS_FilSysType       54      /* File system type string (8-byte) */
+#define BS_BootCode         62      /* Boot code (448-byte) */
+#define BS_55AA             510     /* Signature word (WORD) */
+
+#define BPB_FATSz32         36      /* FAT32: FAT size [sector] (DWORD) */
+#define BPB_ExtFlags32      40      /* FAT32: Extended flags (WORD) */
+#define BPB_FSVer32         42      /* FAT32: File system version (WORD) */
+#define BPB_RootClus32      44      /* FAT32: Root directory cluster (DWORD) */
+#define BPB_FSInfo32        48      /* FAT32: Offset of FSINFO sector (WORD) */
+#define BPB_BkBootSec32     50      /* FAT32: Offset of backup boot sector (WORD) */
+#define BS_DrvNum32         64      /* FAT32: Physical drive number for int13h (BYTE) */
+#define BS_NTres32          65      /* FAT32: Error flag (BYTE) */
+#define BS_BootSig32        66      /* FAT32: Extended boot signature (BYTE) */
+#define BS_VolID32          67      /* FAT32: Volume serial number (DWORD) */
+#define BS_VolLab32         71      /* FAT32: Volume label string (8-byte) */
+#define BS_FilSysType32     82      /* FAT32: File system type string (8-byte) */
+#define BS_BootCode32       90      /* FAT32: Boot code (420-byte) */
+
+#define BPB_ZeroedEx        11      /* exFAT: MBZ field (53-byte) */
+#define BPB_VolOfsEx        64      /* exFAT: Volume offset from top of the drive [sector] (QWORD) */
+#define BPB_TotSecEx        72      /* exFAT: Volume size [sector] (QWORD) */
+#define BPB_FatOfsEx        80      /* exFAT: FAT offset from top of the volume [sector] (DWORD) */
+#define BPB_FatSzEx         84      /* exFAT: FAT size [sector] (DWORD) */
+#define BPB_DataOfsEx       88      /* exFAT: Data offset from top of the volume [sector] (DWORD) */
+#define BPB_NumClusEx       92      /* exFAT: Number of clusters (DWORD) */
+#define BPB_RootClusEx      96      /* exFAT: Root directory cluster (DWORD) */
+#define BPB_VolIDEx         100     /* exFAT: Volume serial number (DWORD) */
+#define BPB_FSVerEx         104     /* exFAT: File system version (WORD) */
+#define BPB_VolFlagEx       106     /* exFAT: Volume flags (BYTE) */
+#define BPB_ActFatEx        107     /* exFAT: Active FAT flags (BYTE) */
+#define BPB_BytsPerSecEx    108     /* exFAT: Log2 of sector size in byte (BYTE) */
+#define BPB_SecPerClusEx    109     /* exFAT: Log2 of cluster size in sector (BYTE) */
+#define BPB_NumFATsEx       110     /* exFAT: Number of FATs (BYTE) */
+#define BPB_DrvNumEx        111     /* exFAT: Physical drive number for int13h (BYTE) */
+#define BPB_PercInUseEx     112     /* exFAT: Percent in use (BYTE) */
+#define BPB_RsvdEx          113     /* exFAT: Reserved (7-byte) */
+#define BS_BootCodeEx       120     /* exFAT: Boot code (390-byte) */
+
+#define FSI_LeadSig         0       /* FAT32 FSI: Leading signature (DWORD) */
+#define FSI_StrucSig        484     /* FAT32 FSI: Structure signature (DWORD) */
+#define FSI_Free_Count      488     /* FAT32 FSI: Number of free clusters (DWORD) */
+#define FSI_Nxt_Free        492     /* FAT32 FSI: Last allocated cluster (DWORD) */
+
+#define MBR_Table           446     /* MBR: Offset of partition table in the MBR */
+#define SZ_PTE              16      /* MBR: Size of a partition table entry */
+#define PTE_Boot            0       /* MBR PTE: Boot indicator */
+#define PTE_StHead          1       /* MBR PTE: Start head */
+#define PTE_StSec           2       /* MBR PTE: Start sector */
+#define PTE_StCyl           3       /* MBR PTE: Start cylinder */
+#define PTE_System          4       /* MBR PTE: System ID */
+#define PTE_EdHead          5       /* MBR PTE: End head */
+#define PTE_EdSec           6       /* MBR PTE: End sector */
+#define PTE_EdCyl           7       /* MBR PTE: End cylinder */
+#define PTE_StLba           8       /* MBR PTE: Start in LBA */
+#define PTE_SizLba          12      /* MBR PTE: Size in LBA */
+
+#define DIR_Name            0       /* Short file name (11-byte) */
+#define DIR_Attr            11      /* Attribute (BYTE) */
+#define DIR_NTres           12      /* Lower case flag (BYTE) */
+#define DIR_CrtTime10       13      /* Created time sub-second (BYTE) */
+#define DIR_CrtTime         14      /* Created time (DWORD) */
+#define DIR_LstAccDate      18      /* Last accessed date (WORD) */
+#define DIR_FstClusHI       20      /* Higher 16-bit of first cluster (WORD) */
+#define DIR_ModTime         22      /* Modified time (DWORD) */
+#define DIR_FstClusLO       26      /* Lower 16-bit of first cluster (WORD) */
+#define DIR_FileSize        28      /* File size (DWORD) */
+#define LDIR_Ord            0       /* LFN entry order and LLE flag (BYTE) */
+#define LDIR_Attr           11      /* LFN attribute (BYTE) */
+#define LDIR_Type           12      /* LFN type (BYTE) */
+#define LDIR_Chksum         13      /* Checksum of the SFN entry (BYTE) */
+#define LDIR_FstClusLO      26      /* Must be zero (WORD) */
+#define XDIR_Type           0       /* Type of exFAT directory entry (BYTE) */
+#define XDIR_NumLabel       1       /* Number of volume label characters (BYTE) */
+#define XDIR_Label          2       /* Volume label (11-WORD) */
+#define XDIR_CaseSum        4       /* Sum of case conversion table (DWORD) */
+#define XDIR_NumSec         1       /* Number of secondary entries (BYTE) */
+#define XDIR_SetSum         2       /* Sum of the set of directory entries (WORD) */
+#define XDIR_Attr           4       /* File attribute (WORD) */
+#define XDIR_CrtTime        8       /* Created time (DWORD) */
+#define XDIR_ModTime        12      /* Modified time (DWORD) */
+#define XDIR_AccTime        16      /* Last accessed time (DWORD) */
+#define XDIR_CrtTime10      20      /* Created time subsecond (BYTE) */
+#define XDIR_ModTime10      21      /* Modified time subsecond (BYTE) */
+#define XDIR_CrtTZ          22      /* Created timezone (BYTE) */
+#define XDIR_ModTZ          23      /* Modified timezone (BYTE) */
+#define XDIR_AccTZ          24      /* Last accessed timezone (BYTE) */
+#define XDIR_GenFlags       33      /* Gneral secondary flags (WORD) */
+#define XDIR_NumName        35      /* Number of file name characters (BYTE) */
+#define XDIR_NameHash       36      /* Hash of file name (WORD) */
+#define XDIR_ValidFileSize  40      /* Valid file size (QWORD) */
+#define XDIR_FstClus        52      /* First cluster of the file data (DWORD) */
+#define XDIR_FileSize       56      /* File/Directory size (QWORD) */
+
+#define SZDIRE              32      /* Size of a directory entry */
+#define LLEF                0x40    /* Last long entry flag in LDIR_Ord */
+#define DDEM                0xE5    /* Deleted directory entry mark set to DIR_Name[0] */
+#define RDDEM               0x05    /* Replacement of the character collides with DDEM */
+
+
+
+
+
+/*--------------------------------------------------------------------------
+
+   Module Private Work Area
+
+---------------------------------------------------------------------------*/
+
+/* Remark: Variables here without initial value shall be guaranteed zero/null
+/  at start-up. If not, either the linker or start-up routine being used is
+/  not compliance with C standard. */
+
+#if _VOLUMES < 1 || _VOLUMES > 9
+#error Wrong _VOLUMES setting
+#endif
+static WORD Fsid;               /* File system mount ID */
+
+#if _FS_LOCK != 0
+static FILESEM Files[_FS_LOCK]; /* Open object lock semaphores */
+#endif
+
+#if _USE_LFN == 0           /* Non-LFN configuration */
+#define DEF_NAMBUF
+#define INIT_NAMBUF(fs)
+#define FREE_NAMBUF()
+#else
+#if _MAX_LFN < 12 || _MAX_LFN > 255
+#error Wrong _MAX_LFN setting
+#endif
+
+#if _USE_LFN == 1       /* LFN enabled with static working buffer */
+#if _FS_EXFAT
+static BYTE DirBuf[SZDIRE*19];  /* Directory entry block scratchpad buffer (19 entries in size) */
+#endif
+static WCHAR LfnBuf[_MAX_LFN+1];    /* LFN enabled with static working buffer */
+#define DEF_NAMBUF
+#define INIT_NAMBUF(fs)
+#define FREE_NAMBUF()
+
+#elif _USE_LFN == 2     /* LFN enabled with dynamic working buffer on the stack */
+#if _FS_EXFAT
+#define DEF_NAMBUF      WCHAR lbuf[_MAX_LFN+1]; BYTE dbuf[SZDIRE*19];
+#define INIT_NAMBUF(fs) { (fs)->lfnbuf = lbuf; (fs)->dirbuf = dbuf; }
+#define FREE_NAMBUF()
+#else
+#define DEF_NAMBUF      WCHAR lbuf[_MAX_LFN+1];
+#define INIT_NAMBUF(fs) { (fs)->lfnbuf = lbuf; }
+#define FREE_NAMBUF()
+#endif
+
+#elif _USE_LFN == 3     /* LFN enabled with dynamic working buffer on the heap */
+#if _FS_EXFAT
+#define DEF_NAMBUF      WCHAR *lfn;
+#define INIT_NAMBUF(fs) { lfn = ff_memalloc((_MAX_LFN+1)*2 + SZDIRE*19); if (!lfn) LEAVE_FF(fs, FR_NOT_ENOUGH_CORE); (fs)->lfnbuf = lfn; (fs)->dirbuf = (BYTE*)(lfn+_MAX_LFN+1); }
+#define FREE_NAMBUF()   ff_memfree(lfn)
+#else
+#define DEF_NAMBUF      WCHAR *lfn;
+#define INIT_NAMBUF(fs) { lfn = ff_memalloc((_MAX_LFN+1)*2); if (!lfn) LEAVE_FF(fs, FR_NOT_ENOUGH_CORE); (fs)->lfnbuf = lfn; }
+#define FREE_NAMBUF()   ff_memfree(lfn)
+#endif
+
+#else
+#error Wrong _USE_LFN setting
+#endif
+#endif
+
+#ifdef _EXCVT
+static const BYTE ExCvt[] = _EXCVT; /* Upper conversion table for SBCS extended characters */
+#endif
+
+
+
+
+
+
+/*--------------------------------------------------------------------------
+
+   Module Private Functions
+
+---------------------------------------------------------------------------*/
+
+
+/*-----------------------------------------------------------------------*/
+/* Load/Store multi-byte word in the FAT structure                       */
+/*-----------------------------------------------------------------------*/
+
+static
+WORD ld_word (const BYTE* ptr)  /*   Load a 2-byte little-endian word */
+{
+    WORD rv;
+
+    rv = ptr[1];
+    rv = rv << 8 | ptr[0];
+    return rv;
+}
+
+static
+DWORD ld_dword (const BYTE* ptr)    /* Load a 4-byte little-endian word */
+{
+    DWORD rv;
+
+    rv = ptr[3];
+    rv = rv << 8 | ptr[2];
+    rv = rv << 8 | ptr[1];
+    rv = rv << 8 | ptr[0];
+    return rv;
+}
+
+#if _FS_EXFAT
+static
+QWORD ld_qword (const BYTE* ptr)    /* Load an 8-byte little-endian word */
+{
+    QWORD rv;
+
+    rv = ptr[7];
+    rv = rv << 8 | ptr[6];
+    rv = rv << 8 | ptr[5];
+    rv = rv << 8 | ptr[4];
+    rv = rv << 8 | ptr[3];
+    rv = rv << 8 | ptr[2];
+    rv = rv << 8 | ptr[1];
+    rv = rv << 8 | ptr[0];
+    return rv;
+}
+#endif
+
+#if !_FS_READONLY
+static
+void st_word (BYTE* ptr, WORD val)  /* Store a 2-byte word in little-endian */
+{
+    *ptr++ = (BYTE)val; val >>= 8;
+    *ptr++ = (BYTE)val;
+}
+
+static
+void st_dword (BYTE* ptr, DWORD val)    /* Store a 4-byte word in little-endian */
+{
+    *ptr++ = (BYTE)val; val >>= 8;
+    *ptr++ = (BYTE)val; val >>= 8;
+    *ptr++ = (BYTE)val; val >>= 8;
+    *ptr++ = (BYTE)val;
+}
+
+#if _FS_EXFAT
+static
+void st_qword (BYTE* ptr, QWORD val)    /* Store an 8-byte word in little-endian */
+{
+    *ptr++ = (BYTE)val; val >>= 8;
+    *ptr++ = (BYTE)val; val >>= 8;
+    *ptr++ = (BYTE)val; val >>= 8;
+    *ptr++ = (BYTE)val; val >>= 8;
+    *ptr++ = (BYTE)val; val >>= 8;
+    *ptr++ = (BYTE)val; val >>= 8;
+    *ptr++ = (BYTE)val; val >>= 8;
+    *ptr++ = (BYTE)val;
+}
+#endif
+#endif  /* !_FS_READONLY */
+
+
+
+/*-----------------------------------------------------------------------*/
+/* String functions                                                      */
+/*-----------------------------------------------------------------------*/
+
+// These were originally provided by the FatFs library but we use externally
+// provided versions from C stdlib to (hopefully) reduce code size and use
+// more efficient versions.
+#define mem_cpy memcpy
+#define mem_set memset
+#define mem_cmp memcmp
+
+/* Check if chr is contained in the string */
+static
+int chk_chr (const char* str, int chr) {    /* NZ:contained, ZR:not contained */
+    while (*str && *str != chr) str++;
+    return *str;
+}
+
+
+
+
+#if _FS_REENTRANT
+/*-----------------------------------------------------------------------*/
+/* Request/Release grant to access the volume                            */
+/*-----------------------------------------------------------------------*/
+static
+int lock_fs (
+    FATFS* fs       /* File system object */
+)
+{
+    return ff_req_grant(fs->sobj);
+}
+
+
+static
+void unlock_fs (
+    FATFS* fs,      /* File system object */
+    FRESULT res     /* Result code to be returned */
+)
+{
+    if (fs && res != FR_NOT_ENABLED && res != FR_INVALID_DRIVE && res != FR_TIMEOUT) {
+        ff_rel_grant(fs->sobj);
+    }
+}
+
+#endif
+
+
+
+#if _FS_LOCK != 0
+/*-----------------------------------------------------------------------*/
+/* File lock control functions                                           */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT chk_lock (  /* Check if the file can be accessed */
+    DIR* dp,        /* Directory object pointing the file to be checked */
+    int acc         /* Desired access type (0:Read, 1:Write, 2:Delete/Rename) */
+)
+{
+    UINT i, be;
+
+    /* Search file semaphore table */
+    for (i = be = 0; i < _FS_LOCK; i++) {
+        if (Files[i].fs) {  /* Existing entry */
+            if (Files[i].fs == dp->obj.fs &&        /* Check if the object matched with an open object */
+                Files[i].clu == dp->obj.sclust &&
+                Files[i].ofs == dp->dptr) break;
+        } else {            /* Blank entry */
+            be = 1;
+        }
+    }
+    if (i == _FS_LOCK) {    /* The object is not opened */
+        return (be || acc == 2) ? FR_OK : FR_TOO_MANY_OPEN_FILES;   /* Is there a blank entry for new object? */
+    }
+
+    /* The object has been opened. Reject any open against writing file and all write mode open */
+    return (acc || Files[i].ctr == 0x100) ? FR_LOCKED : FR_OK;
+}
+
+
+static
+int enq_lock (void) /* Check if an entry is available for a new object */
+{
+    UINT i;
+
+    for (i = 0; i < _FS_LOCK && Files[i].fs; i++) ;
+    return (i == _FS_LOCK) ? 0 : 1;
+}
+
+
+static
+UINT inc_lock ( /* Increment object open counter and returns its index (0:Internal error) */
+    DIR* dp,    /* Directory object pointing the file to register or increment */
+    int acc     /* Desired access (0:Read, 1:Write, 2:Delete/Rename) */
+)
+{
+    UINT i;
+
+
+    for (i = 0; i < _FS_LOCK; i++) {    /* Find the object */
+        if (Files[i].fs == dp->obj.fs &&
+            Files[i].clu == dp->obj.sclust &&
+            Files[i].ofs == dp->dptr) break;
+    }
+
+    if (i == _FS_LOCK) {                /* Not opened. Register it as new. */
+        for (i = 0; i < _FS_LOCK && Files[i].fs; i++) ;
+        if (i == _FS_LOCK) return 0;    /* No free entry to register (int err) */
+        Files[i].fs = dp->obj.fs;
+        Files[i].clu = dp->obj.sclust;
+        Files[i].ofs = dp->dptr;
+        Files[i].ctr = 0;
+    }
+
+    if (acc && Files[i].ctr) return 0;  /* Access violation (int err) */
+
+    Files[i].ctr = acc ? 0x100 : Files[i].ctr + 1;  /* Set semaphore value */
+
+    return i + 1;
+}
+
+
+static
+FRESULT dec_lock (  /* Decrement object open counter */
+    UINT i          /* Semaphore index (1..) */
+)
+{
+    WORD n;
+    FRESULT res;
+
+
+    if (--i < _FS_LOCK) {   /* Shift index number origin from 0 */
+        n = Files[i].ctr;
+        if (n == 0x100) n = 0;      /* If write mode open, delete the entry */
+        if (n > 0) n--;             /* Decrement read mode open count */
+        Files[i].ctr = n;
+        if (n == 0) Files[i].fs = 0;    /* Delete the entry if open count gets zero */
+        res = FR_OK;
+    } else {
+        res = FR_INT_ERR;           /* Invalid index nunber */
+    }
+    return res;
+}
+
+
+static
+void clear_lock (   /* Clear lock entries of the volume */
+    FATFS *fs
+)
+{
+    UINT i;
+
+    for (i = 0; i < _FS_LOCK; i++) {
+        if (Files[i].fs == fs) Files[i].fs = 0;
+    }
+}
+
+#endif  /* _FS_LOCK != 0 */
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Move/Flush disk access window in the file system object               */
+/*-----------------------------------------------------------------------*/
+#if !_FS_READONLY
+static
+FRESULT sync_window (   /* Returns FR_OK or FR_DISK_ERROR */
+    FATFS* fs           /* File system object */
+)
+{
+    DWORD wsect;
+    UINT nf;
+    FRESULT res = FR_OK;
+
+
+    if (fs->wflag) {    /* Write back the sector if it is dirty */
+        wsect = fs->winsect;    /* Current sector number */
+        if (disk_write(fs->drv, fs->win, wsect, 1) != RES_OK) {
+            res = FR_DISK_ERR;
+        } else {
+            fs->wflag = 0;
+            if (wsect - fs->fatbase < fs->fsize) {      /* Is it in the FAT area? */
+                for (nf = fs->n_fats; nf >= 2; nf--) {  /* Reflect the change to all FAT copies */
+                    wsect += fs->fsize;
+                    disk_write(fs->drv, fs->win, wsect, 1);
+                }
+            }
+        }
+    }
+    return res;
+}
+#endif
+
+
+static
+FRESULT move_window (   /* Returns FR_OK or FR_DISK_ERROR */
+    FATFS* fs,          /* File system object */
+    DWORD sector        /* Sector number to make appearance in the fs->win[] */
+)
+{
+    FRESULT res = FR_OK;
+
+
+    if (sector != fs->winsect) {    /* Window offset changed? */
+#if !_FS_READONLY
+        res = sync_window(fs);      /* Write-back changes */
+#endif
+        if (res == FR_OK) {         /* Fill sector window with new data */
+            if (disk_read(fs->drv, fs->win, sector, 1) != RES_OK) {
+                sector = 0xFFFFFFFF;    /* Invalidate window if data is not reliable */
+                res = FR_DISK_ERR;
+            }
+            fs->winsect = sector;
+        }
+    }
+    return res;
+}
+
+
+
+
+#if !_FS_READONLY
+/*-----------------------------------------------------------------------*/
+/* Synchronize file system and strage device                             */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT sync_fs (   /* FR_OK:succeeded, !=0:error */
+    FATFS* fs       /* File system object */
+)
+{
+    FRESULT res;
+
+
+    res = sync_window(fs);
+    if (res == FR_OK) {
+        /* Update FSInfo sector if needed */
+        if (fs->fs_type == FS_FAT32 && fs->fsi_flag == 1) {
+            /* Create FSInfo structure */
+            mem_set(fs->win, 0, SS(fs));
+            st_word(fs->win + BS_55AA, 0xAA55);
+            st_dword(fs->win + FSI_LeadSig, 0x41615252);
+            st_dword(fs->win + FSI_StrucSig, 0x61417272);
+            st_dword(fs->win + FSI_Free_Count, fs->free_clst);
+            st_dword(fs->win + FSI_Nxt_Free, fs->last_clst);
+            /* Write it into the FSInfo sector */
+            fs->winsect = fs->volbase + 1;
+            disk_write(fs->drv, fs->win, fs->winsect, 1);
+            fs->fsi_flag = 0;
+        }
+        /* Make sure that no pending write process in the physical drive */
+        if (disk_ioctl(fs->drv, CTRL_SYNC, 0) != RES_OK) res = FR_DISK_ERR;
+    }
+
+    return res;
+}
+
+#endif
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Get sector# from cluster#                                             */
+/*-----------------------------------------------------------------------*/
+
+static
+DWORD clust2sect (  /* !=0:Sector number, 0:Failed (invalid cluster#) */
+    FATFS* fs,      /* File system object */
+    DWORD clst      /* Cluster# to be converted */
+)
+{
+    clst -= 2;
+    if (clst >= fs->n_fatent - 2) return 0;     /* Invalid cluster# */
+    return clst * fs->csize + fs->database;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* FAT access - Read value of a FAT entry                                */
+/*-----------------------------------------------------------------------*/
+
+static
+DWORD get_fat ( /* 0xFFFFFFFF:Disk error, 1:Internal error, 2..0x7FFFFFFF:Cluster status */
+    _FDID* obj, /* Corresponding object */
+    DWORD clst  /* Cluster number to get the value */
+)
+{
+    UINT wc, bc;
+    DWORD val;
+    FATFS *fs = obj->fs;
+
+
+    if (clst < 2 || clst >= fs->n_fatent) { /* Check if in valid range */
+        val = 1;    /* Internal error */
+
+    } else {
+        val = 0xFFFFFFFF;   /* Default value falls on disk error */
+
+        switch (fs->fs_type) {
+        case FS_FAT12 :
+            bc = (UINT)clst; bc += bc / 2;
+            if (move_window(fs, fs->fatbase + (bc / SS(fs))) != FR_OK) break;
+            wc = fs->win[bc++ % SS(fs)];
+            if (move_window(fs, fs->fatbase + (bc / SS(fs))) != FR_OK) break;
+            wc |= fs->win[bc % SS(fs)] << 8;
+            val = (clst & 1) ? (wc >> 4) : (wc & 0xFFF);
+            break;
+
+        case FS_FAT16 :
+            if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 2))) != FR_OK) break;
+            val = ld_word(fs->win + clst * 2 % SS(fs));
+            break;
+
+        case FS_FAT32 :
+            if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4))) != FR_OK) break;
+            val = ld_dword(fs->win + clst * 4 % SS(fs)) & 0x0FFFFFFF;
+            break;
+#if _FS_EXFAT
+        case FS_EXFAT :
+            if (obj->objsize) {
+                DWORD cofs = clst - obj->sclust;    /* Offset from start cluster */
+                DWORD clen = (DWORD)((obj->objsize - 1) / SS(fs)) / fs->csize;  /* Number of clusters - 1 */
+
+                if (obj->stat == 2) {   /* Is there no valid chain on the FAT? */
+                    if (cofs <= clen) {
+                        val = (cofs == clen) ? 0x7FFFFFFF : clst + 1;   /* Generate the value */
+                        break;
+                    }
+                }
+                if (obj->stat == 3 && cofs < obj->n_cont) { /* Is it in the contiguous part? */
+                    val = clst + 1;     /* Generate the value */
+                    break;
+                }
+                if (obj->stat != 2) {   /* Get value from FAT if FAT chain is valid */
+                    if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4))) != FR_OK) break;
+                    val = ld_dword(fs->win + clst * 4 % SS(fs)) & 0x7FFFFFFF;
+                    break;
+                }
+            }
+            /* go next */
+#endif
+        default:
+            val = 1;    /* Internal error */
+        }
+    }
+
+    return val;
+}
+
+
+
+
+#if !_FS_READONLY
+/*-----------------------------------------------------------------------*/
+/* FAT access - Change value of a FAT entry                              */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT put_fat (   /* FR_OK(0):succeeded, !=0:error */
+    FATFS* fs,      /* Corresponding file system object */
+    DWORD clst,     /* FAT index number (cluster number) to be changed */
+    DWORD val       /* New value to be set to the entry */
+)
+{
+    UINT bc;
+    BYTE *p;
+    FRESULT res = FR_INT_ERR;
+
+
+    if (clst >= 2 && clst < fs->n_fatent) { /* Check if in valid range */
+        switch (fs->fs_type) {
+        case FS_FAT12 : /* Bitfield items */
+            bc = (UINT)clst; bc += bc / 2;
+            res = move_window(fs, fs->fatbase + (bc / SS(fs)));
+            if (res != FR_OK) break;
+            p = fs->win + bc++ % SS(fs);
+            *p = (clst & 1) ? ((*p & 0x0F) | ((BYTE)val << 4)) : (BYTE)val;
+            fs->wflag = 1;
+            res = move_window(fs, fs->fatbase + (bc / SS(fs)));
+            if (res != FR_OK) break;
+            p = fs->win + bc % SS(fs);
+            *p = (clst & 1) ? (BYTE)(val >> 4) : ((*p & 0xF0) | ((BYTE)(val >> 8) & 0x0F));
+            fs->wflag = 1;
+            break;
+
+        case FS_FAT16 : /* WORD aligned items */
+            res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)));
+            if (res != FR_OK) break;
+            st_word(fs->win + clst * 2 % SS(fs), (WORD)val);
+            fs->wflag = 1;
+            break;
+
+        case FS_FAT32 : /* DWORD aligned items */
+#if _FS_EXFAT
+        case FS_EXFAT :
+#endif
+            res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)));
+            if (res != FR_OK) break;
+            if (!_FS_EXFAT || fs->fs_type != FS_EXFAT) {
+                val = (val & 0x0FFFFFFF) | (ld_dword(fs->win + clst * 4 % SS(fs)) & 0xF0000000);
+            }
+            st_dword(fs->win + clst * 4 % SS(fs), val);
+            fs->wflag = 1;
+            break;
+        }
+    }
+    return res;
+}
+
+#endif /* !_FS_READONLY */
+
+
+
+
+#if _FS_EXFAT && !_FS_READONLY
+/*-----------------------------------------------------------------------*/
+/* exFAT: Accessing FAT and Allocation Bitmap                            */
+/*-----------------------------------------------------------------------*/
+
+/*---------------------------------------------*/
+/* exFAT: Find a contiguous free cluster block */
+/*---------------------------------------------*/
+
+static
+DWORD find_bitmap ( /* 0:No free cluster, 2..:Free cluster found, 0xFFFFFFFF:Disk error */
+    FATFS* fs,  /* File system object */
+    DWORD clst, /* Cluster number to scan from */
+    DWORD ncl   /* Number of contiguous clusters to find (1..) */
+)
+{
+    BYTE bm, bv;
+    UINT i;
+    DWORD val, scl, ctr;
+
+
+    clst -= 2;  /* The first bit in the bitmap corresponds to cluster #2 */
+    if (clst >= fs->n_fatent - 2) clst = 0;
+    scl = val = clst; ctr = 0;
+    for (;;) {
+        if (move_window(fs, fs->database + val / 8 / SS(fs)) != FR_OK) return 0xFFFFFFFF;   /* (assuming bitmap is located top of the cluster heap) */
+        i = val / 8 % SS(fs); bm = 1 << (val % 8);
+        do {
+            do {
+                bv = fs->win[i] & bm; bm <<= 1;     /* Get bit value */
+                if (++val >= fs->n_fatent - 2) {    /* Next cluster (with wrap-around) */
+                    val = 0; bm = 0; i = 4096;
+                }
+                if (!bv) {  /* Is it a free cluster? */
+                    if (++ctr == ncl) return scl + 2;   /* Check run length */
+                } else {
+                    scl = val; ctr = 0;     /* Encountered a live cluster, restart to scan */
+                }
+                if (val == clst) return 0;  /* All cluster scanned? */
+            } while (bm);
+            bm = 1;
+        } while (++i < SS(fs));
+    }
+}
+
+
+/*------------------------------------*/
+/* exFAT: Set/Clear a block of bitmap */
+/*------------------------------------*/
+
+static
+FRESULT change_bitmap (
+    FATFS* fs,  /* File system object */
+    DWORD clst, /* Cluster number to change from */
+    DWORD ncl,  /* Number of clusters to be changed */
+    int bv      /* bit value to be set (0 or 1) */
+)
+{
+    BYTE bm;
+    UINT i;
+    DWORD sect;
+
+
+    clst -= 2;  /* The first bit corresponds to cluster #2 */
+    sect = fs->database + clst / 8 / SS(fs);    /* Sector address (assuming bitmap is located top of the cluster heap) */
+    i = clst / 8 % SS(fs);                      /* Byte offset in the sector */
+    bm = 1 << (clst % 8);                       /* Bit mask in the byte */
+    for (;;) {
+        if (move_window(fs, sect++) != FR_OK) return FR_DISK_ERR;
+        do {
+            do {
+                if (bv == (int)((fs->win[i] & bm) != 0)) return FR_INT_ERR; /* Is the bit expected value? */
+                fs->win[i] ^= bm;   /* Flip the bit */
+                fs->wflag = 1;
+                if (--ncl == 0) return FR_OK;   /* All bits processed? */
+            } while (bm <<= 1);     /* Next bit */
+            bm = 1;
+        } while (++i < SS(fs));     /* Next byte */
+        i = 0;
+    }
+}
+
+
+/*---------------------------------------------*/
+/* Complement contiguous part of the FAT chain */
+/*---------------------------------------------*/
+
+static
+FRESULT fill_fat_chain (
+    _FDID* obj  /* Pointer to the corresponding object */
+)
+{
+    FRESULT res;
+    DWORD cl, n;
+
+    if (obj->stat == 3) {   /* Has the object been changed 'fragmented'? */
+        for (cl = obj->sclust, n = obj->n_cont; n; cl++, n--) { /* Create cluster chain on the FAT */
+            res = put_fat(obj->fs, cl, cl + 1);
+            if (res != FR_OK) return res;
+        }
+        obj->stat = 0;  /* Change status 'FAT chain is valid' */
+    }
+    return FR_OK;
+}
+
+#endif  /* _FS_EXFAT && !_FS_READONLY */
+
+
+
+#if !_FS_READONLY
+/*-----------------------------------------------------------------------*/
+/* FAT handling - Remove a cluster chain                                 */
+/*-----------------------------------------------------------------------*/
+static
+FRESULT remove_chain (  /* FR_OK(0):succeeded, !=0:error */
+    _FDID* obj,         /* Corresponding object */
+    DWORD clst,         /* Cluster to remove a chain from */
+    DWORD pclst         /* Previous cluster of clst (0:an entire chain) */
+)
+{
+    FRESULT res = FR_OK;
+    DWORD nxt;
+    FATFS *fs = obj->fs;
+#if _FS_EXFAT || _USE_TRIM
+    DWORD scl = clst, ecl = clst;
+#endif
+#if _USE_TRIM
+    DWORD rt[2];
+#endif
+
+    if (clst < 2 || clst >= fs->n_fatent) return FR_INT_ERR;    /* Check if in valid range */
+
+    /* Mark the previous cluster 'EOC' on the FAT if it exists */
+    if (pclst && (!_FS_EXFAT || fs->fs_type != FS_EXFAT || obj->stat != 2)) {
+        res = put_fat(fs, pclst, 0xFFFFFFFF);
+        if (res != FR_OK) return res;
+    }
+
+    /* Remove the chain */
+    do {
+        nxt = get_fat(obj, clst);           /* Get cluster status */
+        if (nxt == 0) break;                /* Empty cluster? */
+        if (nxt == 1) return FR_INT_ERR;    /* Internal error? */
+        if (nxt == 0xFFFFFFFF) return FR_DISK_ERR;  /* Disk error? */
+        if (!_FS_EXFAT || fs->fs_type != FS_EXFAT) {
+            res = put_fat(fs, clst, 0);     /* Mark the cluster 'free' on the FAT */
+            if (res != FR_OK) return res;
+        }
+        if (fs->free_clst < fs->n_fatent - 2) { /* Update FSINFO */
+            fs->free_clst++;
+            fs->fsi_flag |= 1;
+        }
+#if _FS_EXFAT || _USE_TRIM
+        if (ecl + 1 == nxt) {   /* Is next cluster contiguous? */
+            ecl = nxt;
+        } else {                /* End of contiguous cluster block */
+#if _FS_EXFAT
+            if (fs->fs_type == FS_EXFAT) {
+                res = change_bitmap(fs, scl, ecl - scl + 1, 0); /* Mark the cluster block 'free' on the bitmap */
+                if (res != FR_OK) return res;
+            }
+#endif
+#if _USE_TRIM
+            rt[0] = clust2sect(fs, scl);                    /* Start sector */
+            rt[1] = clust2sect(fs, ecl) + fs->csize - 1;    /* End sector */
+            disk_ioctl(fs->drv, CTRL_TRIM, rt);             /* Inform device the block can be erased */
+#endif
+            scl = ecl = nxt;
+        }
+#endif
+        clst = nxt;                 /* Next cluster */
+    } while (clst < fs->n_fatent);  /* Repeat while not the last link */
+
+#if _FS_EXFAT
+    if (fs->fs_type == FS_EXFAT) {
+        if (pclst == 0) {   /* Does object have no chain? */
+            obj->stat = 0;      /* Change the object status 'initial' */
+        } else {
+            if (obj->stat == 3 && pclst >= obj->sclust && pclst <= obj->sclust + obj->n_cont) { /* Did the chain got contiguous? */
+                obj->stat = 2;  /* Change the object status 'contiguous' */
+            }
+        }
+    }
+#endif
+    return FR_OK;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* FAT handling - Stretch a chain or Create a new chain                  */
+/*-----------------------------------------------------------------------*/
+static
+DWORD create_chain (    /* 0:No free cluster, 1:Internal error, 0xFFFFFFFF:Disk error, >=2:New cluster# */
+    _FDID* obj,         /* Corresponding object */
+    DWORD clst          /* Cluster# to stretch, 0:Create a new chain */
+)
+{
+    DWORD cs, ncl, scl;
+    FRESULT res;
+    FATFS *fs = obj->fs;
+
+
+    if (clst == 0) {    /* Create a new chain */
+        scl = fs->last_clst;                /* Get suggested cluster to start from */
+        if (scl == 0 || scl >= fs->n_fatent) scl = 1;
+    }
+    else {              /* Stretch current chain */
+        cs = get_fat(obj, clst);            /* Check the cluster status */
+        if (cs < 2) return 1;               /* Invalid value */
+        if (cs == 0xFFFFFFFF) return cs;    /* A disk error occurred */
+        if (cs < fs->n_fatent) return cs;   /* It is already followed by next cluster */
+        scl = clst;
+    }
+
+#if _FS_EXFAT
+    if (fs->fs_type == FS_EXFAT) {  /* On the exFAT volume */
+        ncl = find_bitmap(fs, scl, 1);              /* Find a free cluster */
+        if (ncl == 0 || ncl == 0xFFFFFFFF) return ncl;  /* No free cluster or hard error? */
+        res = change_bitmap(fs, ncl, 1, 1);         /* Mark the cluster 'in use' */
+        if (res == FR_INT_ERR) return 1;
+        if (res == FR_DISK_ERR) return 0xFFFFFFFF;
+        if (clst == 0) {                            /* Is it a new chain? */
+            obj->stat = 2;                          /* Set status 'contiguous chain' */
+        } else {                                    /* This is a stretched chain */
+            if (obj->stat == 2 && ncl != scl + 1) { /* Is the chain got fragmented? */
+                obj->n_cont = scl - obj->sclust;    /* Set size of the contiguous part */
+                obj->stat = 3;                      /* Change status 'just fragmented' */
+            }
+        }
+    } else
+#endif
+    {   /* On the FAT12/16/32 volume */
+        ncl = scl;  /* Start cluster */
+        for (;;) {
+            ncl++;                          /* Next cluster */
+            if (ncl >= fs->n_fatent) {      /* Check wrap-around */
+                ncl = 2;
+                if (ncl > scl) return 0;    /* No free cluster */
+            }
+            cs = get_fat(obj, ncl);         /* Get the cluster status */
+            if (cs == 0) break;             /* Found a free cluster */
+            if (cs == 1 || cs == 0xFFFFFFFF) return cs; /* An error occurred */
+            if (ncl == scl) return 0;       /* No free cluster */
+        }
+    }
+
+    if (_FS_EXFAT && fs->fs_type == FS_EXFAT && obj->stat == 2) {   /* Is it a contiguous chain? */
+        res = FR_OK;                        /* FAT does not need to be written */
+    } else {
+        res = put_fat(fs, ncl, 0xFFFFFFFF); /* Mark the new cluster 'EOC' */
+        if (res == FR_OK && clst) {
+            res = put_fat(fs, clst, ncl);   /* Link it from the previous one if needed */
+        }
+    }
+
+    if (res == FR_OK) {         /* Update FSINFO if function succeeded. */
+        fs->last_clst = ncl;
+        if (fs->free_clst < fs->n_fatent - 2) fs->free_clst--;
+        fs->fsi_flag |= 1;
+    } else {
+        ncl = (res == FR_DISK_ERR) ? 0xFFFFFFFF : 1;    /* Failed. Create error status */
+    }
+
+    return ncl;     /* Return new cluster number or error status */
+}
+
+#endif /* !_FS_READONLY */
+
+
+
+
+#if _USE_FASTSEEK
+/*-----------------------------------------------------------------------*/
+/* FAT handling - Convert offset into cluster with link map table        */
+/*-----------------------------------------------------------------------*/
+
+static
+DWORD clmt_clust (  /* <2:Error, >=2:Cluster number */
+    FIL* fp,        /* Pointer to the file object */
+    FSIZE_t ofs     /* File offset to be converted to cluster# */
+)
+{
+    DWORD cl, ncl, *tbl;
+    FATFS *fs = fp->obj.fs;
+
+
+    tbl = fp->cltbl + 1;    /* Top of CLMT */
+    cl = (DWORD)(ofs / SS(fs) / fs->csize); /* Cluster order from top of the file */
+    for (;;) {
+        ncl = *tbl++;           /* Number of cluters in the fragment */
+        if (ncl == 0) return 0; /* End of table? (error) */
+        if (cl < ncl) break;    /* In this fragment? */
+        cl -= ncl; tbl++;       /* Next fragment */
+    }
+    return cl + *tbl;   /* Return the cluster number */
+}
+
+#endif  /* _USE_FASTSEEK */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Directory handling - Set directory index                              */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT dir_sdi (   /* FR_OK(0):succeeded, !=0:error */
+    DIR* dp,        /* Pointer to directory object */
+    DWORD ofs       /* Offset of directory table */
+)
+{
+    DWORD csz, clst;
+    FATFS *fs = dp->obj.fs;
+
+
+    if (ofs >= (DWORD)((_FS_EXFAT && fs->fs_type == FS_EXFAT) ? MAX_DIR_EX : MAX_DIR) || ofs % SZDIRE) {    /* Check range of offset and alignment */
+        return FR_INT_ERR;
+    }
+    dp->dptr = ofs;             /* Set current offset */
+    clst = dp->obj.sclust;      /* Table start cluster (0:root) */
+    if (clst == 0 && fs->fs_type >= FS_FAT32) { /* Replace cluster# 0 with root cluster# */
+        clst = fs->dirbase;
+        if (_FS_EXFAT) dp->obj.stat = 0;    /* exFAT: Root dir has an FAT chain */
+    }
+
+    if (clst == 0) {    /* Static table (root-directory in FAT12/16) */
+        if (ofs / SZDIRE >= fs->n_rootdir)  return FR_INT_ERR;  /* Is index out of range? */
+        dp->sect = fs->dirbase;
+
+    } else {            /* Dynamic table (sub-directory or root-directory in FAT32+) */
+        csz = (DWORD)fs->csize * SS(fs);    /* Bytes per cluster */
+        while (ofs >= csz) {                /* Follow cluster chain */
+            clst = get_fat(&dp->obj, clst);             /* Get next cluster */
+            if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */
+            if (clst < 2 || clst >= fs->n_fatent) return FR_INT_ERR;    /* Reached to end of table or internal error */
+            ofs -= csz;
+        }
+        dp->sect = clust2sect(fs, clst);
+    }
+    dp->clust = clst;                   /* Current cluster# */
+    if (!dp->sect) return FR_INT_ERR;
+    dp->sect += ofs / SS(fs);           /* Sector# of the directory entry */
+    dp->dir = fs->win + (ofs % SS(fs)); /* Pointer to the entry in the win[] */
+
+    return FR_OK;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Directory handling - Move directory table index next                  */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT dir_next (  /* FR_OK(0):succeeded, FR_NO_FILE:End of table, FR_DENIED:Could not stretch */
+    DIR* dp,        /* Pointer to the directory object */
+    int stretch     /* 0: Do not stretch table, 1: Stretch table if needed */
+)
+{
+    DWORD ofs, clst;
+    FATFS *fs = dp->obj.fs;
+#if !_FS_READONLY
+    UINT n;
+#endif
+
+    ofs = dp->dptr + SZDIRE;    /* Next entry */
+    if (!dp->sect || ofs >= (DWORD)((_FS_EXFAT && fs->fs_type == FS_EXFAT) ? MAX_DIR_EX : MAX_DIR)) return FR_NO_FILE;  /* Report EOT when offset has reached max value */
+
+    if (ofs % SS(fs) == 0) {    /* Sector changed? */
+        dp->sect++;             /* Next sector */
+
+        if (!dp->clust) {       /* Static table */
+            if (ofs / SZDIRE >= fs->n_rootdir) {    /* Report EOT if it reached end of static table */
+                dp->sect = 0; return FR_NO_FILE;
+            }
+        }
+        else {                  /* Dynamic table */
+            if ((ofs / SS(fs) & (fs->csize - 1)) == 0) {        /* Cluster changed? */
+                clst = get_fat(&dp->obj, dp->clust);            /* Get next cluster */
+                if (clst <= 1) return FR_INT_ERR;               /* Internal error */
+                if (clst == 0xFFFFFFFF) return FR_DISK_ERR;     /* Disk error */
+                if (clst >= fs->n_fatent) {                     /* Reached end of dynamic table */
+#if !_FS_READONLY
+                    if (!stretch) {                             /* If no stretch, report EOT */
+                        dp->sect = 0; return FR_NO_FILE;
+                    }
+                    clst = create_chain(&dp->obj, dp->clust);   /* Allocate a cluster */
+                    if (clst == 0) return FR_DENIED;            /* No free cluster */
+                    if (clst == 1) return FR_INT_ERR;           /* Internal error */
+                    if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */
+                    /* Clean-up the stretched table */
+                    if (_FS_EXFAT) dp->obj.stat |= 4;           /* The directory needs to be updated */
+                    if (sync_window(fs) != FR_OK) return FR_DISK_ERR;   /* Flush disk access window */
+                    mem_set(fs->win, 0, SS(fs));                /* Clear window buffer */
+                    for (n = 0, fs->winsect = clust2sect(fs, clst); n < fs->csize; n++, fs->winsect++) {    /* Fill the new cluster with 0 */
+                        fs->wflag = 1;
+                        if (sync_window(fs) != FR_OK) return FR_DISK_ERR;
+                    }
+                    fs->winsect -= n;                           /* Restore window offset */
+#else
+                    if (!stretch) dp->sect = 0;                 /* If no stretch, report EOT (this is to suppress warning) */
+                    dp->sect = 0; return FR_NO_FILE;            /* Report EOT */
+#endif
+                }
+                dp->clust = clst;       /* Initialize data for new cluster */
+                dp->sect = clust2sect(fs, clst);
+            }
+        }
+    }
+    dp->dptr = ofs;                     /* Current entry */
+    dp->dir = fs->win + ofs % SS(fs);   /* Pointer to the entry in the win[] */
+
+    return FR_OK;
+}
+
+
+
+
+#if !_FS_READONLY
+/*-----------------------------------------------------------------------*/
+/* Directory handling - Reserve a block of directory entries             */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT dir_alloc ( /* FR_OK(0):succeeded, !=0:error */
+    DIR* dp,        /* Pointer to the directory object */
+    UINT nent       /* Number of contiguous entries to allocate */
+)
+{
+    FRESULT res;
+    UINT n;
+    FATFS *fs = dp->obj.fs;
+
+
+    res = dir_sdi(dp, 0);
+    if (res == FR_OK) {
+        n = 0;
+        do {
+            res = move_window(fs, dp->sect);
+            if (res != FR_OK) break;
+#if _FS_EXFAT
+            if ((fs->fs_type == FS_EXFAT) ? (int)((dp->dir[XDIR_Type] & 0x80) == 0) : (int)(dp->dir[DIR_Name] == DDEM || dp->dir[DIR_Name] == 0)) {
+#else
+            if (dp->dir[DIR_Name] == DDEM || dp->dir[DIR_Name] == 0) {
+#endif
+                if (++n == nent) break; /* A block of contiguous free entries is found */
+            } else {
+                n = 0;                  /* Not a blank entry. Restart to search */
+            }
+            res = dir_next(dp, 1);
+        } while (res == FR_OK); /* Next entry with table stretch enabled */
+    }
+
+    if (res == FR_NO_FILE) res = FR_DENIED; /* No directory entry to allocate */
+    return res;
+}
+
+#endif  /* !_FS_READONLY */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* FAT: Directory handling - Load/Store start cluster number             */
+/*-----------------------------------------------------------------------*/
+
+static
+DWORD ld_clust (    /* Returns the top cluster value of the SFN entry */
+    FATFS* fs,      /* Pointer to the fs object */
+    const BYTE* dir /* Pointer to the key entry */
+)
+{
+    DWORD cl;
+
+    cl = ld_word(dir + DIR_FstClusLO);
+    if (fs->fs_type == FS_FAT32) {
+        cl |= (DWORD)ld_word(dir + DIR_FstClusHI) << 16;
+    }
+
+    return cl;
+}
+
+
+#if !_FS_READONLY
+static
+void st_clust (
+    FATFS* fs,  /* Pointer to the fs object */
+    BYTE* dir,  /* Pointer to the key entry */
+    DWORD cl    /* Value to be set */
+)
+{
+    st_word(dir + DIR_FstClusLO, (WORD)cl);
+    if (fs->fs_type == FS_FAT32) {
+        st_word(dir + DIR_FstClusHI, (WORD)(cl >> 16));
+    }
+}
+#endif
+
+
+
+#if _USE_LFN != 0
+/*------------------------------------------------------------------------*/
+/* FAT-LFN: LFN handling                                                  */
+/*------------------------------------------------------------------------*/
+static
+const BYTE LfnOfs[] = {1,3,5,7,9,14,16,18,20,22,24,28,30};  /* Offset of LFN characters in the directory entry */
+
+
+/*--------------------------------------------------------*/
+/* FAT-LFN: Compare a part of file name with an LFN entry */
+/*--------------------------------------------------------*/
+static
+int cmp_lfn (               /* 1:matched, 0:not matched */
+    const WCHAR* lfnbuf,    /* Pointer to the LFN working buffer to be compared */
+    BYTE* dir               /* Pointer to the directory entry containing the part of LFN */
+)
+{
+    UINT i, s;
+    WCHAR wc, uc;
+
+
+    if (ld_word(dir + LDIR_FstClusLO) != 0) return 0;   /* Check LDIR_FstClusLO */
+
+    i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13;  /* Offset in the LFN buffer */
+
+    for (wc = 1, s = 0; s < 13; s++) {      /* Process all characters in the entry */
+        uc = ld_word(dir + LfnOfs[s]);      /* Pick an LFN character */
+        if (wc) {
+            if (i >= _MAX_LFN || ff_wtoupper(uc) != ff_wtoupper(lfnbuf[i++])) { /* Compare it */
+                return 0;                   /* Not matched */
+            }
+            wc = uc;
+        } else {
+            if (uc != 0xFFFF) return 0;     /* Check filler */
+        }
+    }
+
+    if ((dir[LDIR_Ord] & LLEF) && wc && lfnbuf[i]) return 0;    /* Last segment matched but different length */
+
+    return 1;       /* The part of LFN matched */
+}
+
+
+#if _FS_MINIMIZE <= 1 || _FS_RPATH >= 2 || _USE_LABEL || _FS_EXFAT
+/*-----------------------------------------------------*/
+/* FAT-LFN: Pick a part of file name from an LFN entry */
+/*-----------------------------------------------------*/
+static
+int pick_lfn (          /* 1:succeeded, 0:buffer overflow or invalid LFN entry */
+    WCHAR* lfnbuf,      /* Pointer to the LFN working buffer */
+    BYTE* dir           /* Pointer to the LFN entry */
+)
+{
+    UINT i, s;
+    WCHAR wc, uc;
+
+
+    if (ld_word(dir + LDIR_FstClusLO) != 0) return 0;   /* Check LDIR_FstClusLO */
+
+    i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13;  /* Offset in the LFN buffer */
+
+    for (wc = 1, s = 0; s < 13; s++) {      /* Process all characters in the entry */
+        uc = ld_word(dir + LfnOfs[s]);      /* Pick an LFN character */
+        if (wc) {
+            if (i >= _MAX_LFN) return 0;    /* Buffer overflow? */
+            lfnbuf[i++] = wc = uc;          /* Store it */
+        } else {
+            if (uc != 0xFFFF) return 0;     /* Check filler */
+        }
+    }
+
+    if (dir[LDIR_Ord] & LLEF) {             /* Put terminator if it is the last LFN part */
+        if (i >= _MAX_LFN) return 0;        /* Buffer overflow? */
+        lfnbuf[i] = 0;
+    }
+
+    return 1;       /* The part of LFN is valid */
+}
+#endif
+
+
+#if !_FS_READONLY
+/*-----------------------------------------*/
+/* FAT-LFN: Create an entry of LFN entries */
+/*-----------------------------------------*/
+static
+void put_lfn (
+    const WCHAR* lfn,   /* Pointer to the LFN */
+    BYTE* dir,          /* Pointer to the LFN entry to be created */
+    BYTE ord,           /* LFN order (1-20) */
+    BYTE sum            /* Checksum of the corresponding SFN */
+)
+{
+    UINT i, s;
+    WCHAR wc;
+
+
+    dir[LDIR_Chksum] = sum;         /* Set checksum */
+    dir[LDIR_Attr] = AM_LFN;        /* Set attribute. LFN entry */
+    dir[LDIR_Type] = 0;
+    st_word(dir + LDIR_FstClusLO, 0);
+
+    i = (ord - 1) * 13;             /* Get offset in the LFN working buffer */
+    s = wc = 0;
+    do {
+        if (wc != 0xFFFF) wc = lfn[i++];    /* Get an effective character */
+        st_word(dir + LfnOfs[s], wc);       /* Put it */
+        if (wc == 0) wc = 0xFFFF;       /* Padding characters for left locations */
+    } while (++s < 13);
+    if (wc == 0xFFFF || !lfn[i]) ord |= LLEF;   /* Last LFN part is the start of LFN sequence */
+    dir[LDIR_Ord] = ord;            /* Set the LFN order */
+}
+
+#endif  /* !_FS_READONLY */
+#endif  /* _USE_LFN != 0 */
+
+
+
+#if _USE_LFN != 0 && !_FS_READONLY
+/*-----------------------------------------------------------------------*/
+/* FAT-LFN: Create a Numbered SFN                                        */
+/*-----------------------------------------------------------------------*/
+
+static
+void gen_numname (
+    BYTE* dst,          /* Pointer to the buffer to store numbered SFN */
+    const BYTE* src,    /* Pointer to SFN */
+    const WCHAR* lfn,   /* Pointer to LFN */
+    UINT seq            /* Sequence number */
+)
+{
+    BYTE ns[8], c;
+    UINT i, j;
+    WCHAR wc;
+    DWORD sr;
+
+
+    mem_cpy(dst, src, 11);
+
+    if (seq > 5) {  /* In case of many collisions, generate a hash number instead of sequential number */
+        sr = seq;
+        while (*lfn) {  /* Create a CRC */
+            wc = *lfn++;
+            for (i = 0; i < 16; i++) {
+                sr = (sr << 1) + (wc & 1);
+                wc >>= 1;
+                if (sr & 0x10000) sr ^= 0x11021;
+            }
+        }
+        seq = (UINT)sr;
+    }
+
+    /* itoa (hexdecimal) */
+    i = 7;
+    do {
+        c = (BYTE)((seq % 16) + '0');
+        if (c > '9') c += 7;
+        ns[i--] = c;
+        seq /= 16;
+    } while (seq);
+    ns[i] = '~';
+
+    /* Append the number */
+    for (j = 0; j < i && dst[j] != ' '; j++) {
+        if (IsDBCS1(dst[j])) {
+            if (j == i - 1) break;
+            j++;
+        }
+    }
+    do {
+        dst[j++] = (i < 8) ? ns[i++] : ' ';
+    } while (j < 8);
+}
+#endif  /* _USE_LFN != 0 && !_FS_READONLY */
+
+
+
+#if _USE_LFN != 0
+/*-----------------------------------------------------------------------*/
+/* FAT-LFN: Calculate checksum of an SFN entry                           */
+/*-----------------------------------------------------------------------*/
+
+static
+BYTE sum_sfn (
+    const BYTE* dir     /* Pointer to the SFN entry */
+)
+{
+    BYTE sum = 0;
+    UINT n = 11;
+
+    do sum = (sum >> 1) + (sum << 7) + *dir++; while (--n);
+    return sum;
+}
+
+#endif  /* _USE_LFN != 0 */
+
+
+
+#if _FS_EXFAT
+/*-----------------------------------------------------------------------*/
+/* exFAT: Checksum                                                       */
+/*-----------------------------------------------------------------------*/
+
+static
+WORD xdir_sum (         /* Get checksum of the directoly block */
+    const BYTE* dir     /* Directory entry block to be calculated */
+)
+{
+    UINT i, szblk;
+    WORD sum;
+
+
+    szblk = (dir[XDIR_NumSec] + 1) * SZDIRE;
+    for (i = sum = 0; i < szblk; i++) {
+        if (i == XDIR_SetSum) { /* Skip sum field */
+            i++;
+        } else {
+            sum = ((sum & 1) ? 0x8000 : 0) + (sum >> 1) + dir[i];
+        }
+    }
+    return sum;
+}
+
+
+
+static
+WORD xname_sum (        /* Get check sum (to be used as hash) of the name */
+    const WCHAR* name   /* File name to be calculated */
+)
+{
+    WCHAR chr;
+    WORD sum = 0;
+
+
+    while ((chr = *name++) != 0) {
+        chr = ff_wtoupper(chr);     /* File name needs to be ignored case */
+        sum = ((sum & 1) ? 0x8000 : 0) + (sum >> 1) + (chr & 0xFF);
+        sum = ((sum & 1) ? 0x8000 : 0) + (sum >> 1) + (chr >> 8);
+    }
+    return sum;
+}
+
+
+#if !_FS_READONLY && _USE_MKFS
+static
+DWORD xsum32 (
+    BYTE  dat,  /* Data to be sumed */
+    DWORD sum   /* Previous value */
+)
+{
+    sum = ((sum & 1) ? 0x80000000 : 0) + (sum >> 1) + dat;
+    return sum;
+}
+#endif
+
+
+#if _FS_MINIMIZE <= 1 || _FS_RPATH >= 2
+/*------------------------------------------------------*/
+/* exFAT: Get object information from a directory block */
+/*------------------------------------------------------*/
+
+static
+void get_xdir_info (
+    BYTE* dirb,         /* Pointer to the direcotry entry block 85+C0+C1s */
+    FILINFO* fno        /* Buffer to store the extracted file information */
+)
+{
+    UINT di, si;
+    WCHAR w;
+#if !_LFN_UNICODE
+    UINT nc;
+#endif
+
+    /* Get file name */
+#if _LFN_UNICODE
+    if (dirb[XDIR_NumName] <= _MAX_LFN) {
+        for (si = SZDIRE * 2, di = 0; di < dirb[XDIR_NumName]; si += 2, di++) {
+            if ((si % SZDIRE) == 0) si += 2;    /* Skip entry type field */
+            w = ld_word(dirb + si);             /* Get a character */
+            fno->fname[di] = w;                 /* Store it */
+        }
+    } else {
+        di = 0; /* Buffer overflow and inaccessible object */
+    }
+#else
+    for (si = SZDIRE * 2, di = nc = 0; nc < dirb[XDIR_NumName]; si += 2, nc++) {
+        if ((si % SZDIRE) == 0) si += 2;    /* Skip entry type field */
+        w = ld_word(dirb + si);             /* Get a character */
+        w = ff_convert(w, 0);               /* Unicode -> OEM */
+        if (w == 0) { di = 0; break; }      /* Could not be converted and inaccessible object */
+        if (_DF1S && w >= 0x100) {          /* Put 1st byte if it is a DBC (always false at SBCS cfg) */
+            fno->fname[di++] = (char)(w >> 8);
+        }
+        if (di >= _MAX_LFN) { di = 0; break; }  /* Buffer overflow and inaccessible object */
+        fno->fname[di++] = (char)w;
+    }
+#endif
+    if (di == 0) fno->fname[di++] = '?';    /* Inaccessible object? */
+    fno->fname[di] = 0;                     /* Terminate file name */
+
+    fno->altname[0] = 0;                            /* No SFN */
+    fno->fattrib = dirb[XDIR_Attr];                 /* Attribute */
+    fno->fsize = (fno->fattrib & AM_DIR) ? 0 : ld_qword(dirb + XDIR_FileSize);  /* Size */
+    fno->ftime = ld_word(dirb + XDIR_ModTime + 0);  /* Time */
+    fno->fdate = ld_word(dirb + XDIR_ModTime + 2);  /* Date */
+}
+
+#endif  /* _FS_MINIMIZE <= 1 || _FS_RPATH >= 2 */
+
+
+/*-----------------------------------*/
+/* exFAT: Get a directry entry block */
+/*-----------------------------------*/
+
+static
+FRESULT load_xdir ( /* FR_INT_ERR: invalid entry block */
+    DIR* dp         /* Pointer to the reading direcotry object pointing the 85 entry */
+)
+{
+    FRESULT res;
+    UINT i, nent;
+    BYTE* dirb = dp->obj.fs->dirbuf;    /* Pointer to the on-memory direcotry entry block 85+C0+C1s */
+
+
+    /* Load 85 entry */
+    res = move_window(dp->obj.fs, dp->sect);
+    if (res != FR_OK) return res;
+    if (dp->dir[XDIR_Type] != 0x85) return FR_INT_ERR;
+    mem_cpy(dirb, dp->dir, SZDIRE);
+    nent = dirb[XDIR_NumSec] + 1;
+
+    /* Load C0 entry */
+    res = dir_next(dp, 0);
+    if (res != FR_OK) return res;
+    res = move_window(dp->obj.fs, dp->sect);
+    if (res != FR_OK) return res;
+    if (dp->dir[XDIR_Type] != 0xC0) return FR_INT_ERR;
+    mem_cpy(dirb + SZDIRE, dp->dir, SZDIRE);
+
+    /* Load C1 entries */
+    if (nent < 3 || nent > 19) return FR_NO_FILE;
+    i = SZDIRE * 2; nent *= SZDIRE;
+    do {
+        res = dir_next(dp, 0);
+        if (res != FR_OK) return res;
+        res = move_window(dp->obj.fs, dp->sect);
+        if (res != FR_OK) return res;
+        if (dp->dir[XDIR_Type] != 0xC1) return FR_INT_ERR;
+        mem_cpy(dirb + i, dp->dir, SZDIRE);
+        i += SZDIRE;
+    } while (i < nent);
+
+    /* Sanity check */
+    if (xdir_sum(dirb) != ld_word(dirb + XDIR_SetSum)) return FR_INT_ERR;
+
+    return FR_OK;
+}
+
+
+#if !_FS_READONLY || _FS_RPATH != 0
+/*------------------------------------------------*/
+/* exFAT: Load the object's directory entry block */
+/*------------------------------------------------*/
+static
+FRESULT load_obj_dir (
+    DIR* dp,            /* Blank directory object to be used to access containing direcotry */
+    const _FDID* obj    /* Object with containing directory information */
+)
+{
+    FRESULT res;
+
+
+    /* Open object containing directory */
+    dp->obj.fs = obj->fs;
+    dp->obj.sclust = obj->c_scl;
+    dp->obj.stat = (BYTE)obj->c_size;
+    dp->obj.objsize = obj->c_size & 0xFFFFFF00;
+    dp->blk_ofs = obj->c_ofs;
+
+    res = dir_sdi(dp, dp->blk_ofs); /* Goto the block location */
+    if (res == FR_OK) {
+        res = load_xdir(dp);        /* Load the object's entry block */
+    }
+    return res;
+}
+#endif
+
+
+#if !_FS_READONLY
+/*-----------------------------------------------*/
+/* exFAT: Store the directory block to the media */
+/*-----------------------------------------------*/
+static
+FRESULT store_xdir (
+    DIR* dp             /* Pointer to the direcotry object */
+)
+{
+    FRESULT res;
+    UINT nent;
+    BYTE* dirb = dp->obj.fs->dirbuf;    /* Pointer to the direcotry entry block 85+C0+C1s */
+
+    /* Create set sum */
+    st_word(dirb + XDIR_SetSum, xdir_sum(dirb));
+    nent = dirb[XDIR_NumSec] + 1;
+
+    /* Store the set of directory to the volume */
+    res = dir_sdi(dp, dp->blk_ofs);
+    while (res == FR_OK) {
+        res = move_window(dp->obj.fs, dp->sect);
+        if (res != FR_OK) break;
+        mem_cpy(dp->dir, dirb, SZDIRE);
+        dp->obj.fs->wflag = 1;
+        if (--nent == 0) break;
+        dirb += SZDIRE;
+        res = dir_next(dp, 0);
+    }
+    return (res == FR_OK || res == FR_DISK_ERR) ? res : FR_INT_ERR;
+}
+
+
+
+/*-------------------------------------------*/
+/* exFAT: Create a new directory enrty block */
+/*-------------------------------------------*/
+
+static
+void create_xdir (
+    BYTE* dirb,         /* Pointer to the direcotry entry block buffer */
+    const WCHAR* lfn    /* Pointer to the nul terminated file name */
+)
+{
+    UINT i;
+    BYTE nb, nc;
+    WCHAR chr;
+
+
+    mem_set(dirb, 0, 2 * SZDIRE);           /* Initialize 85+C0 entry */
+    dirb[XDIR_Type] = 0x85;
+    dirb[XDIR_Type + SZDIRE] = 0xC0;
+    st_word(dirb + XDIR_NameHash, xname_sum(lfn));  /* Set name hash */
+
+    i = SZDIRE * 2; /* C1 offset */
+    nc = 0; nb = 1; chr = 1;
+    do {
+        dirb[i++] = 0xC1; dirb[i++] = 0;    /* Entry type C1 */
+        do {    /* Fill name field */
+            if (chr && (chr = lfn[nc]) != 0) nc++;  /* Get a character if exist */
+            st_word(dirb + i, chr); i += 2; /* Store it */
+        } while (i % SZDIRE);
+        nb++;
+    } while (lfn[nc]);  /* Fill next entry if any char follows */
+
+    dirb[XDIR_NumName] = nc;    /* Set name length */
+    dirb[XDIR_NumSec] = nb;     /* Set number of C0+C1s */
+}
+
+#endif  /* !_FS_READONLY */
+#endif  /* _FS_EXFAT */
+
+
+
+#if _FS_MINIMIZE <= 1 || _FS_RPATH >= 2 || _USE_LABEL || _FS_EXFAT
+/*-----------------------------------------------------------------------*/
+/* Read an object from the directory                                     */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT dir_read (
+    DIR* dp,        /* Pointer to the directory object */
+    int vol         /* Filtered by 0:file/directory or 1:volume label */
+)
+{
+    FRESULT res = FR_NO_FILE;
+    FATFS *fs = dp->obj.fs;
+    BYTE a, c;
+#if _USE_LFN != 0
+    BYTE ord = 0xFF, sum = 0xFF;
+#endif
+
+    while (dp->sect) {
+        res = move_window(fs, dp->sect);
+        if (res != FR_OK) break;
+        c = dp->dir[DIR_Name];  /* Test for the entry type */
+        if (c == 0) { res = FR_NO_FILE; break; }    /* Reached to end of the directory */
+#if _FS_EXFAT
+        if (fs->fs_type == FS_EXFAT) {  /* On the exFAT volume */
+            if (_USE_LABEL && vol) {
+                if (c == 0x83) break;   /* Volume label entry? */
+            } else {
+                if (c == 0x85) {        /* Start of the file entry block? */
+                    dp->blk_ofs = dp->dptr; /* Get location of the block */
+                    res = load_xdir(dp);    /* Load the entry block */
+                    if (res == FR_OK) {
+                        dp->obj.attr = fs->dirbuf[XDIR_Attr] & AM_MASK; /* Get attribute */
+                    }
+                    break;
+                }
+            }
+        } else
+#endif
+        {   /* On the FAT12/16/32 volume */
+            dp->obj.attr = a = dp->dir[DIR_Attr] & AM_MASK; /* Get attribute */
+#if _USE_LFN != 0   /* LFN configuration */
+            if (c == DDEM || c == '.' || (int)((a & ~AM_ARC) == AM_VOL) != vol) {   /* An entry without valid data */
+                ord = 0xFF;
+            } else {
+                if (a == AM_LFN) {          /* An LFN entry is found */
+                    if (c & LLEF) {         /* Is it start of an LFN sequence? */
+                        sum = dp->dir[LDIR_Chksum];
+                        c &= (BYTE)~LLEF; ord = c;
+                        dp->blk_ofs = dp->dptr;
+                    }
+                    /* Check LFN validity and capture it */
+                    ord = (c == ord && sum == dp->dir[LDIR_Chksum] && pick_lfn(fs->lfnbuf, dp->dir)) ? ord - 1 : 0xFF;
+                } else {                    /* An SFN entry is found */
+                    if (ord || sum != sum_sfn(dp->dir)) {   /* Is there a valid LFN? */
+                        dp->blk_ofs = 0xFFFFFFFF;           /* It has no LFN. */
+                    }
+                    break;
+                }
+            }
+#else       /* Non LFN configuration */
+            if (c != DDEM && c != '.' && a != AM_LFN && (int)((a & ~AM_ARC) == AM_VOL) == vol) {    /* Is it a valid entry? */
+                break;
+            }
+#endif
+        }
+        res = dir_next(dp, 0);      /* Next entry */
+        if (res != FR_OK) break;
+    }
+
+    if (res != FR_OK) dp->sect = 0;     /* Terminate the read operation on error or EOT */
+    return res;
+}
+
+#endif  /* _FS_MINIMIZE <= 1 || _USE_LABEL || _FS_RPATH >= 2 */
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Directory handling - Find an object in the directory                  */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT dir_find (  /* FR_OK(0):succeeded, !=0:error */
+    DIR* dp         /* Pointer to the directory object with the file name */
+)
+{
+    FRESULT res;
+    FATFS *fs = dp->obj.fs;
+    BYTE c;
+#if _USE_LFN != 0
+    BYTE a, ord, sum;
+#endif
+
+    res = dir_sdi(dp, 0);           /* Rewind directory object */
+    if (res != FR_OK) return res;
+#if _FS_EXFAT
+    if (fs->fs_type == FS_EXFAT) {  /* On the exFAT volume */
+        BYTE nc;
+        UINT di, ni;
+        WORD hash = xname_sum(fs->lfnbuf);      /* Hash value of the name to find */
+
+        while ((res = dir_read(dp, 0)) == FR_OK) {  /* Read an item */
+            if (ld_word(fs->dirbuf + XDIR_NameHash) != hash) continue;  /* Skip the comparison if hash value mismatched */
+            for (nc = fs->dirbuf[XDIR_NumName], di = SZDIRE * 2, ni = 0; nc; nc--, di += 2, ni++) { /* Compare the name */
+                if ((di % SZDIRE) == 0) di += 2;
+                if (ff_wtoupper(ld_word(fs->dirbuf + di)) != ff_wtoupper(fs->lfnbuf[ni])) break;
+            }
+            if (nc == 0 && !fs->lfnbuf[ni]) break;  /* Name matched? */
+        }
+        return res;
+    }
+#endif
+    /* On the FAT12/16/32 volume */
+#if _USE_LFN != 0
+    ord = sum = 0xFF; dp->blk_ofs = 0xFFFFFFFF; /* Reset LFN sequence */
+#endif
+    do {
+        res = move_window(fs, dp->sect);
+        if (res != FR_OK) break;
+        c = dp->dir[DIR_Name];
+        if (c == 0) { res = FR_NO_FILE; break; }    /* Reached to end of table */
+#if _USE_LFN != 0   /* LFN configuration */
+        dp->obj.attr = a = dp->dir[DIR_Attr] & AM_MASK;
+        if (c == DDEM || ((a & AM_VOL) && a != AM_LFN)) {   /* An entry without valid data */
+            ord = 0xFF; dp->blk_ofs = 0xFFFFFFFF;   /* Reset LFN sequence */
+        } else {
+            if (a == AM_LFN) {          /* An LFN entry is found */
+                if (!(dp->fn[NSFLAG] & NS_NOLFN)) {
+                    if (c & LLEF) {     /* Is it start of LFN sequence? */
+                        sum = dp->dir[LDIR_Chksum];
+                        c &= (BYTE)~LLEF; ord = c;  /* LFN start order */
+                        dp->blk_ofs = dp->dptr; /* Start offset of LFN */
+                    }
+                    /* Check validity of the LFN entry and compare it with given name */
+                    ord = (c == ord && sum == dp->dir[LDIR_Chksum] && cmp_lfn(fs->lfnbuf, dp->dir)) ? ord - 1 : 0xFF;
+                }
+            } else {                    /* An SFN entry is found */
+                if (!ord && sum == sum_sfn(dp->dir)) break; /* LFN matched? */
+                if (!(dp->fn[NSFLAG] & NS_LOSS) && !mem_cmp(dp->dir, dp->fn, 11)) break;    /* SFN matched? */
+                ord = 0xFF; dp->blk_ofs = 0xFFFFFFFF;   /* Reset LFN sequence */
+            }
+        }
+#else       /* Non LFN configuration */
+        dp->obj.attr = dp->dir[DIR_Attr] & AM_MASK;
+        if (!(dp->dir[DIR_Attr] & AM_VOL) && !mem_cmp(dp->dir, dp->fn, 11)) break;  /* Is it a valid entry? */
+#endif
+        res = dir_next(dp, 0);  /* Next entry */
+    } while (res == FR_OK);
+
+    return res;
+}
+
+
+
+
+#if !_FS_READONLY
+/*-----------------------------------------------------------------------*/
+/* Register an object to the directory                                   */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT dir_register (  /* FR_OK:succeeded, FR_DENIED:no free entry or too many SFN collision, FR_DISK_ERR:disk error */
+    DIR* dp             /* Target directory with object name to be created */
+)
+{
+    FRESULT res;
+    FATFS *fs = dp->obj.fs;
+#if _USE_LFN != 0   /* LFN configuration */
+    UINT n, nlen, nent;
+    BYTE sn[12], sum;
+
+
+    if (dp->fn[NSFLAG] & (NS_DOT | NS_NONAME)) return FR_INVALID_NAME;  /* Check name validity */
+    for (nlen = 0; fs->lfnbuf[nlen]; nlen++) ;  /* Get lfn length */
+
+#if _FS_EXFAT
+    if (fs->fs_type == FS_EXFAT) {  /* On the exFAT volume */
+        DIR dj;
+
+        nent = (nlen + 14) / 15 + 2;    /* Number of entries to allocate (85+C0+C1s) */
+        res = dir_alloc(dp, nent);      /* Allocate entries */
+        if (res != FR_OK) return res;
+        dp->blk_ofs = dp->dptr - SZDIRE * (nent - 1);           /* Set block position */
+
+        if (dp->obj.sclust != 0 && (dp->obj.stat & 4)) {    /* Has the sub-directory been stretched? */
+            dp->obj.stat &= 3;
+            dp->obj.objsize += (DWORD)fs->csize * SS(fs);   /* Increase object size by cluster size */
+            res = fill_fat_chain(&dp->obj); /* Complement FAT chain if needed */
+            if (res != FR_OK) return res;
+            res = load_obj_dir(&dj, &dp->obj);
+            if (res != FR_OK) return res;   /* Load the object status */
+            st_qword(fs->dirbuf + XDIR_FileSize, dp->obj.objsize);      /* Update the allocation status */
+            st_qword(fs->dirbuf + XDIR_ValidFileSize, dp->obj.objsize);
+            fs->dirbuf[XDIR_GenFlags] = dp->obj.stat | 1;
+            res = store_xdir(&dj);          /* Store the object status */
+            if (res != FR_OK) return res;
+        }
+
+        create_xdir(fs->dirbuf, fs->lfnbuf);    /* Create on-memory directory block to be written later */
+        return FR_OK;
+    }
+#endif
+    /* On the FAT12/16/32 volume */
+    mem_cpy(sn, dp->fn, 12);
+    if (sn[NSFLAG] & NS_LOSS) {         /* When LFN is out of 8.3 format, generate a numbered name */
+        dp->fn[NSFLAG] = NS_NOLFN;      /* Find only SFN */
+        for (n = 1; n < 100; n++) {
+            gen_numname(dp->fn, sn, fs->lfnbuf, n); /* Generate a numbered name */
+            res = dir_find(dp);             /* Check if the name collides with existing SFN */
+            if (res != FR_OK) break;
+        }
+        if (n == 100) return FR_DENIED;     /* Abort if too many collisions */
+        if (res != FR_NO_FILE) return res;  /* Abort if the result is other than 'not collided' */
+        dp->fn[NSFLAG] = sn[NSFLAG];
+    }
+
+    /* Create an SFN with/without LFNs. */
+    nent = (sn[NSFLAG] & NS_LFN) ? (nlen + 12) / 13 + 1 : 1;    /* Number of entries to allocate */
+    res = dir_alloc(dp, nent);      /* Allocate entries */
+    if (res == FR_OK && --nent) {   /* Set LFN entry if needed */
+        res = dir_sdi(dp, dp->dptr - nent * SZDIRE);
+        if (res == FR_OK) {
+            sum = sum_sfn(dp->fn);  /* Checksum value of the SFN tied to the LFN */
+            do {                    /* Store LFN entries in bottom first */
+                res = move_window(fs, dp->sect);
+                if (res != FR_OK) break;
+                put_lfn(fs->lfnbuf, dp->dir, (BYTE)nent, sum);
+                fs->wflag = 1;
+                res = dir_next(dp, 0);  /* Next entry */
+            } while (res == FR_OK && --nent);
+        }
+    }
+
+#else   /* Non LFN configuration */
+    res = dir_alloc(dp, 1);     /* Allocate an entry for SFN */
+
+#endif
+
+    /* Set SFN entry */
+    if (res == FR_OK) {
+        res = move_window(fs, dp->sect);
+        if (res == FR_OK) {
+            mem_set(dp->dir, 0, SZDIRE);    /* Clean the entry */
+            mem_cpy(dp->dir + DIR_Name, dp->fn, 11);    /* Put SFN */
+#if _USE_LFN != 0
+            dp->dir[DIR_NTres] = dp->fn[NSFLAG] & (NS_BODY | NS_EXT);   /* Put NT flag */
+#endif
+            fs->wflag = 1;
+        }
+    }
+
+    return res;
+}
+
+#endif /* !_FS_READONLY */
+
+
+
+#if !_FS_READONLY && _FS_MINIMIZE == 0
+/*-----------------------------------------------------------------------*/
+/* Remove an object from the directory                                   */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT dir_remove (    /* FR_OK:Succeeded, FR_DISK_ERR:A disk error */
+    DIR* dp             /* Directory object pointing the entry to be removed */
+)
+{
+    FRESULT res;
+    FATFS *fs = dp->obj.fs;
+#if _USE_LFN != 0   /* LFN configuration */
+    DWORD last = dp->dptr;
+
+    res = (dp->blk_ofs == 0xFFFFFFFF) ? FR_OK : dir_sdi(dp, dp->blk_ofs);   /* Goto top of the entry block if LFN is exist */
+    if (res == FR_OK) {
+        do {
+            res = move_window(fs, dp->sect);
+            if (res != FR_OK) break;
+            /* Mark an entry 'deleted' */
+            if (_FS_EXFAT && fs->fs_type == FS_EXFAT) { /* On the exFAT volume */
+                dp->dir[XDIR_Type] &= 0x7F;
+            } else {                                    /* On the FAT12/16/32 volume */
+                dp->dir[DIR_Name] = DDEM;
+            }
+            fs->wflag = 1;
+            if (dp->dptr >= last) break;    /* If reached last entry then all entries of the object has been deleted. */
+            res = dir_next(dp, 0);  /* Next entry */
+        } while (res == FR_OK);
+        if (res == FR_NO_FILE) res = FR_INT_ERR;
+    }
+#else           /* Non LFN configuration */
+
+    res = move_window(fs, dp->sect);
+    if (res == FR_OK) {
+        dp->dir[DIR_Name] = DDEM;
+        fs->wflag = 1;
+    }
+#endif
+
+    return res;
+}
+
+#endif /* !_FS_READONLY && _FS_MINIMIZE == 0 */
+
+
+
+#if _FS_MINIMIZE <= 1 || _FS_RPATH >= 2
+/*-----------------------------------------------------------------------*/
+/* Get file information from directory entry                             */
+/*-----------------------------------------------------------------------*/
+
+static
+void get_fileinfo (     /* No return code */
+    DIR* dp,            /* Pointer to the directory object */
+    FILINFO* fno        /* Pointer to the file information to be filled */
+)
+{
+    UINT i, j;
+    TCHAR c;
+    DWORD tm;
+#if _USE_LFN != 0
+    WCHAR w, lfv;
+    FATFS *fs = dp->obj.fs;
+#endif
+
+
+    fno->fname[0] = 0;      /* Invaidate file info */
+    if (!dp->sect) return;  /* Exit if read pointer has reached end of directory */
+
+#if _USE_LFN != 0   /* LFN configuration */
+#if _FS_EXFAT
+    if (fs->fs_type == FS_EXFAT) {  /* On the exFAT volume */
+        get_xdir_info(fs->dirbuf, fno);
+        return;
+    } else
+#endif
+    {   /* On the FAT12/16/32 volume */
+        if (dp->blk_ofs != 0xFFFFFFFF) {    /* Get LFN if available */
+            i = j = 0;
+            while ((w = fs->lfnbuf[j++]) != 0) {    /* Get an LFN character */
+#if !_LFN_UNICODE
+                w = ff_convert(w, 0);       /* Unicode -> OEM */
+                if (w == 0) { i = 0; break; }   /* No LFN if it could not be converted */
+                if (_DF1S && w >= 0x100) {  /* Put 1st byte if it is a DBC (always false at SBCS cfg) */
+                    fno->fname[i++] = (char)(w >> 8);
+                }
+#endif
+                if (i >= _MAX_LFN) { i = 0; break; }    /* No LFN if buffer overflow */
+                fno->fname[i++] = (TCHAR)w;
+            }
+            fno->fname[i] = 0;  /* Terminate the LFN */
+        }
+    }
+
+    i = j = 0;
+    lfv = fno->fname[i];    /* LFN is exist if non-zero */
+    while (i < 11) {        /* Copy name body and extension */
+        c = (TCHAR)dp->dir[i++];
+        if (c == ' ') continue;             /* Skip padding spaces */
+        if (c == RDDEM) c = (TCHAR)DDEM;    /* Restore replaced DDEM character */
+        if (i == 9) {                       /* Insert a . if extension is exist */
+            if (!lfv) fno->fname[j] = '.';
+            fno->altname[j++] = '.';
+        }
+#if _LFN_UNICODE
+        if (IsDBCS1(c) && i != 8 && i != 11 && IsDBCS2(dp->dir[i])) {
+            c = c << 8 | dp->dir[i++];
+        }
+        c = ff_convert(c, 1);   /* OEM -> Unicode */
+        if (!c) c = '?';
+#endif
+        fno->altname[j] = c;
+        if (!lfv) {
+            if (IsUpper(c) && (dp->dir[DIR_NTres] & (i >= 9 ? NS_EXT : NS_BODY))) {
+                c += 0x20;          /* To lower */
+            }
+            fno->fname[j] = c;
+        }
+        j++;
+    }
+    if (!lfv) {
+        fno->fname[j] = 0;
+        if (!dp->dir[DIR_NTres]) j = 0; /* Altname is no longer needed if neither LFN nor case info is exist. */
+    }
+    fno->altname[j] = 0;    /* Terminate the SFN */
+
+#else   /* Non-LFN configuration */
+    i = j = 0;
+    while (i < 11) {        /* Copy name body and extension */
+        c = (TCHAR)dp->dir[i++];
+        if (c == ' ') continue;             /* Skip padding spaces */
+        if (c == RDDEM) c = (TCHAR)DDEM;    /* Restore replaced DDEM character */
+        if (i == 9) fno->fname[j++] = '.';  /* Insert a . if extension is exist */
+        fno->fname[j++] = c;
+    }
+    fno->fname[j] = 0;
+#endif
+
+    fno->fattrib = dp->dir[DIR_Attr];               /* Attribute */
+    fno->fsize = ld_dword(dp->dir + DIR_FileSize);  /* Size */
+    tm = ld_dword(dp->dir + DIR_ModTime);           /* Timestamp */
+    fno->ftime = (WORD)tm; fno->fdate = (WORD)(tm >> 16);
+}
+
+#endif /* _FS_MINIMIZE <= 1 || _FS_RPATH >= 2 */
+
+
+
+#if _USE_FIND && _FS_MINIMIZE <= 1
+/*-----------------------------------------------------------------------*/
+/* Pattern matching                                                      */
+/*-----------------------------------------------------------------------*/
+
+static
+WCHAR get_achar (       /* Get a character and advances ptr 1 or 2 */
+    const TCHAR** ptr   /* Pointer to pointer to the SBCS/DBCS/Unicode string */
+)
+{
+#if !_LFN_UNICODE
+    WCHAR chr;
+
+    chr = (BYTE)*(*ptr)++;                  /* Get a byte */
+    if (IsLower(chr)) chr -= 0x20;          /* To upper ASCII char */
+#ifdef _EXCVT
+    if (chr >= 0x80) chr = ExCvt[chr - 0x80];   /* To upper SBCS extended char */
+#else
+    if (IsDBCS1(chr) && IsDBCS2(**ptr)) {       /* Get DBC 2nd byte if needed */
+        chr = chr << 8 | (BYTE)*(*ptr)++;
+    }
+#endif
+    return chr;
+#else
+    return ff_wtoupper(*(*ptr)++);          /* Get a word and to upper */
+#endif
+}
+
+
+static
+int pattern_matching (  /* 0:not matched, 1:matched */
+    const TCHAR* pat,   /* Matching pattern */
+    const TCHAR* nam,   /* String to be tested */
+    int skip,           /* Number of pre-skip chars (number of ?s) */
+    int inf             /* Infinite search (* specified) */
+)
+{
+    const TCHAR *pp, *np;
+    WCHAR pc, nc;
+    int nm, nx;
+
+
+    while (skip--) {                /* Pre-skip name chars */
+        if (!get_achar(&nam)) return 0; /* Branch mismatched if less name chars */
+    }
+    if (!*pat && inf) return 1;     /* (short circuit) */
+
+    do {
+        pp = pat; np = nam;         /* Top of pattern and name to match */
+        for (;;) {
+            if (*pp == '?' || *pp == '*') { /* Wildcard? */
+                nm = nx = 0;
+                do {                /* Analyze the wildcard chars */
+                    if (*pp++ == '?') nm++; else nx = 1;
+                } while (*pp == '?' || *pp == '*');
+                if (pattern_matching(pp, np, nm, nx)) return 1; /* Test new branch (recurs upto number of wildcard blocks in the pattern) */
+                nc = *np; break;    /* Branch mismatched */
+            }
+            pc = get_achar(&pp);    /* Get a pattern char */
+            nc = get_achar(&np);    /* Get a name char */
+            if (pc != nc) break;    /* Branch mismatched? */
+            if (pc == 0) return 1;  /* Branch matched? (matched at end of both strings) */
+        }
+        get_achar(&nam);            /* nam++ */
+    } while (inf && nc);            /* Retry until end of name if infinite search is specified */
+
+    return 0;
+}
+
+#endif /* _USE_FIND && _FS_MINIMIZE <= 1 */
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Pick a top segment and create the object name in directory form       */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT create_name (   /* FR_OK: successful, FR_INVALID_NAME: could not create */
+    DIR* dp,            /* Pointer to the directory object */
+    const TCHAR** path  /* Pointer to pointer to the segment in the path string */
+)
+{
+#if _USE_LFN != 0   /* LFN configuration */
+    BYTE b, cf;
+    WCHAR w, *lfn;
+    UINT i, ni, si, di;
+    const TCHAR *p;
+
+    /* Create LFN in Unicode */
+    p = *path; lfn = dp->obj.fs->lfnbuf; si = di = 0;
+    for (;;) {
+        w = p[si++];                    /* Get a character */
+        if (w < ' ') break;             /* Break if end of the path name */
+        if (w == '/' || w == '\\') {    /* Break if a separator is found */
+            while (p[si] == '/' || p[si] == '\\') si++; /* Skip duplicated separator if exist */
+            break;
+        }
+        if (di >= _MAX_LFN) return FR_INVALID_NAME; /* Reject too long name */
+#if !_LFN_UNICODE
+        w &= 0xFF;
+        if (IsDBCS1(w)) {               /* Check if it is a DBC 1st byte (always false on SBCS cfg) */
+            b = (BYTE)p[si++];          /* Get 2nd byte */
+            w = (w << 8) + b;           /* Create a DBC */
+            if (!IsDBCS2(b)) return FR_INVALID_NAME;    /* Reject invalid sequence */
+        }
+        w = ff_convert(w, 1);           /* Convert ANSI/OEM to Unicode */
+        if (!w) return FR_INVALID_NAME; /* Reject invalid code */
+#endif
+        if (w < 0x80 && chk_chr("\"*:<>\?|\x7F", w)) return FR_INVALID_NAME;    /* Reject illegal characters for LFN */
+        lfn[di++] = w;                  /* Store the Unicode character */
+    }
+    *path = &p[si];                     /* Return pointer to the next segment */
+    cf = (w < ' ') ? NS_LAST : 0;       /* Set last segment flag if end of the path */
+#if _FS_RPATH != 0
+    if ((di == 1 && lfn[di - 1] == '.') ||
+        (di == 2 && lfn[di - 1] == '.' && lfn[di - 2] == '.')) {    /* Is this segment a dot name? */
+        lfn[di] = 0;
+        for (i = 0; i < 11; i++)        /* Create dot name for SFN entry */
+            dp->fn[i] = (i < di) ? '.' : ' ';
+        dp->fn[i] = cf | NS_DOT;        /* This is a dot entry */
+        return FR_OK;
+    }
+#endif
+    while (di) {                        /* Snip off trailing spaces and dots if exist */
+        w = lfn[di - 1];
+        if (w != ' ' && w != '.') break;
+        di--;
+    }
+    lfn[di] = 0;                        /* LFN is created */
+    if (di == 0) return FR_INVALID_NAME;    /* Reject nul name */
+
+    /* Create SFN in directory form */
+    mem_set(dp->fn, ' ', 11);
+    for (si = 0; lfn[si] == ' ' || lfn[si] == '.'; si++) ;  /* Strip leading spaces and dots */
+    if (si) cf |= NS_LOSS | NS_LFN;
+    while (di && lfn[di - 1] != '.') di--;  /* Find extension (di<=si: no extension) */
+
+    i = b = 0; ni = 8;
+    for (;;) {
+        w = lfn[si++];                  /* Get an LFN character */
+        if (!w) break;                  /* Break on end of the LFN */
+        if (w == ' ' || (w == '.' && si != di)) {   /* Remove spaces and dots */
+            cf |= NS_LOSS | NS_LFN; continue;
+        }
+
+        if (i >= ni || si == di) {      /* Extension or end of SFN */
+            if (ni == 11) {             /* Long extension */
+                cf |= NS_LOSS | NS_LFN; break;
+            }
+            if (si != di) cf |= NS_LOSS | NS_LFN;   /* Out of 8.3 format */
+            if (si > di) break;         /* No extension */
+            si = di; i = 8; ni = 11;    /* Enter extension section */
+            b <<= 2; continue;
+        }
+
+        if (w >= 0x80) {                /* Non ASCII character */
+#ifdef _EXCVT
+            w = ff_convert(w, 0);       /* Unicode -> OEM code */
+            if (w) w = ExCvt[w - 0x80]; /* Convert extended character to upper (SBCS) */
+#else
+            w = ff_convert(ff_wtoupper(w), 0);  /* Upper converted Unicode -> OEM code */
+#endif
+            cf |= NS_LFN;               /* Force create LFN entry */
+        }
+
+        if (_DF1S && w >= 0x100) {      /* Is this DBC? (always false at SBCS cfg) */
+            if (i >= ni - 1) {
+                cf |= NS_LOSS | NS_LFN; i = ni; continue;
+            }
+            dp->fn[i++] = (BYTE)(w >> 8);
+        } else {                        /* SBC */
+            if (!w || chk_chr("+,;=[]", w)) {   /* Replace illegal characters for SFN */
+                w = '_'; cf |= NS_LOSS | NS_LFN;/* Lossy conversion */
+            } else {
+                if (IsUpper(w)) {       /* ASCII large capital */
+                    b |= 2;
+                } else {
+                    if (IsLower(w)) {   /* ASCII small capital */
+                        b |= 1; w -= 0x20;
+                    }
+                }
+            }
+        }
+        dp->fn[i++] = (BYTE)w;
+    }
+
+    if (dp->fn[0] == DDEM) dp->fn[0] = RDDEM;   /* If the first character collides with DDEM, replace it with RDDEM */
+
+    if (ni == 8) b <<= 2;
+    if ((b & 0x0C) == 0x0C || (b & 0x03) == 0x03) cf |= NS_LFN; /* Create LFN entry when there are composite capitals */
+    if (!(cf & NS_LFN)) {                       /* When LFN is in 8.3 format without extended character, NT flags are created */
+        if ((b & 0x03) == 0x01) cf |= NS_EXT;   /* NT flag (Extension has only small capital) */
+        if ((b & 0x0C) == 0x04) cf |= NS_BODY;  /* NT flag (Filename has only small capital) */
+    }
+
+    dp->fn[NSFLAG] = cf;    /* SFN is created */
+
+    return FR_OK;
+
+
+#else   /* _USE_LFN != 0 : Non-LFN configuration */
+    BYTE c, d, *sfn;
+    UINT ni, si, i;
+    const char *p;
+
+    /* Create file name in directory form */
+    p = *path; sfn = dp->fn;
+    mem_set(sfn, ' ', 11);
+    si = i = 0; ni = 8;
+#if _FS_RPATH != 0
+    if (p[si] == '.') { /* Is this a dot entry? */
+        for (;;) {
+            c = (BYTE)p[si++];
+            if (c != '.' || si >= 3) break;
+            sfn[i++] = c;
+        }
+        if (c != '/' && c != '\\' && c > ' ') return FR_INVALID_NAME;
+        *path = p + si;                             /* Return pointer to the next segment */
+        sfn[NSFLAG] = (c <= ' ') ? NS_LAST | NS_DOT : NS_DOT;   /* Set last segment flag if end of the path */
+        return FR_OK;
+    }
+#endif
+    for (;;) {
+        c = (BYTE)p[si++];
+        if (c <= ' ') break;            /* Break if end of the path name */
+        if (c == '/' || c == '\\') {    /* Break if a separator is found */
+            while (p[si] == '/' || p[si] == '\\') si++; /* Skip duplicated separator if exist */
+            break;
+        }
+        if (c == '.' || i >= ni) {      /* End of body or over size? */
+            if (ni == 11 || c != '.') return FR_INVALID_NAME;   /* Over size or invalid dot */
+            i = 8; ni = 11;             /* Goto extension */
+            continue;
+        }
+        if (c >= 0x80) {                /* Extended character? */
+#ifdef _EXCVT
+            c = ExCvt[c - 0x80];        /* To upper extended characters (SBCS cfg) */
+#else
+#if !_DF1S
+            return FR_INVALID_NAME;     /* Reject extended characters (ASCII only cfg) */
+#endif
+#endif
+        }
+        if (IsDBCS1(c)) {               /* Check if it is a DBC 1st byte (always false at SBCS cfg.) */
+            d = (BYTE)p[si++];          /* Get 2nd byte */
+            if (!IsDBCS2(d) || i >= ni - 1) return FR_INVALID_NAME; /* Reject invalid DBC */
+            sfn[i++] = c;
+            sfn[i++] = d;
+        } else {                        /* SBC */
+            if (chk_chr("\"*+,:;<=>\?[]|\x7F", c)) return FR_INVALID_NAME;  /* Reject illegal chrs for SFN */
+            if (IsLower(c)) c -= 0x20;  /* To upper */
+            sfn[i++] = c;
+        }
+    }
+    *path = p + si;                     /* Return pointer to the next segment */
+    if (i == 0) return FR_INVALID_NAME; /* Reject nul string */
+
+    if (sfn[0] == DDEM) sfn[0] = RDDEM; /* If the first character collides with DDEM, replace it with RDDEM */
+    sfn[NSFLAG] = (c <= ' ') ? NS_LAST : 0;     /* Set last segment flag if end of the path */
+
+    return FR_OK;
+#endif /* _USE_LFN != 0 */
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Follow a file path                                                    */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT follow_path (   /* FR_OK(0): successful, !=0: error code */
+    DIR* dp,            /* Directory object to return last directory and found object */
+    const TCHAR* path   /* Full-path string to find a file or directory */
+)
+{
+    FRESULT res;
+    BYTE ns;
+    _FDID *obj = &dp->obj;
+    FATFS *fs = obj->fs;
+
+
+#if _FS_RPATH != 0
+    if (*path != '/' && *path != '\\') {    /* Without heading separator */
+        obj->sclust = fs->cdir;             /* Start from the current directory */
+    } else
+#endif
+    {                                       /* With heading separator */
+        while (*path == '/' || *path == '\\') path++;   /* Strip heading separator */
+        obj->sclust = 0;                    /* Start from the root directory */
+    }
+#if _FS_EXFAT && _FS_RPATH != 0
+    if (fs->fs_type == FS_EXFAT && obj->sclust) {   /* Retrieve the sub-directory status if needed */
+        DIR dj;
+
+        obj->c_scl = fs->cdc_scl;
+        obj->c_size = fs->cdc_size;
+        obj->c_ofs = fs->cdc_ofs;
+        res = load_obj_dir(&dj, obj);
+        if (res != FR_OK) return res;
+        obj->objsize = ld_dword(fs->dirbuf + XDIR_FileSize);
+        obj->stat = fs->dirbuf[XDIR_GenFlags] & 2;
+    }
+#endif
+
+    if ((UINT)*path < ' ') {                /* Null path name is the origin directory itself */
+        dp->fn[NSFLAG] = NS_NONAME;
+        res = dir_sdi(dp, 0);
+
+    } else {                                /* Follow path */
+        for (;;) {
+            res = create_name(dp, &path);   /* Get a segment name of the path */
+            if (res != FR_OK) break;
+            res = dir_find(dp);             /* Find an object with the segment name */
+            ns = dp->fn[NSFLAG];
+            if (res != FR_OK) {             /* Failed to find the object */
+                if (res == FR_NO_FILE) {    /* Object is not found */
+                    if (_FS_RPATH && (ns & NS_DOT)) {   /* If dot entry is not exist, stay there */
+                        if (!(ns & NS_LAST)) continue;  /* Continue to follow if not last segment */
+                        dp->fn[NSFLAG] = NS_NONAME;
+                        res = FR_OK;
+                    } else {                            /* Could not find the object */
+                        if (!(ns & NS_LAST)) res = FR_NO_PATH;  /* Adjust error code if not last segment */
+                    }
+                }
+                break;
+            }
+            if (ns & NS_LAST) break;            /* Last segment matched. Function completed. */
+            /* Get into the sub-directory */
+            if (!(obj->attr & AM_DIR)) {        /* It is not a sub-directory and cannot follow */
+                res = FR_NO_PATH; break;
+            }
+#if _FS_EXFAT
+            if (fs->fs_type == FS_EXFAT) {
+                obj->c_scl = obj->sclust;       /* Save containing directory information for next dir */
+                obj->c_size = ((DWORD)obj->objsize & 0xFFFFFF00) | obj->stat;
+                obj->c_ofs = dp->blk_ofs;
+                obj->sclust = ld_dword(fs->dirbuf + XDIR_FstClus);  /* Open next directory */
+                obj->stat = fs->dirbuf[XDIR_GenFlags] & 2;
+                obj->objsize = ld_qword(fs->dirbuf + XDIR_FileSize);
+            } else
+#endif
+            {
+                obj->sclust = ld_clust(fs, fs->win + dp->dptr % SS(fs));    /* Open next directory */
+            }
+        }
+    }
+
+    return res;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Load a sector and check if it is an FAT boot sector                   */
+/*-----------------------------------------------------------------------*/
+
+static
+BYTE check_fs ( /* 0:FAT, 1:exFAT, 2:Valid BS but not FAT, 3:Not a BS, 4:Disk error */
+    FATFS* fs,  /* File system object */
+    DWORD sect  /* Sector# (lba) to check if it is an FAT-VBR or not */
+)
+{
+    fs->wflag = 0; fs->winsect = 0xFFFFFFFF;        /* Invaidate window */
+    if (move_window(fs, sect) != FR_OK) return 4;   /* Load boot record */
+
+    if (ld_word(fs->win + BS_55AA) != 0xAA55) return 3; /* Check boot record signature (always placed at offset 510 even if the sector size is >512) */
+
+    if (fs->win[BS_JmpBoot] == 0xE9 || (fs->win[BS_JmpBoot] == 0xEB && fs->win[BS_JmpBoot + 2] == 0x90)) {
+        if ((ld_dword(fs->win + BS_FilSysType) & 0xFFFFFF) == 0x544146) return 0;   /* Check "FAT" string */
+        if (ld_dword(fs->win + BS_FilSysType32) == 0x33544146) return 0;            /* Check "FAT3" string */
+    }
+#if _FS_EXFAT
+    if (!mem_cmp(fs->win + BS_JmpBoot, "\xEB\x76\x90" "EXFAT   ", 11)) return 1;
+#endif
+    return 2;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Find logical drive and check if the volume is mounted                 */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT find_volume (   /* FR_OK(0): successful, !=0: any error occurred */
+    FATFS* fs,          /* Pointer to the file system object */
+    BYTE mode           /* !=0: Check write protection for write access */
+)
+{
+    BYTE fmt, *pt;
+    DSTATUS stat;
+    DWORD bsect, fasize, tsect, sysect, nclst, szbfat, br[4];
+    WORD nrsv;
+    UINT i;
+
+
+    ENTER_FF(fs);                       /* Lock the volume */
+
+    mode &= (BYTE)~FA_READ;             /* Desired access mode, write access or not */
+    if (fs->fs_type) {                  /* If the volume has been mounted */
+        disk_ioctl(fs->drv, IOCTL_STATUS, &stat);
+        if (!(stat & STA_NOINIT)) {     /* and the physical drive is kept initialized */
+            if (!_FS_READONLY && mode && (stat & STA_PROTECT)) {    /* Check write protection if needed */
+                return FR_WRITE_PROTECTED;
+            }
+            return FR_OK;               /* The file system object is valid */
+        }
+    }
+
+    /* The file system object is not valid. */
+    /* Following code attempts to mount the volume. (analyze BPB and initialize the fs object) */
+
+    fs->fs_type = 0;                    /* Clear the file system object */
+    disk_ioctl(fs->drv, IOCTL_INIT, &stat); /* Initialize the physical drive */
+    if (stat & STA_NOINIT) {            /* Check if the initialization succeeded */
+        return FR_NOT_READY;            /* Failed to initialize due to no medium or hard error */
+    }
+    if (!_FS_READONLY && mode && (stat & STA_PROTECT)) { /* Check disk write protection if needed */
+        return FR_WRITE_PROTECTED;
+    }
+#if _MAX_SS != _MIN_SS                      /* Get sector size (multiple sector size cfg only) */
+    if (disk_ioctl(fs->drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK) return FR_DISK_ERR;
+    if (SS(fs) > _MAX_SS || SS(fs) < _MIN_SS || (SS(fs) & (SS(fs) - 1))) return FR_DISK_ERR;
+#endif
+    /* Find an FAT partition on the drive. Supports only generic partitioning, FDISK and SFD. */
+    bsect = 0;
+    fmt = check_fs(fs, bsect);          /* Load sector 0 and check if it is an FAT-VBR as SFD */
+    if (fmt == 2 || (fmt < 2 && LD2PT(fs) != 0)) { /* Not an FAT-VBR or forced partition number */
+        for (i = 0; i < 4; i++) {           /* Get partition offset */
+            pt = fs->win + (MBR_Table + i * SZ_PTE);
+            br[i] = pt[PTE_System] ? ld_dword(pt + PTE_StLba) : 0;
+        }
+        i = LD2PT(fs);                      /* Partition number: 0:auto, 1-4:forced */
+        if (i) i--;
+        do {                                /* Find an FAT volume */
+            bsect = br[i];
+            fmt = bsect ? check_fs(fs, bsect) : 3;  /* Check the partition */
+        } while (!LD2PT(fs) && fmt >= 2 && ++i < 4);
+    }
+    if (fmt == 4) return FR_DISK_ERR;       /* An error occured in the disk I/O layer */
+    if (fmt >= 2) return FR_NO_FILESYSTEM;  /* No FAT volume is found */
+
+    /* An FAT volume is found. Following code initializes the file system object */
+
+#if _FS_EXFAT
+    if (fmt == 1) {
+        QWORD maxlba;
+
+        for (i = BPB_ZeroedEx; i < BPB_ZeroedEx + 53 && fs->win[i] == 0; i++) ; /* Check zero filler */
+        if (i < BPB_ZeroedEx + 53) return FR_NO_FILESYSTEM;
+
+        if (ld_word(fs->win + BPB_FSVerEx) != 0x100) return FR_NO_FILESYSTEM;   /* Check exFAT revision (Must be 1.0) */
+
+        if (1 << fs->win[BPB_BytsPerSecEx] != SS(fs))   /* (BPB_BytsPerSecEx must be equal to the physical sector size) */
+            return FR_NO_FILESYSTEM;
+
+        maxlba = ld_qword(fs->win + BPB_TotSecEx) + bsect;  /* Last LBA + 1 of the volume */
+        if (maxlba >= 0x100000000) return FR_NO_FILESYSTEM; /* (It cannot be handled in 32-bit LBA) */
+
+        fs->fsize = ld_dword(fs->win + BPB_FatSzEx);    /* Number of sectors per FAT */
+
+        fs->n_fats = fs->win[BPB_NumFATsEx];            /* Number of FATs */
+        if (fs->n_fats != 1) return FR_NO_FILESYSTEM;   /* (Supports only 1 FAT) */
+
+        fs->csize = 1 << fs->win[BPB_SecPerClusEx];     /* Cluster size */
+        if (fs->csize == 0) return FR_NO_FILESYSTEM;    /* (Must be 1..32768) */
+
+        nclst = ld_dword(fs->win + BPB_NumClusEx);      /* Number of clusters */
+        if (nclst > MAX_EXFAT) return FR_NO_FILESYSTEM; /* (Too many clusters) */
+        fs->n_fatent = nclst + 2;
+
+        /* Boundaries and Limits */
+        fs->volbase = bsect;
+        fs->database = bsect + ld_dword(fs->win + BPB_DataOfsEx);
+        fs->fatbase = bsect + ld_dword(fs->win + BPB_FatOfsEx);
+        if (maxlba < (QWORD)fs->database + nclst * fs->csize) return FR_NO_FILESYSTEM;  /* (Volume size must not be smaller than the size requiered) */
+        fs->dirbase = ld_dword(fs->win + BPB_RootClusEx);
+
+        /* Check if bitmap location is in assumption (at the first cluster) */
+        if (move_window(fs, clust2sect(fs, fs->dirbase)) != FR_OK) return FR_DISK_ERR;
+        for (i = 0; i < SS(fs); i += SZDIRE) {
+            if (fs->win[i] == 0x81 && ld_dword(fs->win + i + 20) == 2) break;   /* 81 entry with cluster #2? */
+        }
+        if (i == SS(fs)) return FR_NO_FILESYSTEM;
+#if !_FS_READONLY
+        fs->last_clst = fs->free_clst = 0xFFFFFFFF;     /* Initialize cluster allocation information */
+#endif
+        fmt = FS_EXFAT;         /* FAT sub-type */
+    } else
+#endif  /* _FS_EXFAT */
+    {
+        if (ld_word(fs->win + BPB_BytsPerSec) != SS(fs)) return FR_NO_FILESYSTEM;   /* (BPB_BytsPerSec must be equal to the physical sector size) */
+
+        fasize = ld_word(fs->win + BPB_FATSz16);            /* Number of sectors per FAT */
+        if (fasize == 0) fasize = ld_dword(fs->win + BPB_FATSz32);
+        fs->fsize = fasize;
+
+        fs->n_fats = fs->win[BPB_NumFATs];                  /* Number of FATs */
+        if (fs->n_fats != 1 && fs->n_fats != 2) return FR_NO_FILESYSTEM;    /* (Must be 1 or 2) */
+        fasize *= fs->n_fats;                               /* Number of sectors for FAT area */
+
+        fs->csize = fs->win[BPB_SecPerClus];                /* Cluster size */
+        if (fs->csize == 0 || (fs->csize & (fs->csize - 1))) return FR_NO_FILESYSTEM;   /* (Must be power of 2) */
+
+        fs->n_rootdir = ld_word(fs->win + BPB_RootEntCnt);  /* Number of root directory entries */
+        if (fs->n_rootdir % (SS(fs) / SZDIRE)) return FR_NO_FILESYSTEM; /* (Must be sector aligned) */
+
+        tsect = ld_word(fs->win + BPB_TotSec16);            /* Number of sectors on the volume */
+        if (tsect == 0) tsect = ld_dword(fs->win + BPB_TotSec32);
+
+        nrsv = ld_word(fs->win + BPB_RsvdSecCnt);           /* Number of reserved sectors */
+        if (nrsv == 0) return FR_NO_FILESYSTEM;             /* (Must not be 0) */
+
+        /* Determine the FAT sub type */
+        sysect = nrsv + fasize + fs->n_rootdir / (SS(fs) / SZDIRE); /* RSV + FAT + DIR */
+        if (tsect < sysect) return FR_NO_FILESYSTEM;        /* (Invalid volume size) */
+        nclst = (tsect - sysect) / fs->csize;               /* Number of clusters */
+        if (nclst == 0) return FR_NO_FILESYSTEM;            /* (Invalid volume size) */
+        fmt = FS_FAT32;
+        if (nclst <= MAX_FAT16) fmt = FS_FAT16;
+        if (nclst <= MAX_FAT12) fmt = FS_FAT12;
+
+        /* Boundaries and Limits */
+        fs->n_fatent = nclst + 2;                           /* Number of FAT entries */
+        fs->volbase = bsect;                                /* Volume start sector */
+        fs->fatbase = bsect + nrsv;                         /* FAT start sector */
+        fs->database = bsect + sysect;                      /* Data start sector */
+        if (fmt == FS_FAT32) {
+            if (ld_word(fs->win + BPB_FSVer32) != 0) return FR_NO_FILESYSTEM;   /* (Must be FAT32 revision 0.0) */
+            if (fs->n_rootdir) return FR_NO_FILESYSTEM;     /* (BPB_RootEntCnt must be 0) */
+            fs->dirbase = ld_dword(fs->win + BPB_RootClus32);   /* Root directory start cluster */
+            szbfat = fs->n_fatent * 4;                      /* (Needed FAT size) */
+        } else {
+            if (fs->n_rootdir == 0) return FR_NO_FILESYSTEM;/* (BPB_RootEntCnt must not be 0) */
+            fs->dirbase = fs->fatbase + fasize;             /* Root directory start sector */
+            szbfat = (fmt == FS_FAT16) ?                    /* (Needed FAT size) */
+                fs->n_fatent * 2 : fs->n_fatent * 3 / 2 + (fs->n_fatent & 1);
+        }
+        if (fs->fsize < (szbfat + (SS(fs) - 1)) / SS(fs)) return FR_NO_FILESYSTEM;  /* (BPB_FATSz must not be less than the size needed) */
+
+#if !_FS_READONLY
+        /* Get FSINFO if available */
+        fs->last_clst = fs->free_clst = 0xFFFFFFFF;     /* Initialize cluster allocation information */
+        fs->fsi_flag = 0x80;
+#if (_FS_NOFSINFO & 3) != 3
+        if (fmt == FS_FAT32             /* Enable FSINFO only if FAT32 and BPB_FSInfo32 == 1 */
+            && ld_word(fs->win + BPB_FSInfo32) == 1
+            && move_window(fs, bsect + 1) == FR_OK)
+        {
+            fs->fsi_flag = 0;
+            if (ld_word(fs->win + BS_55AA) == 0xAA55    /* Load FSINFO data if available */
+                && ld_dword(fs->win + FSI_LeadSig) == 0x41615252
+                && ld_dword(fs->win + FSI_StrucSig) == 0x61417272)
+            {
+#if (_FS_NOFSINFO & 1) == 0
+                fs->free_clst = ld_dword(fs->win + FSI_Free_Count);
+#endif
+#if (_FS_NOFSINFO & 2) == 0
+                fs->last_clst = ld_dword(fs->win + FSI_Nxt_Free);
+#endif
+            }
+        }
+#endif  /* (_FS_NOFSINFO & 3) != 3 */
+#endif  /* !_FS_READONLY */
+    }
+
+    fs->fs_type = fmt;  /* FAT sub-type */
+    fs->id = ++Fsid;    /* File system mount ID */
+#if _USE_LFN == 1
+    fs->lfnbuf = LfnBuf;    /* Static LFN working buffer */
+#if _FS_EXFAT
+    fs->dirbuf = DirBuf;    /* Static directory block working buuffer */
+#endif
+#endif
+#if _FS_RPATH != 0
+    fs->cdir = 0;       /* Initialize current directory */
+#endif
+#if _FS_LOCK != 0       /* Clear file lock semaphores */
+    clear_lock(fs);
+#endif
+    return FR_OK;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Check if the file/directory object is valid or not                    */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT validate (  /* Returns FR_OK or FR_INVALID_OBJECT */
+    _FDID* obj,     /* Pointer to the _OBJ, the 1st member in the FIL/DIR object, to check validity */
+    FATFS** fs      /* Pointer to pointer to the owner file system object to return */
+)
+{
+    FRESULT res;
+    DSTATUS stat;
+
+
+    if (!obj || !obj->fs || !obj->fs->fs_type || obj->fs->id != obj->id || disk_ioctl(obj->fs->drv, IOCTL_STATUS, &stat) != RES_OK || (stat & STA_NOINIT)) {
+        *fs = 0;                /* The object is invalid */
+        res = FR_INVALID_OBJECT;
+    } else {
+        *fs = obj->fs;          /* Owner file sytem object */
+        ENTER_FF(obj->fs);      /* Lock file system */
+        res = FR_OK;
+    }
+    return res;
+}
+
+
+
+
+/*---------------------------------------------------------------------------
+
+   Public Functions (FatFs API)
+
+----------------------------------------------------------------------------*/
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Mount/Unmount a Logical Drive                                         */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_mount (
+    FATFS* fs           /* Pointer to the file system object to mount */
+)
+{
+    FRESULT res;
+
+    fs->fs_type = 0;                    /* Clear new fs object */
+#if _FS_REENTRANT                       /* Create sync object for the new volume */
+    if (!ff_cre_syncobj(fs, &fs->sobj)) return FR_INT_ERR;
+#endif
+
+    res = find_volume(fs, 0);           /* Force mounted the volume */
+    LEAVE_FF(fs, res);
+}
+
+
+FRESULT f_umount (
+    FATFS* fs                   /* Pointer to the file system object to unmount */
+)
+{
+#if _FS_LOCK
+    clear_lock(fs);
+#endif
+#if _FS_REENTRANT               /* Discard sync object of the current volume */
+    if (!ff_del_syncobj(fs->sobj)) return FR_INT_ERR;
+#endif
+    fs->fs_type = 0;            /* Clear old fs object */
+
+    return FR_OK;
+}
+
+
+/*-----------------------------------------------------------------------*/
+/* Open or Create a File                                                 */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_open (
+    FATFS *fs,
+    FIL* fp,            /* Pointer to the blank file object */
+    const TCHAR* path,  /* Pointer to the file name */
+    BYTE mode           /* Access mode and file open mode flags */
+)
+{
+    FRESULT res;
+    DIR dj;
+#if !_FS_READONLY
+    DWORD dw, cl, bcs, clst, sc;
+    FSIZE_t ofs;
+#endif
+    DEF_NAMBUF
+
+
+    if (!fp) return FR_INVALID_OBJECT;
+
+    /* Get logical drive */
+    mode &= _FS_READONLY ? FA_READ : FA_READ | FA_WRITE | FA_CREATE_ALWAYS | FA_CREATE_NEW | FA_OPEN_ALWAYS | FA_OPEN_APPEND | FA_SEEKEND;
+    res = find_volume(fs, mode);
+    if (res == FR_OK) {
+        dj.obj.fs = fs;
+        INIT_NAMBUF(fs);
+        res = follow_path(&dj, path);   /* Follow the file path */
+#if !_FS_READONLY   /* R/W configuration */
+        if (res == FR_OK) {
+            if (dj.fn[NSFLAG] & NS_NONAME) {    /* Origin directory itself? */
+                res = FR_INVALID_NAME;
+            }
+#if _FS_LOCK != 0
+            else {
+                res = chk_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
+            }
+#endif
+        }
+        /* Create or Open a file */
+        if (mode & (FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)) {
+            if (res != FR_OK) {                 /* No file, create new */
+                if (res == FR_NO_FILE)          /* There is no file to open, create a new entry */
+#if _FS_LOCK != 0
+                    res = enq_lock() ? dir_register(&dj) : FR_TOO_MANY_OPEN_FILES;
+#else
+                    res = dir_register(&dj);
+#endif
+                mode |= FA_CREATE_ALWAYS;       /* File is created */
+            }
+            else {                              /* Any object is already existing */
+                if (dj.obj.attr & (AM_RDO | AM_DIR)) {  /* Cannot overwrite it (R/O or DIR) */
+                    res = FR_DENIED;
+                } else {
+                    if (mode & FA_CREATE_NEW) res = FR_EXIST;   /* Cannot create as new file */
+                }
+            }
+            if (res == FR_OK && (mode & FA_CREATE_ALWAYS)) {    /* Truncate it if overwrite mode */
+                dw = GET_FATTIME();
+#if _FS_EXFAT
+                if (fs->fs_type == FS_EXFAT) {
+                    /* Get current allocation info */
+                    fp->obj.fs = fs;
+                    fp->obj.sclust = ld_dword(fs->dirbuf + XDIR_FstClus);
+                    fp->obj.objsize = ld_qword(fs->dirbuf + XDIR_FileSize);
+                    fp->obj.stat = fs->dirbuf[XDIR_GenFlags] & 2;
+                    /* Initialize directory entry block */
+                    st_dword(fs->dirbuf + XDIR_CrtTime, dw);    /* Set created time */
+                    fs->dirbuf[XDIR_CrtTime10] = 0;
+                    st_dword(fs->dirbuf + XDIR_ModTime, dw);    /* Set modified time */
+                    fs->dirbuf[XDIR_ModTime10] = 0;
+                    fs->dirbuf[XDIR_Attr] = AM_ARC;             /* Reset attribute */
+                    st_dword(fs->dirbuf + XDIR_FstClus, 0);     /* Reset file allocation info */
+                    st_qword(fs->dirbuf + XDIR_FileSize, 0);
+                    st_qword(fs->dirbuf + XDIR_ValidFileSize, 0);
+                    fs->dirbuf[XDIR_GenFlags] = 1;
+                    res = store_xdir(&dj);
+                    if (res == FR_OK && fp->obj.sclust) {       /* Remove the cluster chain if exist */
+                        res = remove_chain(&fp->obj, fp->obj.sclust, 0);
+                        fs->last_clst = fp->obj.sclust - 1;     /* Reuse the cluster hole */
+                    }
+                } else
+#endif
+                {
+                    /* Clean directory info */
+                    st_dword(dj.dir + DIR_CrtTime, dw); /* Set created time */
+                    st_dword(dj.dir + DIR_ModTime, dw); /* Set modified time */
+                    dj.dir[DIR_Attr] = AM_ARC;          /* Reset attribute */
+                    cl = ld_clust(fs, dj.dir);          /* Get cluster chain */
+                    st_clust(fs, dj.dir, 0);            /* Reset file allocation info */
+                    st_dword(dj.dir + DIR_FileSize, 0);
+                    fs->wflag = 1;
+
+                    if (cl) {                           /* Remove the cluster chain if exist */
+                        dw = fs->winsect;
+                        res = remove_chain(&dj.obj, cl, 0);
+                        if (res == FR_OK) {
+                            res = move_window(fs, dw);
+                            fs->last_clst = cl - 1;     /* Reuse the cluster hole */
+                        }
+                    }
+                }
+            }
+        }
+        else {  /* Open an existing file */
+            if (res == FR_OK) {                 /* Following succeeded */
+                if (dj.obj.attr & AM_DIR) {     /* It is a directory */
+                    res = FR_NO_FILE;
+                } else {
+                    if ((mode & FA_WRITE) && (dj.obj.attr & AM_RDO)) { /* R/O violation */
+                        res = FR_DENIED;
+                    }
+                }
+            }
+        }
+        if (res == FR_OK) {
+            if (mode & FA_CREATE_ALWAYS)        /* Set file change flag if created or overwritten */
+                mode |= FA_MODIFIED;
+            fp->dir_sect = fs->winsect;         /* Pointer to the directory entry */
+            fp->dir_ptr = dj.dir;
+#if _FS_LOCK != 0
+            fp->obj.lockid = inc_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
+            if (!fp->obj.lockid) res = FR_INT_ERR;
+#endif
+        }
+#else       /* R/O configuration */
+        if (res == FR_OK) {
+            if (dj.fn[NSFLAG] & NS_NONAME) {    /* Origin directory itself? */
+                res = FR_INVALID_NAME;
+            } else {
+                if (dj.obj.attr & AM_DIR) {     /* It is a directory */
+                    res = FR_NO_FILE;
+                }
+            }
+        }
+#endif
+
+        if (res == FR_OK) {
+#if _FS_EXFAT
+            if (fs->fs_type == FS_EXFAT) {
+                fp->obj.sclust = ld_dword(fs->dirbuf + XDIR_FstClus);       /* Get allocation info */
+                fp->obj.objsize = ld_qword(fs->dirbuf + XDIR_FileSize);
+                fp->obj.stat = fs->dirbuf[XDIR_GenFlags] & 2;
+                fp->obj.c_scl = dj.obj.sclust;
+                fp->obj.c_size = ((DWORD)dj.obj.objsize & 0xFFFFFF00) | dj.obj.stat;
+                fp->obj.c_ofs = dj.blk_ofs;
+            } else
+#endif
+            {
+                fp->obj.sclust = ld_clust(fs, dj.dir);              /* Get allocation info */
+                fp->obj.objsize = ld_dword(dj.dir + DIR_FileSize);
+            }
+#if _USE_FASTSEEK
+            fp->cltbl = 0;          /* Disable fast seek mode */
+#endif
+            fp->obj.fs = fs;        /* Validate the file object */
+            fp->obj.id = fs->id;
+            fp->flag = mode;        /* Set file access mode */
+            fp->err = 0;            /* Clear error flag */
+            fp->sect = 0;           /* Invalidate current data sector */
+            fp->fptr = 0;           /* Set file pointer top of the file */
+#if !_FS_READONLY
+#if !_FS_TINY
+            mem_set(fp->buf, 0, _MAX_SS);   /* Clear sector buffer */
+#endif
+            if ((mode & FA_SEEKEND) && fp->obj.objsize > 0) {   /* Seek to end of file if FA_OPEN_APPEND is specified */
+                fp->fptr = fp->obj.objsize;         /* Offset to seek */
+                bcs = (DWORD)fs->csize * SS(fs);    /* Cluster size in byte */
+                clst = fp->obj.sclust;              /* Follow the cluster chain */
+                for (ofs = fp->obj.objsize; res == FR_OK && ofs > bcs; ofs -= bcs) {
+                    clst = get_fat(&fp->obj, clst);
+                    if (clst <= 1) res = FR_INT_ERR;
+                    if (clst == 0xFFFFFFFF) res = FR_DISK_ERR;
+                }
+                fp->clust = clst;
+                if (res == FR_OK && ofs % SS(fs)) { /* Fill sector buffer if not on the sector boundary */
+                    if ((sc = clust2sect(fs, clst)) == 0) {
+                        res = FR_INT_ERR;
+                    } else {
+                        fp->sect = sc + (DWORD)(ofs / SS(fs));
+#if !_FS_TINY
+                        if (disk_read(fs->drv, fp->buf, fp->sect, 1) != RES_OK) res = FR_DISK_ERR;
+#endif
+                    }
+                }
+            }
+#endif
+        }
+
+        FREE_NAMBUF();
+    }
+
+    if (res != FR_OK) fp->obj.fs = 0;   /* Invalidate file object on error */
+
+    LEAVE_FF(fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Read File                                                             */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_read (
+    FIL* fp,    /* Pointer to the file object */
+    void* buff, /* Pointer to data buffer */
+    UINT btr,   /* Number of bytes to read */
+    UINT* br    /* Pointer to number of bytes read */
+)
+{
+    FRESULT res;
+    FATFS *fs;
+    DWORD clst, sect;
+    FSIZE_t remain;
+    UINT rcnt, cc, csect;
+    BYTE *rbuff = (BYTE*)buff;
+
+
+    *br = 0;    /* Clear read byte counter */
+    res = validate(&fp->obj, &fs);              /* Check validity of the file object */
+    if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res);   /* Check validity */
+    if (!(fp->flag & FA_READ)) LEAVE_FF(fs, FR_DENIED); /* Check access mode */
+    remain = fp->obj.objsize - fp->fptr;
+    if (btr > remain) btr = (UINT)remain;       /* Truncate btr by remaining bytes */
+
+    for ( ;  btr;                               /* Repeat until all data read */
+        rbuff += rcnt, fp->fptr += rcnt, *br += rcnt, btr -= rcnt) {
+        if (fp->fptr % SS(fs) == 0) {           /* On the sector boundary? */
+            csect = (UINT)(fp->fptr / SS(fs) & (fs->csize - 1));    /* Sector offset in the cluster */
+            if (csect == 0) {                   /* On the cluster boundary? */
+                if (fp->fptr == 0) {            /* On the top of the file? */
+                    clst = fp->obj.sclust;      /* Follow cluster chain from the origin */
+                } else {                        /* Middle or end of the file */
+#if _USE_FASTSEEK
+                    if (fp->cltbl) {
+                        clst = clmt_clust(fp, fp->fptr);    /* Get cluster# from the CLMT */
+                    } else
+#endif
+                    {
+                        clst = get_fat(&fp->obj, fp->clust);    /* Follow cluster chain on the FAT */
+                    }
+                }
+                if (clst < 2) ABORT(fs, FR_INT_ERR);
+                if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);
+                fp->clust = clst;               /* Update current cluster */
+            }
+            sect = clust2sect(fs, fp->clust);   /* Get current sector */
+            if (!sect) ABORT(fs, FR_INT_ERR);
+            sect += csect;
+            cc = btr / SS(fs);                  /* When remaining bytes >= sector size, */
+            if (cc) {                           /* Read maximum contiguous sectors directly */
+                if (csect + cc > fs->csize) {   /* Clip at cluster boundary */
+                    cc = fs->csize - csect;
+                }
+                if (disk_read(fs->drv, rbuff, sect, cc) != RES_OK) ABORT(fs, FR_DISK_ERR);
+#if !_FS_READONLY && _FS_MINIMIZE <= 2          /* Replace one of the read sectors with cached data if it contains a dirty sector */
+#if _FS_TINY
+                if (fs->wflag && fs->winsect - sect < cc) {
+                    mem_cpy(rbuff + ((fs->winsect - sect) * SS(fs)), fs->win, SS(fs));
+                }
+#else
+                if ((fp->flag & FA_DIRTY) && fp->sect - sect < cc) {
+                    mem_cpy(rbuff + ((fp->sect - sect) * SS(fs)), fp->buf, SS(fs));
+                }
+#endif
+#endif
+                rcnt = SS(fs) * cc;             /* Number of bytes transferred */
+                continue;
+            }
+#if !_FS_TINY
+            if (fp->sect != sect) {         /* Load data sector if not in cache */
+#if !_FS_READONLY
+                if (fp->flag & FA_DIRTY) {      /* Write-back dirty sector cache */
+                    if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);
+                    fp->flag &= (BYTE)~FA_DIRTY;
+                }
+#endif
+                if (disk_read(fs->drv, fp->buf, sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR); /* Fill sector cache */
+            }
+#endif
+            fp->sect = sect;
+        }
+        rcnt = SS(fs) - (UINT)fp->fptr % SS(fs);    /* Number of bytes left in the sector */
+        if (rcnt > btr) rcnt = btr;                 /* Clip it by btr if needed */
+#if _FS_TINY
+        if (move_window(fs, fp->sect) != FR_OK) ABORT(fs, FR_DISK_ERR); /* Move sector window */
+        mem_cpy(rbuff, fs->win + fp->fptr % SS(fs), rcnt);  /* Extract partial sector */
+#else
+        mem_cpy(rbuff, fp->buf + fp->fptr % SS(fs), rcnt);  /* Extract partial sector */
+#endif
+    }
+
+    LEAVE_FF(fs, FR_OK);
+}
+
+
+
+
+#if !_FS_READONLY
+/*-----------------------------------------------------------------------*/
+/* Write File                                                            */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_write (
+    FIL* fp,            /* Pointer to the file object */
+    const void* buff,   /* Pointer to the data to be written */
+    UINT btw,           /* Number of bytes to write */
+    UINT* bw            /* Pointer to number of bytes written */
+)
+{
+    FRESULT res;
+    FATFS *fs;
+    DWORD clst, sect;
+    UINT wcnt, cc, csect;
+    const BYTE *wbuff = (const BYTE*)buff;
+
+
+    *bw = 0;    /* Clear write byte counter */
+    res = validate(&fp->obj, &fs);          /* Check validity of the file object */
+    if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res);   /* Check validity */
+    if (!(fp->flag & FA_WRITE)) LEAVE_FF(fs, FR_DENIED);    /* Check access mode */
+
+    /* Check fptr wrap-around (file size cannot reach 4GiB on FATxx) */
+    if ((!_FS_EXFAT || fs->fs_type != FS_EXFAT) && (DWORD)(fp->fptr + btw) < (DWORD)fp->fptr) {
+        btw = (UINT)(0xFFFFFFFF - (DWORD)fp->fptr);
+    }
+
+    for ( ;  btw;                           /* Repeat until all data written */
+        wbuff += wcnt, fp->fptr += wcnt, fp->obj.objsize = (fp->fptr > fp->obj.objsize) ? fp->fptr : fp->obj.objsize, *bw += wcnt, btw -= wcnt) {
+        if (fp->fptr % SS(fs) == 0) {       /* On the sector boundary? */
+            csect = (UINT)(fp->fptr / SS(fs)) & (fs->csize - 1);    /* Sector offset in the cluster */
+            if (csect == 0) {               /* On the cluster boundary? */
+                if (fp->fptr == 0) {        /* On the top of the file? */
+                    clst = fp->obj.sclust;  /* Follow from the origin */
+                    if (clst == 0) {        /* If no cluster is allocated, */
+                        clst = create_chain(&fp->obj, 0);   /* create a new cluster chain */
+                    }
+                } else {                    /* On the middle or end of the file */
+#if _USE_FASTSEEK
+                    if (fp->cltbl) {
+                        clst = clmt_clust(fp, fp->fptr);    /* Get cluster# from the CLMT */
+                    } else
+#endif
+                    {
+                        clst = create_chain(&fp->obj, fp->clust);   /* Follow or stretch cluster chain on the FAT */
+                    }
+                }
+                if (clst == 0) break;       /* Could not allocate a new cluster (disk full) */
+                if (clst == 1) ABORT(fs, FR_INT_ERR);
+                if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);
+                fp->clust = clst;           /* Update current cluster */
+                if (fp->obj.sclust == 0) fp->obj.sclust = clst; /* Set start cluster if the first write */
+            }
+#if _FS_TINY
+            if (fs->winsect == fp->sect && sync_window(fs) != FR_OK) ABORT(fs, FR_DISK_ERR);    /* Write-back sector cache */
+#else
+            if (fp->flag & FA_DIRTY) {      /* Write-back sector cache */
+                if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);
+                fp->flag &= (BYTE)~FA_DIRTY;
+            }
+#endif
+            sect = clust2sect(fs, fp->clust);   /* Get current sector */
+            if (!sect) ABORT(fs, FR_INT_ERR);
+            sect += csect;
+            cc = btw / SS(fs);              /* When remaining bytes >= sector size, */
+            if (cc) {                       /* Write maximum contiguous sectors directly */
+                if (csect + cc > fs->csize) {   /* Clip at cluster boundary */
+                    cc = fs->csize - csect;
+                }
+                if (disk_write(fs->drv, wbuff, sect, cc) != RES_OK) ABORT(fs, FR_DISK_ERR);
+#if _FS_MINIMIZE <= 2
+#if _FS_TINY
+                if (fs->winsect - sect < cc) {  /* Refill sector cache if it gets invalidated by the direct write */
+                    mem_cpy(fs->win, wbuff + ((fs->winsect - sect) * SS(fs)), SS(fs));
+                    fs->wflag = 0;
+                }
+#else
+                if (fp->sect - sect < cc) { /* Refill sector cache if it gets invalidated by the direct write */
+                    mem_cpy(fp->buf, wbuff + ((fp->sect - sect) * SS(fs)), SS(fs));
+                    fp->flag &= (BYTE)~FA_DIRTY;
+                }
+#endif
+#endif
+                wcnt = SS(fs) * cc;     /* Number of bytes transferred */
+                continue;
+            }
+#if _FS_TINY
+            if (fp->fptr >= fp->obj.objsize) {  /* Avoid silly cache filling on the growing edge */
+                if (sync_window(fs) != FR_OK) ABORT(fs, FR_DISK_ERR);
+                fs->winsect = sect;
+            }
+#else
+            if (fp->sect != sect &&         /* Fill sector cache with file data */
+                fp->fptr < fp->obj.objsize &&
+                disk_read(fs->drv, fp->buf, sect, 1) != RES_OK) {
+                    ABORT(fs, FR_DISK_ERR);
+            }
+#endif
+            fp->sect = sect;
+        }
+        wcnt = SS(fs) - (UINT)fp->fptr % SS(fs);    /* Number of bytes left in the sector */
+        if (wcnt > btw) wcnt = btw;                 /* Clip it by btw if needed */
+#if _FS_TINY
+        if (move_window(fs, fp->sect) != FR_OK) ABORT(fs, FR_DISK_ERR); /* Move sector window */
+        mem_cpy(fs->win + fp->fptr % SS(fs), wbuff, wcnt);  /* Fit data to the sector */
+        fs->wflag = 1;
+#else
+        mem_cpy(fp->buf + fp->fptr % SS(fs), wbuff, wcnt);  /* Fit data to the sector */
+        fp->flag |= FA_DIRTY;
+#endif
+    }
+
+    fp->flag |= FA_MODIFIED;                /* Set file change flag */
+
+    LEAVE_FF(fs, FR_OK);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Synchronize the File                                                  */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_sync (
+    FIL* fp     /* Pointer to the file object */
+)
+{
+    FRESULT res;
+    FATFS *fs;
+    DWORD tm;
+    BYTE *dir;
+#if _FS_EXFAT
+    DEF_NAMBUF
+#endif
+
+
+    res = validate(&fp->obj, &fs);  /* Check validity of the file object */
+    if (res == FR_OK) {
+        if (fp->flag & FA_MODIFIED) {   /* Is there any change to the file? */
+#if !_FS_TINY
+            if (fp->flag & FA_DIRTY) {  /* Write-back cached data if needed */
+                if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) LEAVE_FF(fs, FR_DISK_ERR);
+                fp->flag &= (BYTE)~FA_DIRTY;
+            }
+#endif
+            /* Update the directory entry */
+            tm = GET_FATTIME();             /* Modified time */
+#if _FS_EXFAT
+            if (fs->fs_type == FS_EXFAT) {
+                res = fill_fat_chain(&fp->obj); /* Create FAT chain if needed */
+                if (res == FR_OK) {
+                    DIR dj;
+
+                    INIT_NAMBUF(fs);
+                    res = load_obj_dir(&dj, &fp->obj);  /* Load directory entry block */
+                    if (res == FR_OK) {
+                        fs->dirbuf[XDIR_Attr] |= AM_ARC;                /* Set archive bit */
+                        fs->dirbuf[XDIR_GenFlags] = fp->obj.stat | 1;   /* Update file allocation info */
+                        st_dword(fs->dirbuf + XDIR_FstClus, fp->obj.sclust);
+                        st_qword(fs->dirbuf + XDIR_FileSize, fp->obj.objsize);
+                        st_qword(fs->dirbuf + XDIR_ValidFileSize, fp->obj.objsize);
+                        st_dword(fs->dirbuf + XDIR_ModTime, tm);        /* Update modified time */
+                        fs->dirbuf[XDIR_ModTime10] = 0;
+                        st_dword(fs->dirbuf + XDIR_AccTime, 0);
+                        res = store_xdir(&dj);  /* Restore it to the directory */
+                        if (res == FR_OK) {
+                            res = sync_fs(fs);
+                            fp->flag &= (BYTE)~FA_MODIFIED;
+                        }
+                    }
+                    FREE_NAMBUF();
+                }
+            } else
+#endif
+            {
+                res = move_window(fs, fp->dir_sect);
+                if (res == FR_OK) {
+                    dir = fp->dir_ptr;
+                    dir[DIR_Attr] |= AM_ARC;                        /* Set archive bit */
+                    st_clust(fp->obj.fs, dir, fp->obj.sclust);      /* Update file allocation info  */
+                    st_dword(dir + DIR_FileSize, (DWORD)fp->obj.objsize);   /* Update file size */
+                    st_dword(dir + DIR_ModTime, tm);                /* Update modified time */
+                    st_word(dir + DIR_LstAccDate, 0);
+                    fs->wflag = 1;
+                    res = sync_fs(fs);                  /* Restore it to the directory */
+                    fp->flag &= (BYTE)~FA_MODIFIED;
+                }
+            }
+        }
+    }
+
+    LEAVE_FF(fs, res);
+}
+
+#endif /* !_FS_READONLY */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Close File                                                            */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_close (
+    FIL* fp     /* Pointer to the file object to be closed */
+)
+{
+    FRESULT res;
+    FATFS *fs;
+
+#if !_FS_READONLY
+    res = f_sync(fp);                   /* Flush cached data */
+    if (res == FR_OK)
+#endif
+    {
+        res = validate(&fp->obj, &fs);  /* Lock volume */
+        if (res == FR_OK) {
+#if _FS_LOCK != 0
+            res = dec_lock(fp->obj.lockid); /* Decrement file open counter */
+            if (res == FR_OK)
+#endif
+            {
+                fp->obj.fs = 0;         /* Invalidate file object */
+            }
+#if _FS_REENTRANT
+            unlock_fs(fs, FR_OK);       /* Unlock volume */
+#endif
+        }
+    }
+    return res;
+}
+
+
+
+
+#if _FS_RPATH >= 1
+/*-----------------------------------------------------------------------*/
+/* Change Current Directory or Current Drive, Get Current Directory      */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_chdir (
+    FATFS *fs,
+    const TCHAR* path   /* Pointer to the directory path */
+)
+{
+    FRESULT res;
+    DIR dj;
+    DEF_NAMBUF
+
+    /* Get logical drive */
+    res = find_volume(fs, 0);
+    if (res == FR_OK) {
+        dj.obj.fs = fs;
+        INIT_NAMBUF(fs);
+        res = follow_path(&dj, path);       /* Follow the path */
+        if (res == FR_OK) {                 /* Follow completed */
+            if (dj.fn[NSFLAG] & NS_NONAME) {
+                fs->cdir = dj.obj.sclust;   /* It is the start directory itself */
+#if _FS_EXFAT
+                if (fs->fs_type == FS_EXFAT) {
+                    fs->cdc_scl = dj.obj.c_scl;
+                    fs->cdc_size = dj.obj.c_size;
+                    fs->cdc_ofs = dj.obj.c_ofs;
+                }
+#endif
+            } else {
+                if (dj.obj.attr & AM_DIR) { /* It is a sub-directory */
+#if _FS_EXFAT
+                    if (fs->fs_type == FS_EXFAT) {
+                        fs->cdir = ld_dword(fs->dirbuf + XDIR_FstClus);     /* Sub-directory cluster */
+                        fs->cdc_scl = dj.obj.sclust;                        /* Save containing directory information */
+                        fs->cdc_size = ((DWORD)dj.obj.objsize & 0xFFFFFF00) | dj.obj.stat;
+                        fs->cdc_ofs = dj.blk_ofs;
+                    } else
+#endif
+                    {
+                        fs->cdir = ld_clust(fs, dj.dir);                    /* Sub-directory cluster */
+                    }
+                } else {
+                    res = FR_NO_PATH;       /* Reached but a file */
+                }
+            }
+        }
+        FREE_NAMBUF();
+        if (res == FR_NO_FILE) res = FR_NO_PATH;
+    }
+
+    LEAVE_FF(fs, res);
+}
+
+
+#if _FS_RPATH >= 2
+FRESULT f_getcwd (
+    FATFS *fs,
+    TCHAR* buff,    /* Pointer to the directory path */
+    UINT len        /* Size of path */
+)
+{
+    FRESULT res;
+    DIR dj;
+    UINT i, n;
+    DWORD ccl;
+    TCHAR *tp;
+    FILINFO fno;
+    DEF_NAMBUF
+
+
+    *buff = 0;
+    /* Get logical drive */
+    res = find_volume(fs, 0);   /* Get current volume */
+    if (res == FR_OK) {
+        dj.obj.fs = fs;
+        INIT_NAMBUF(fs);
+        i = len;            /* Bottom of buffer (directory stack base) */
+        if (!_FS_EXFAT || fs->fs_type != FS_EXFAT) {    /* (Cannot do getcwd on exFAT and returns root path) */
+            dj.obj.sclust = fs->cdir;               /* Start to follow upper directory from current directory */
+            while ((ccl = dj.obj.sclust) != 0) {    /* Repeat while current directory is a sub-directory */
+                res = dir_sdi(&dj, 1 * SZDIRE); /* Get parent directory */
+                if (res != FR_OK) break;
+                res = move_window(fs, dj.sect);
+                if (res != FR_OK) break;
+                dj.obj.sclust = ld_clust(fs, dj.dir);   /* Goto parent directory */
+                res = dir_sdi(&dj, 0);
+                if (res != FR_OK) break;
+                do {                            /* Find the entry links to the child directory */
+                    res = dir_read(&dj, 0);
+                    if (res != FR_OK) break;
+                    if (ccl == ld_clust(fs, dj.dir)) break; /* Found the entry */
+                    res = dir_next(&dj, 0);
+                } while (res == FR_OK);
+                if (res == FR_NO_FILE) res = FR_INT_ERR;/* It cannot be 'not found'. */
+                if (res != FR_OK) break;
+                get_fileinfo(&dj, &fno);        /* Get the directory name and push it to the buffer */
+                for (n = 0; fno.fname[n]; n++) ;
+                if (i < n + 3) {
+                    res = FR_NOT_ENOUGH_CORE; break;
+                }
+                while (n) buff[--i] = fno.fname[--n];
+                buff[--i] = '/';
+            }
+        }
+        tp = buff;
+        if (res == FR_OK) {
+            if (i == len) {                 /* Root-directory */
+                *tp++ = '/';
+            } else {                        /* Sub-directroy */
+                do      /* Add stacked path str */
+                    *tp++ = buff[i++];
+                while (i < len);
+            }
+        }
+        *tp = 0;
+        FREE_NAMBUF();
+    }
+
+    LEAVE_FF(fs, res);
+}
+
+#endif /* _FS_RPATH >= 2 */
+#endif /* _FS_RPATH >= 1 */
+
+
+
+#if _FS_MINIMIZE <= 2
+/*-----------------------------------------------------------------------*/
+/* Seek File R/W Pointer                                                 */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_lseek (
+    FIL* fp,        /* Pointer to the file object */
+    FSIZE_t ofs     /* File pointer from top of file */
+)
+{
+    FRESULT res;
+    FATFS *fs;
+    DWORD clst, bcs, nsect;
+    FSIZE_t ifptr;
+#if _USE_FASTSEEK
+    DWORD cl, pcl, ncl, tcl, dsc, tlen, ulen, *tbl;
+#endif
+
+    res = validate(&fp->obj, &fs);      /* Check validity of the file object */
+    if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res);   /* Check validity */
+#if _USE_FASTSEEK
+    if (fp->cltbl) {    /* Fast seek */
+        if (ofs == CREATE_LINKMAP) {    /* Create CLMT */
+            tbl = fp->cltbl;
+            tlen = *tbl++; ulen = 2;    /* Given table size and required table size */
+            cl = fp->obj.sclust;        /* Origin of the chain */
+            if (cl) {
+                do {
+                    /* Get a fragment */
+                    tcl = cl; ncl = 0; ulen += 2;   /* Top, length and used items */
+                    do {
+                        pcl = cl; ncl++;
+                        cl = get_fat(&fp->obj, cl);
+                        if (cl <= 1) ABORT(fs, FR_INT_ERR);
+                        if (cl == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);
+                    } while (cl == pcl + 1);
+                    if (ulen <= tlen) {     /* Store the length and top of the fragment */
+                        *tbl++ = ncl; *tbl++ = tcl;
+                    }
+                } while (cl < fs->n_fatent);    /* Repeat until end of chain */
+            }
+            *fp->cltbl = ulen;  /* Number of items used */
+            if (ulen <= tlen) {
+                *tbl = 0;       /* Terminate table */
+            } else {
+                res = FR_NOT_ENOUGH_CORE;   /* Given table size is smaller than required */
+            }
+        } else {                        /* Fast seek */
+            if (ofs > fp->obj.objsize) ofs = fp->obj.objsize;   /* Clip offset at the file size */
+            fp->fptr = ofs;             /* Set file pointer */
+            if (ofs) {
+                fp->clust = clmt_clust(fp, ofs - 1);
+                dsc = clust2sect(fs, fp->clust);
+                if (!dsc) ABORT(fs, FR_INT_ERR);
+                dsc += (DWORD)((ofs - 1) / SS(fs)) & (fs->csize - 1);
+                if (fp->fptr % SS(fs) && dsc != fp->sect) { /* Refill sector cache if needed */
+#if !_FS_TINY
+#if !_FS_READONLY
+                    if (fp->flag & FA_DIRTY) {      /* Write-back dirty sector cache */
+                        if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);
+                        fp->flag &= (BYTE)~FA_DIRTY;
+                    }
+#endif
+                    if (disk_read(fs->drv, fp->buf, dsc, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);  /* Load current sector */
+#endif
+                    fp->sect = dsc;
+                }
+            }
+        }
+    } else
+#endif
+
+    /* Normal Seek */
+    {
+#if _FS_EXFAT
+        if (fs->fs_type != FS_EXFAT && ofs >= 0x100000000) ofs = 0xFFFFFFFF;    /* Clip at 4GiB-1 if at FATxx */
+#endif
+        if (ofs > fp->obj.objsize && (_FS_READONLY || !(fp->flag & FA_WRITE))) {    /* In read-only mode, clip offset with the file size */
+            ofs = fp->obj.objsize;
+        }
+        ifptr = fp->fptr;
+        fp->fptr = nsect = 0;
+        if (ofs) {
+            bcs = (DWORD)fs->csize * SS(fs);    /* Cluster size (byte) */
+            if (ifptr > 0 &&
+                (ofs - 1) / bcs >= (ifptr - 1) / bcs) { /* When seek to same or following cluster, */
+                fp->fptr = (ifptr - 1) & ~(FSIZE_t)(bcs - 1);   /* start from the current cluster */
+                ofs -= fp->fptr;
+                clst = fp->clust;
+            } else {                                    /* When seek to back cluster, */
+                clst = fp->obj.sclust;                  /* start from the first cluster */
+#if !_FS_READONLY
+                if (clst == 0) {                        /* If no cluster chain, create a new chain */
+                    clst = create_chain(&fp->obj, 0);
+                    if (clst == 1) ABORT(fs, FR_INT_ERR);
+                    if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);
+                    fp->obj.sclust = clst;
+                }
+#endif
+                fp->clust = clst;
+            }
+            if (clst != 0) {
+                while (ofs > bcs) {                     /* Cluster following loop */
+                    ofs -= bcs; fp->fptr += bcs;
+#if !_FS_READONLY
+                    if (fp->flag & FA_WRITE) {          /* Check if in write mode or not */
+                        if (_FS_EXFAT && fp->fptr > fp->obj.objsize) {  /* No FAT chain object needs correct objsize to generate FAT value */
+                            fp->obj.objsize = fp->fptr;
+                            fp->flag |= FA_MODIFIED;
+                        }
+                        clst = create_chain(&fp->obj, clst);    /* Follow chain with forceed stretch */
+                        if (clst == 0) {                /* Clip file size in case of disk full */
+                            ofs = 0; break;
+                        }
+                    } else
+#endif
+                    {
+                        clst = get_fat(&fp->obj, clst); /* Follow cluster chain if not in write mode */
+                    }
+                    if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);
+                    if (clst <= 1 || clst >= fs->n_fatent) ABORT(fs, FR_INT_ERR);
+                    fp->clust = clst;
+                }
+                fp->fptr += ofs;
+                if (ofs % SS(fs)) {
+                    nsect = clust2sect(fs, clst);   /* Current sector */
+                    if (!nsect) ABORT(fs, FR_INT_ERR);
+                    nsect += (DWORD)(ofs / SS(fs));
+                }
+            }
+        }
+        if (!_FS_READONLY && fp->fptr > fp->obj.objsize) {      /* Set file change flag if the file size is extended */
+            fp->obj.objsize = fp->fptr;
+            fp->flag |= FA_MODIFIED;
+        }
+        if (fp->fptr % SS(fs) && nsect != fp->sect) {   /* Fill sector cache if needed */
+#if !_FS_TINY
+#if !_FS_READONLY
+            if (fp->flag & FA_DIRTY) {          /* Write-back dirty sector cache */
+                if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);
+                fp->flag &= (BYTE)~FA_DIRTY;
+            }
+#endif
+            if (disk_read(fs->drv, fp->buf, nsect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);    /* Fill sector cache */
+#endif
+            fp->sect = nsect;
+        }
+    }
+
+    LEAVE_FF(fs, res);
+}
+
+
+
+#if _FS_MINIMIZE <= 1
+/*-----------------------------------------------------------------------*/
+/* Create a Directory Object                                             */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_opendir (
+    FATFS *fs,
+    DIR* dp,            /* Pointer to directory object to create */
+    const TCHAR* path   /* Pointer to the directory path */
+)
+{
+    FRESULT res;
+    _FDID *obj;
+    DEF_NAMBUF
+
+
+    if (!dp) return FR_INVALID_OBJECT;
+
+    /* Get logical drive */
+    obj = &dp->obj;
+    res = find_volume(fs, 0);
+    if (res == FR_OK) {
+        obj->fs = fs;
+        INIT_NAMBUF(fs);
+        res = follow_path(dp, path);            /* Follow the path to the directory */
+        if (res == FR_OK) {                     /* Follow completed */
+            if (!(dp->fn[NSFLAG] & NS_NONAME)) {    /* It is not the origin directory itself */
+                if (obj->attr & AM_DIR) {       /* This object is a sub-directory */
+#if _FS_EXFAT
+                    if (fs->fs_type == FS_EXFAT) {
+                        obj->c_scl = obj->sclust;   /* Save containing directory inforamation */
+                        obj->c_size = ((DWORD)obj->objsize & 0xFFFFFF00) | obj->stat;
+                        obj->c_ofs = dp->blk_ofs;
+                        obj->sclust = ld_dword(fs->dirbuf + XDIR_FstClus);  /* Get object location and status */
+                        obj->objsize = ld_qword(fs->dirbuf + XDIR_FileSize);
+                        obj->stat = fs->dirbuf[XDIR_GenFlags] & 2;
+                    } else
+#endif
+                    {
+                        obj->sclust = ld_clust(fs, dp->dir);    /* Get object location */
+                    }
+                } else {                        /* This object is a file */
+                    res = FR_NO_PATH;
+                }
+            }
+            if (res == FR_OK) {
+                obj->id = fs->id;
+                res = dir_sdi(dp, 0);           /* Rewind directory */
+#if _FS_LOCK != 0
+                if (res == FR_OK) {
+                    if (obj->sclust) {
+                        obj->lockid = inc_lock(dp, 0);  /* Lock the sub directory */
+                        if (!obj->lockid) res = FR_TOO_MANY_OPEN_FILES;
+                    } else {
+                        obj->lockid = 0;    /* Root directory need not to be locked */
+                    }
+                }
+#endif
+            }
+        }
+        FREE_NAMBUF();
+        if (res == FR_NO_FILE) res = FR_NO_PATH;
+    }
+    if (res != FR_OK) obj->fs = 0;      /* Invalidate the directory object if function faild */
+
+    LEAVE_FF(fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Close Directory                                                       */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_closedir (
+    DIR *dp     /* Pointer to the directory object to be closed */
+)
+{
+    FRESULT res;
+    FATFS *fs;
+
+
+    res = validate(&dp->obj, &fs);          /* Check validity of the file object */
+    if (res == FR_OK) {
+#if _FS_LOCK != 0
+        if (dp->obj.lockid) {               /* Decrement sub-directory open counter */
+            res = dec_lock(dp->obj.lockid);
+        }
+        if (res == FR_OK)
+#endif
+        {
+            dp->obj.fs = 0;         /* Invalidate directory object */
+        }
+#if _FS_REENTRANT
+        unlock_fs(fs, FR_OK);       /* Unlock volume */
+#endif
+    }
+    return res;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Read Directory Entries in Sequence                                    */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_readdir (
+    DIR* dp,            /* Pointer to the open directory object */
+    FILINFO* fno        /* Pointer to file information to return */
+)
+{
+    FRESULT res;
+    FATFS *fs;
+    DEF_NAMBUF
+
+
+    res = validate(&dp->obj, &fs);  /* Check validity of the directory object */
+    if (res == FR_OK) {
+        if (!fno) {
+            res = dir_sdi(dp, 0);           /* Rewind the directory object */
+        } else {
+            INIT_NAMBUF(fs);
+            res = dir_read(dp, 0);          /* Read an item */
+            if (res == FR_NO_FILE) res = FR_OK; /* Ignore end of directory */
+            if (res == FR_OK) {             /* A valid entry is found */
+                get_fileinfo(dp, fno);      /* Get the object information */
+                res = dir_next(dp, 0);      /* Increment index for next */
+                if (res == FR_NO_FILE) res = FR_OK; /* Ignore end of directory now */
+            }
+            FREE_NAMBUF();
+        }
+    }
+    LEAVE_FF(fs, res);
+}
+
+
+
+#if _USE_FIND
+/*-----------------------------------------------------------------------*/
+/* Find Next File                                                        */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_findnext (
+    DIR* dp,        /* Pointer to the open directory object */
+    FILINFO* fno    /* Pointer to the file information structure */
+)
+{
+    FRESULT res;
+
+
+    for (;;) {
+        res = f_readdir(dp, fno);       /* Get a directory item */
+        if (res != FR_OK || !fno || !fno->fname[0]) break;  /* Terminate if any error or end of directory */
+        if (pattern_matching(dp->pat, fno->fname, 0, 0)) break;     /* Test for the file name */
+#if _USE_LFN != 0 && _USE_FIND == 2
+        if (pattern_matching(dp->pat, fno->altname, 0, 0)) break;   /* Test for alternative name if exist */
+#endif
+    }
+    return res;
+}
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Find First File                                                       */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_findfirst (
+    DIR* dp,                /* Pointer to the blank directory object */
+    FILINFO* fno,           /* Pointer to the file information structure */
+    const TCHAR* path,      /* Pointer to the directory to open */
+    const TCHAR* pattern    /* Pointer to the matching pattern */
+)
+{
+    FRESULT res;
+
+
+    dp->pat = pattern;      /* Save pointer to pattern string */
+    res = f_opendir(dp, path);      /* Open the target directory */
+    if (res == FR_OK) {
+        res = f_findnext(dp, fno);  /* Find the first item */
+    }
+    return res;
+}
+
+#endif  /* _USE_FIND */
+
+
+
+#if _FS_MINIMIZE == 0
+/*-----------------------------------------------------------------------*/
+/* Get File Status                                                       */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_stat (
+    FATFS *fs,
+    const TCHAR* path,  /* Pointer to the file path */
+    FILINFO* fno        /* Pointer to file information to return */
+)
+{
+    FRESULT res;
+    DIR dj;
+    DEF_NAMBUF
+
+
+    /* Get logical drive */
+    res = find_volume(fs, 0);
+    dj.obj.fs = fs;
+    if (res == FR_OK) {
+        INIT_NAMBUF(dj.obj.fs);
+        res = follow_path(&dj, path);   /* Follow the file path */
+        if (res == FR_OK) {             /* Follow completed */
+            if (dj.fn[NSFLAG] & NS_NONAME) {    /* It is origin directory */
+                res = FR_INVALID_NAME;
+            } else {                            /* Found an object */
+                if (fno) get_fileinfo(&dj, fno);
+            }
+        }
+        FREE_NAMBUF();
+    }
+
+    LEAVE_FF(dj.obj.fs, res);
+}
+
+
+
+#if !_FS_READONLY
+/*-----------------------------------------------------------------------*/
+/* Get Number of Free Clusters                                           */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_getfree (
+    FATFS *fs,
+    DWORD* nclst        /* Pointer to a variable to return number of free clusters */
+)
+{
+    FRESULT res;
+    DWORD nfree, clst, sect, stat;
+    UINT i;
+    BYTE *p;
+    _FDID obj;
+
+
+    /* Get logical drive */
+    res = find_volume(fs, 0);
+    if (res == FR_OK) {
+        /* If free_clst is valid, return it without full cluster scan */
+        if (fs->free_clst <= fs->n_fatent - 2) {
+            *nclst = fs->free_clst;
+        } else {
+            /* Get number of free clusters */
+            nfree = 0;
+            if (fs->fs_type == FS_FAT12) {  /* FAT12: Sector unalighed FAT entries */
+                clst = 2; obj.fs = fs;
+                do {
+                    stat = get_fat(&obj, clst);
+                    if (stat == 0xFFFFFFFF) { res = FR_DISK_ERR; break; }
+                    if (stat == 1) { res = FR_INT_ERR; break; }
+                    if (stat == 0) nfree++;
+                } while (++clst < fs->n_fatent);
+            } else {
+#if _FS_EXFAT
+                if (fs->fs_type == FS_EXFAT) {  /* exFAT: Scan bitmap table */
+                    BYTE bm;
+                    UINT b;
+
+                    clst = fs->n_fatent - 2;
+                    sect = fs->database;
+                    i = 0;
+                    do {
+                        if (i == 0 && (res = move_window(fs, sect++)) != FR_OK) break;
+                        for (b = 8, bm = fs->win[i]; b && clst; b--, clst--) {
+                            if (!(bm & 1)) nfree++;
+                            bm >>= 1;
+                        }
+                        i = (i + 1) % SS(fs);
+                    } while (clst);
+                } else
+#endif
+                {   /* FAT16/32: Sector alighed FAT entries */
+                    clst = fs->n_fatent; sect = fs->fatbase;
+                    i = 0; p = 0;
+                    do {
+                        if (i == 0) {
+                            res = move_window(fs, sect++);
+                            if (res != FR_OK) break;
+                            p = fs->win;
+                            i = SS(fs);
+                        }
+                        if (fs->fs_type == FS_FAT16) {
+                            if (ld_word(p) == 0) nfree++;
+                            p += 2; i -= 2;
+                        } else {
+                            if ((ld_dword(p) & 0x0FFFFFFF) == 0) nfree++;
+                            p += 4; i -= 4;
+                        }
+                    } while (--clst);
+                }
+            }
+            *nclst = nfree;         /* Return the free clusters */
+            fs->free_clst = nfree;  /* Now free_clst is valid */
+            fs->fsi_flag |= 1;      /* FSInfo is to be updated */
+        }
+    }
+
+    LEAVE_FF(fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Truncate File                                                         */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_truncate (
+    FIL* fp     /* Pointer to the file object */
+)
+{
+    FRESULT res;
+    FATFS *fs;
+    DWORD ncl;
+
+
+    res = validate(&fp->obj, &fs);  /* Check validity of the file object */
+    if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res);
+    if (!(fp->flag & FA_WRITE)) LEAVE_FF(fs, FR_DENIED);    /* Check access mode */
+
+    if (fp->obj.objsize > fp->fptr) {
+        if (fp->fptr == 0) {    /* When set file size to zero, remove entire cluster chain */
+            res = remove_chain(&fp->obj, fp->obj.sclust, 0);
+            fp->obj.sclust = 0;
+        } else {                /* When truncate a part of the file, remove remaining clusters */
+            ncl = get_fat(&fp->obj, fp->clust);
+            res = FR_OK;
+            if (ncl == 0xFFFFFFFF) res = FR_DISK_ERR;
+            if (ncl == 1) res = FR_INT_ERR;
+            if (res == FR_OK && ncl < fs->n_fatent) {
+                res = remove_chain(&fp->obj, ncl, fp->clust);
+            }
+        }
+        fp->obj.objsize = fp->fptr; /* Set file size to current R/W point */
+        fp->flag |= FA_MODIFIED;
+#if !_FS_TINY
+        if (res == FR_OK && (fp->flag & FA_DIRTY)) {
+            if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) {
+                res = FR_DISK_ERR;
+            } else {
+                fp->flag &= (BYTE)~FA_DIRTY;
+            }
+        }
+#endif
+        if (res != FR_OK) ABORT(fs, res);
+    }
+
+    LEAVE_FF(fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Delete a File/Directory                                               */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_unlink (
+    FATFS *fs,
+    const TCHAR* path       /* Pointer to the file or directory path */
+)
+{
+    FRESULT res;
+    DIR dj, sdj;
+    DWORD dclst = 0;
+#if _FS_EXFAT
+    _FDID obj;
+#endif
+    DEF_NAMBUF
+
+
+    /* Get logical drive */
+    res = find_volume(fs, FA_WRITE);
+    dj.obj.fs = fs;
+    if (res == FR_OK) {
+        INIT_NAMBUF(fs);
+        res = follow_path(&dj, path);       /* Follow the file path */
+        if (_FS_RPATH && res == FR_OK && (dj.fn[NSFLAG] & NS_DOT)) {
+            res = FR_INVALID_NAME;          /* Cannot remove dot entry */
+        }
+#if _FS_LOCK != 0
+        if (res == FR_OK) res = chk_lock(&dj, 2);   /* Check if it is an open object */
+#endif
+        if (res == FR_OK) {                 /* The object is accessible */
+            if (dj.fn[NSFLAG] & NS_NONAME) {
+                res = FR_INVALID_NAME;      /* Cannot remove the origin directory */
+            } else {
+                if (dj.obj.attr & AM_RDO) {
+                    res = FR_DENIED;        /* Cannot remove R/O object */
+                }
+            }
+            if (res == FR_OK) {
+#if _FS_EXFAT
+                obj.fs = fs;
+                if (fs->fs_type == FS_EXFAT) {
+                    obj.sclust = dclst = ld_dword(fs->dirbuf + XDIR_FstClus);
+                    obj.objsize = ld_qword(fs->dirbuf + XDIR_FileSize);
+                    obj.stat = fs->dirbuf[XDIR_GenFlags] & 2;
+                } else
+#endif
+                {
+                    dclst = ld_clust(fs, dj.dir);
+                }
+                if (dj.obj.attr & AM_DIR) {         /* Is it a sub-directory ? */
+#if _FS_RPATH != 0
+                    if (dclst == fs->cdir) {                /* Is it the current directory? */
+                        res = FR_DENIED;
+                    } else
+#endif
+                    {
+                        sdj.obj.fs = fs;                        /* Open the sub-directory */
+                        sdj.obj.sclust = dclst;
+#if _FS_EXFAT
+                        if (fs->fs_type == FS_EXFAT) {
+                            sdj.obj.objsize = obj.objsize;
+                            sdj.obj.stat = obj.stat;
+                        }
+#endif
+                        res = dir_sdi(&sdj, 0);
+                        if (res == FR_OK) {
+                            res = dir_read(&sdj, 0);            /* Read an item */
+                            if (res == FR_OK) res = FR_DENIED;  /* Not empty? */
+                            if (res == FR_NO_FILE) res = FR_OK; /* Empty? */
+                        }
+                    }
+                }
+            }
+            if (res == FR_OK) {
+                res = dir_remove(&dj);          /* Remove the directory entry */
+                if (res == FR_OK && dclst) {    /* Remove the cluster chain if exist */
+#if _FS_EXFAT
+                    res = remove_chain(&obj, dclst, 0);
+#else
+                    res = remove_chain(&dj.obj, dclst, 0);
+#endif
+                }
+                if (res == FR_OK) res = sync_fs(fs);
+            }
+        }
+        FREE_NAMBUF();
+    }
+
+    LEAVE_FF(fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Create a Directory                                                    */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_mkdir (
+    FATFS *fs,
+    const TCHAR* path       /* Pointer to the directory path */
+)
+{
+    FRESULT res;
+    DIR dj;
+    BYTE *dir;
+    UINT n;
+    DWORD dsc, dcl, pcl, tm;
+    DEF_NAMBUF
+
+
+    /* Get logical drive */
+    res = find_volume(fs, FA_WRITE);
+    dj.obj.fs = fs;
+    if (res == FR_OK) {
+        INIT_NAMBUF(fs);
+        res = follow_path(&dj, path);           /* Follow the file path */
+        if (res == FR_OK) res = FR_EXIST;       /* Any object with same name is already existing */
+        if (_FS_RPATH && res == FR_NO_FILE && (dj.fn[NSFLAG] & NS_DOT)) {
+            res = FR_INVALID_NAME;
+        }
+        if (res == FR_NO_FILE) {                /* Can create a new directory */
+            dcl = create_chain(&dj.obj, 0);     /* Allocate a cluster for the new directory table */
+            dj.obj.objsize = (DWORD)fs->csize * SS(fs);
+            res = FR_OK;
+            if (dcl == 0) res = FR_DENIED;      /* No space to allocate a new cluster */
+            if (dcl == 1) res = FR_INT_ERR;
+            if (dcl == 0xFFFFFFFF) res = FR_DISK_ERR;
+            if (res == FR_OK) res = sync_window(fs);    /* Flush FAT */
+            tm = GET_FATTIME();
+            if (res == FR_OK) {                 /* Initialize the new directory table */
+                dsc = clust2sect(fs, dcl);
+                dir = fs->win;
+                mem_set(dir, 0, SS(fs));
+                if (!_FS_EXFAT || fs->fs_type != FS_EXFAT) {
+                    mem_set(dir + DIR_Name, ' ', 11);   /* Create "." entry */
+                    dir[DIR_Name] = '.';
+                    dir[DIR_Attr] = AM_DIR;
+                    st_dword(dir + DIR_ModTime, tm);
+                    st_clust(fs, dir, dcl);
+                    mem_cpy(dir + SZDIRE, dir, SZDIRE);     /* Create ".." entry */
+                    dir[SZDIRE + 1] = '.'; pcl = dj.obj.sclust;
+                    if (fs->fs_type == FS_FAT32 && pcl == fs->dirbase) pcl = 0;
+                    st_clust(fs, dir + SZDIRE, pcl);
+                }
+                for (n = fs->csize; n; n--) {   /* Write dot entries and clear following sectors */
+                    fs->winsect = dsc++;
+                    fs->wflag = 1;
+                    res = sync_window(fs);
+                    if (res != FR_OK) break;
+                    mem_set(dir, 0, SS(fs));
+                }
+            }
+            if (res == FR_OK) res = dir_register(&dj);  /* Register the object to the directoy */
+            if (res == FR_OK) {
+#if _FS_EXFAT
+                if (fs->fs_type == FS_EXFAT) {  /* Initialize directory entry block */
+                    st_dword(fs->dirbuf + XDIR_ModTime, tm);    /* Created time */
+                    st_dword(fs->dirbuf + XDIR_FstClus, dcl);   /* Table start cluster */
+                    st_dword(fs->dirbuf + XDIR_FileSize, (DWORD)dj.obj.objsize);    /* File size needs to be valid */
+                    st_dword(fs->dirbuf + XDIR_ValidFileSize, (DWORD)dj.obj.objsize);
+                    fs->dirbuf[XDIR_GenFlags] = 3;              /* Initialize the object flag (contiguous) */
+                    fs->dirbuf[XDIR_Attr] = AM_DIR;             /* Attribute */
+                    res = store_xdir(&dj);
+                } else
+#endif
+                {
+                    dir = dj.dir;
+                    st_dword(dir + DIR_ModTime, tm);    /* Created time */
+                    st_clust(fs, dir, dcl);             /* Table start cluster */
+                    dir[DIR_Attr] = AM_DIR;             /* Attribute */
+                    fs->wflag = 1;
+                }
+                if (res == FR_OK) res = sync_fs(fs);
+            } else {
+                remove_chain(&dj.obj, dcl, 0);      /* Could not register, remove cluster chain */
+            }
+        }
+        FREE_NAMBUF();
+    }
+
+    LEAVE_FF(fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Rename a File/Directory                                               */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_rename (
+    FATFS *fs,
+    const TCHAR* path_old,  /* Pointer to the object name to be renamed */
+    const TCHAR* path_new   /* Pointer to the new name */
+)
+{
+    FRESULT res;
+    DIR djo, djn;
+    BYTE buf[_FS_EXFAT ? SZDIRE * 2 : 24], *dir;
+    DWORD dw;
+    DEF_NAMBUF
+
+
+    res = find_volume(fs, FA_WRITE);
+    if (res == FR_OK) {
+        djo.obj.fs = fs;
+        INIT_NAMBUF(fs);
+        res = follow_path(&djo, path_old);      /* Check old object */
+        if (res == FR_OK && (djo.fn[NSFLAG] & (NS_DOT | NS_NONAME))) res = FR_INVALID_NAME; /* Check validity of name */
+#if _FS_LOCK != 0
+        if (res == FR_OK) res = chk_lock(&djo, 2);
+#endif
+        if (res == FR_OK) {                     /* Object to be renamed is found */
+#if _FS_EXFAT
+            if (fs->fs_type == FS_EXFAT) {  /* At exFAT */
+                BYTE nf, nn;
+                WORD nh;
+
+                mem_cpy(buf, fs->dirbuf, SZDIRE * 2);   /* Save 85+C0 entry of old object */
+                mem_cpy(&djn, &djo, sizeof djo);
+                res = follow_path(&djn, path_new);      /* Make sure if new object name is not in use */
+                if (res == FR_OK) {                     /* Is new name already in use by any other object? */
+                    res = (djn.obj.sclust == djo.obj.sclust && djn.dptr == djo.dptr) ? FR_NO_FILE : FR_EXIST;
+                }
+                if (res == FR_NO_FILE) {                /* It is a valid path and no name collision */
+                    res = dir_register(&djn);           /* Register the new entry */
+                    if (res == FR_OK) {
+                        nf = fs->dirbuf[XDIR_NumSec]; nn = fs->dirbuf[XDIR_NumName];
+                        nh = ld_word(fs->dirbuf + XDIR_NameHash);
+                        mem_cpy(fs->dirbuf, buf, SZDIRE * 2);
+                        fs->dirbuf[XDIR_NumSec] = nf; fs->dirbuf[XDIR_NumName] = nn;
+                        st_word(fs->dirbuf + XDIR_NameHash, nh);
+/* Start of critical section where any interruption can cause a cross-link */
+                        res = store_xdir(&djn);
+                    }
+                }
+            } else
+#endif
+            {   /* At FAT12/FAT16/FAT32 */
+                mem_cpy(buf, djo.dir + DIR_Attr, 21);   /* Save information about the object except name */
+                mem_cpy(&djn, &djo, sizeof (DIR));      /* Duplicate the directory object */
+                res = follow_path(&djn, path_new);      /* Make sure if new object name is not in use */
+                if (res == FR_OK) {                     /* Is new name already in use by any other object? */
+                    res = (djn.obj.sclust == djo.obj.sclust && djn.dptr == djo.dptr) ? FR_NO_FILE : FR_EXIST;
+                }
+                if (res == FR_NO_FILE) {                /* It is a valid path and no name collision */
+                    res = dir_register(&djn);           /* Register the new entry */
+                    if (res == FR_OK) {
+                        dir = djn.dir;                  /* Copy information about object except name */
+                        mem_cpy(dir + 13, buf + 2, 19);
+                        dir[DIR_Attr] = buf[0] | AM_ARC;
+                        fs->wflag = 1;
+                        if ((dir[DIR_Attr] & AM_DIR) && djo.obj.sclust != djn.obj.sclust) { /* Update .. entry in the sub-directory if needed */
+                            dw = clust2sect(fs, ld_clust(fs, dir));
+                            if (!dw) {
+                                res = FR_INT_ERR;
+                            } else {
+/* Start of critical section where any interruption can cause a cross-link */
+                                res = move_window(fs, dw);
+                                dir = fs->win + SZDIRE * 1; /* Ptr to .. entry */
+                                if (res == FR_OK && dir[1] == '.') {
+                                    st_clust(fs, dir, djn.obj.sclust);
+                                    fs->wflag = 1;
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            if (res == FR_OK) {
+                res = dir_remove(&djo);     /* Remove old entry */
+                if (res == FR_OK) {
+                    res = sync_fs(fs);
+                }
+            }
+/* End of critical section */
+        }
+        FREE_NAMBUF();
+    }
+
+    LEAVE_FF(fs, res);
+}
+
+#endif /* !_FS_READONLY */
+#endif /* _FS_MINIMIZE == 0 */
+#endif /* _FS_MINIMIZE <= 1 */
+#endif /* _FS_MINIMIZE <= 2 */
+
+
+
+#if _USE_CHMOD && !_FS_READONLY
+/*-----------------------------------------------------------------------*/
+/* Change Attribute                                                      */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_chmod (
+    FATFS *fs,
+    const TCHAR* path,  /* Pointer to the file path */
+    BYTE attr,          /* Attribute bits */
+    BYTE mask           /* Attribute mask to change */
+)
+{
+    FRESULT res;
+    DIR dj;
+    DEF_NAMBUF
+
+
+    res = find_volume(fs, FA_WRITE);    /* Get logical drive */
+    dj.obj.fs = fs;
+    if (res == FR_OK) {
+        INIT_NAMBUF(fs);
+        res = follow_path(&dj, path);   /* Follow the file path */
+        if (res == FR_OK && (dj.fn[NSFLAG] & (NS_DOT | NS_NONAME))) res = FR_INVALID_NAME;  /* Check object validity */
+        if (res == FR_OK) {
+            mask &= AM_RDO|AM_HID|AM_SYS|AM_ARC;    /* Valid attribute mask */
+#if _FS_EXFAT
+            if (fs->fs_type == FS_EXFAT) {
+                fs->dirbuf[XDIR_Attr] = (attr & mask) | (fs->dirbuf[XDIR_Attr] & (BYTE)~mask);  /* Apply attribute change */
+                res = store_xdir(&dj);
+            } else
+#endif
+            {
+                dj.dir[DIR_Attr] = (attr & mask) | (dj.dir[DIR_Attr] & (BYTE)~mask);    /* Apply attribute change */
+                fs->wflag = 1;
+            }
+            if (res == FR_OK) res = sync_fs(fs);
+        }
+        FREE_NAMBUF();
+    }
+
+    LEAVE_FF(fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Change Timestamp                                                      */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_utime (
+    FATFS *fs,
+    const TCHAR* path,  /* Pointer to the file/directory name */
+    const FILINFO* fno  /* Pointer to the time stamp to be set */
+)
+{
+    FRESULT res;
+    DIR dj;
+    DEF_NAMBUF
+
+
+    res = find_volume(fs, FA_WRITE);    /* Get logical drive */
+    dj.obj.fs = fs;
+    if (res == FR_OK) {
+        INIT_NAMBUF(fs);
+        res = follow_path(&dj, path);   /* Follow the file path */
+        if (res == FR_OK && (dj.fn[NSFLAG] & (NS_DOT | NS_NONAME))) res = FR_INVALID_NAME;  /* Check object validity */
+        if (res == FR_OK) {
+#if _FS_EXFAT
+            if (fs->fs_type == FS_EXFAT) {
+                st_dword(fs->dirbuf + XDIR_ModTime, (DWORD)fno->fdate << 16 | fno->ftime);
+                res = store_xdir(&dj);
+            } else
+#endif
+            {
+                st_dword(dj.dir + DIR_ModTime, (DWORD)fno->fdate << 16 | fno->ftime);
+                fs->wflag = 1;
+            }
+            if (res == FR_OK) res = sync_fs(fs);
+        }
+        FREE_NAMBUF();
+    }
+
+    LEAVE_FF(fs, res);
+}
+
+#endif  /* _USE_CHMOD && !_FS_READONLY */
+
+
+
+#if _USE_LABEL
+/*-----------------------------------------------------------------------*/
+/* Get Volume Label                                                      */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_getlabel (
+    FATFS *fs,
+    TCHAR* label,       /* Pointer to a buffer to return the volume label */
+    DWORD* vsn          /* Pointer to a variable to return the volume serial number */
+)
+{
+    FRESULT res;
+    DIR dj;
+    UINT si, di;
+#if _LFN_UNICODE || _FS_EXFAT
+    WCHAR w;
+#endif
+
+    /* Get logical drive */
+    res = find_volume(fs, 0);
+
+    /* Get volume label */
+    if (res == FR_OK && label) {
+        dj.obj.fs = fs; dj.obj.sclust = 0;  /* Open root directory */
+        res = dir_sdi(&dj, 0);
+        if (res == FR_OK) {
+            res = dir_read(&dj, 1);         /* Find a volume label entry */
+            if (res == FR_OK) {
+#if _FS_EXFAT
+                if (fs->fs_type == FS_EXFAT) {
+                    for (si = di = 0; si < dj.dir[XDIR_NumLabel]; si++) {   /* Extract volume label from 83 entry */
+                        w = ld_word(dj.dir + XDIR_Label + si * 2);
+#if _LFN_UNICODE
+                        label[di++] = w;
+#else
+                        w = ff_convert(w, 0);   /* Unicode -> OEM */
+                        if (w == 0) w = '?';    /* Replace wrong character */
+                        if (_DF1S && w >= 0x100) label[di++] = (char)(w >> 8);
+                        label[di++] = (char)w;
+#endif
+                    }
+                    label[di] = 0;
+                } else
+#endif
+                {
+                    si = di = 0;        /* Extract volume label from AM_VOL entry with code comversion */
+                    do {
+#if _LFN_UNICODE
+                        w = (si < 11) ? dj.dir[si++] : ' ';
+                        if (IsDBCS1(w) && si < 11 && IsDBCS2(dj.dir[si])) {
+                            w = w << 8 | dj.dir[si++];
+                        }
+                        label[di++] = ff_convert(w, 1); /* OEM -> Unicode */
+#else
+                        label[di++] = dj.dir[si++];
+#endif
+                    } while (di < 11);
+                    do {                /* Truncate trailing spaces */
+                        label[di] = 0;
+                        if (di == 0) break;
+                    } while (label[--di] == ' ');
+                }
+            }
+        }
+        if (res == FR_NO_FILE) {    /* No label entry and return nul string */
+            label[0] = 0;
+            res = FR_OK;
+        }
+    }
+
+    /* Get volume serial number */
+    if (res == FR_OK && vsn) {
+        res = move_window(fs, fs->volbase);
+        if (res == FR_OK) {
+            switch (fs->fs_type) {
+            case FS_EXFAT: di = BPB_VolIDEx; break;
+            case FS_FAT32: di = BS_VolID32; break;
+            default:       di = BS_VolID;
+            }
+            *vsn = ld_dword(fs->win + di);
+        }
+    }
+
+    LEAVE_FF(fs, res);
+}
+
+
+
+#if !_FS_READONLY
+/*-----------------------------------------------------------------------*/
+/* Set Volume Label                                                      */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_setlabel (
+    FATFS *fs,
+    const TCHAR* label  /* Pointer to the volume label to set */
+)
+{
+    FRESULT res;
+    DIR dj;
+    BYTE dirvn[22];
+    UINT i, j, slen;
+    WCHAR w;
+    static const char badchr[] = "\"*+,.:;<=>\?[]|\x7F";
+
+
+    /* Get logical drive */
+    res = find_volume(fs, FA_WRITE);
+    if (res != FR_OK) LEAVE_FF(fs, res);
+    dj.obj.fs = fs;
+
+    /* Get length of given volume label */
+    for (slen = 0; (UINT)label[slen] >= ' '; slen++) { } /* Get name length */
+
+#if _FS_EXFAT
+    if (fs->fs_type == FS_EXFAT) {  /* On the exFAT volume */
+        for (i = j = 0; i < slen; ) {   /* Create volume label in directory form */
+            w = label[i++];
+#if !_LFN_UNICODE
+            if (IsDBCS1(w)) {
+                w = (i < slen && IsDBCS2(label[i])) ? w << 8 | (BYTE)label[i++] : 0;
+            }
+            w = ff_convert(w, 1);
+#endif
+            if (w == 0 || chk_chr(badchr, w) || j == 22) {  /* Check validity check validity of the volume label */
+                LEAVE_FF(fs, FR_INVALID_NAME);
+            }
+            st_word(dirvn + j, w); j += 2;
+        }
+        slen = j;
+    } else
+#endif
+    {   /* On the FAT12/16/32 volume */
+        for ( ; slen && label[slen - 1] == ' '; slen--) ;   /* Remove trailing spaces */
+        if (slen) {     /* Is there a volume label to be set? */
+            dirvn[0] = 0; i = j = 0;    /* Create volume label in directory form */
+            do {
+#if _LFN_UNICODE
+                w = ff_convert(ff_wtoupper(label[i++]), 0);
+#else
+                w = (BYTE)label[i++];
+                if (IsDBCS1(w)) {
+                    w = (j < 10 && i < slen && IsDBCS2(label[i])) ? w << 8 | (BYTE)label[i++] : 0;
+                }
+#if _USE_LFN != 0
+                w = ff_convert(ff_wtoupper(ff_convert(w, 1)), 0);
+#else
+                if (IsLower(w)) w -= 0x20;          /* To upper ASCII characters */
+#ifdef _EXCVT
+                if (w >= 0x80) w = ExCvt[w - 0x80]; /* To upper extended characters (SBCS cfg) */
+#else
+                if (!_DF1S && w >= 0x80) w = 0;     /* Reject extended characters (ASCII cfg) */
+#endif
+#endif
+#endif
+                if (w == 0 || chk_chr(badchr, w) || j >= (UINT)((w >= 0x100) ? 10 : 11)) {  /* Reject invalid characters for volume label */
+                    LEAVE_FF(fs, FR_INVALID_NAME);
+                }
+                if (w >= 0x100) dirvn[j++] = (BYTE)(w >> 8);
+                dirvn[j++] = (BYTE)w;
+            } while (i < slen);
+            while (j < 11) dirvn[j++] = ' ';    /* Fill remaining name field */
+            if (dirvn[0] == DDEM) LEAVE_FF(fs, FR_INVALID_NAME);    /* Reject illegal name (heading DDEM) */
+        }
+    }
+
+    /* Set volume label */
+    dj.obj.sclust = 0;      /* Open root directory */
+    res = dir_sdi(&dj, 0);
+    if (res == FR_OK) {
+        res = dir_read(&dj, 1); /* Get volume label entry */
+        if (res == FR_OK) {
+            if (_FS_EXFAT && fs->fs_type == FS_EXFAT) {
+                dj.dir[XDIR_NumLabel] = (BYTE)(slen / 2);   /* Change the volume label */
+                mem_cpy(dj.dir + XDIR_Label, dirvn, slen);
+            } else {
+                if (slen) {
+                    mem_cpy(dj.dir, dirvn, 11); /* Change the volume label */
+                } else {
+                    dj.dir[DIR_Name] = DDEM;    /* Remove the volume label */
+                }
+            }
+            fs->wflag = 1;
+            res = sync_fs(fs);
+        } else {            /* No volume label entry is found or error */
+            if (res == FR_NO_FILE) {
+                res = FR_OK;
+                if (slen) { /* Create a volume label entry */
+                    res = dir_alloc(&dj, 1);    /* Allocate an entry */
+                    if (res == FR_OK) {
+                        mem_set(dj.dir, 0, SZDIRE); /* Clear the entry */
+                        if (_FS_EXFAT && fs->fs_type == FS_EXFAT) {
+                            dj.dir[XDIR_Type] = 0x83;       /* Create 83 entry */
+                            dj.dir[XDIR_NumLabel] = (BYTE)(slen / 2);
+                            mem_cpy(dj.dir + XDIR_Label, dirvn, slen);
+                        } else {
+                            dj.dir[DIR_Attr] = AM_VOL;      /* Create volume label entry */
+                            mem_cpy(dj.dir, dirvn, 11);
+                        }
+                        fs->wflag = 1;
+                        res = sync_fs(fs);
+                    }
+                }
+            }
+        }
+    }
+
+    LEAVE_FF(fs, res);
+}
+
+#endif /* !_FS_READONLY */
+#endif /* _USE_LABEL */
+
+
+
+#if _USE_EXPAND && !_FS_READONLY
+/*-----------------------------------------------------------------------*/
+/* Allocate a Contiguous Blocks to the File                              */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_expand (
+    FIL* fp,        /* Pointer to the file object */
+    FSIZE_t fsz,    /* File size to be expanded to */
+    BYTE opt        /* Operation mode 0:Find and prepare or 1:Find and allocate */
+)
+{
+    FRESULT res;
+    FATFS *fs;
+    DWORD n, clst, stcl, scl, ncl, tcl, lclst;
+
+
+    res = validate(&fp->obj, &fs);      /* Check validity of the file object */
+    if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res);
+    if (fsz == 0 || fp->obj.objsize != 0 || !(fp->flag & FA_WRITE)) LEAVE_FF(fs, FR_DENIED);
+#if _FS_EXFAT
+    if (fs->fs_type != FS_EXFAT && fsz >= 0x100000000) LEAVE_FF(fs, FR_DENIED); /* Check if in size limit */
+#endif
+    n = (DWORD)fs->csize * SS(fs);  /* Cluster size */
+    tcl = (DWORD)(fsz / n) + ((fsz & (n - 1)) ? 1 : 0); /* Number of clusters required */
+    stcl = fs->last_clst; lclst = 0;
+    if (stcl < 2 || stcl >= fs->n_fatent) stcl = 2;
+
+#if _FS_EXFAT
+    if (fs->fs_type == FS_EXFAT) {
+        scl = find_bitmap(fs, stcl, tcl);           /* Find a contiguous cluster block */
+        if (scl == 0) res = FR_DENIED;              /* No contiguous cluster block was found */
+        if (scl == 0xFFFFFFFF) res = FR_DISK_ERR;
+        if (res == FR_OK) {
+            if (opt) {
+                res = change_bitmap(fs, scl, tcl, 1);   /* Mark the cluster block 'in use' */
+                lclst = scl + tcl - 1;
+            } else {
+                lclst = scl - 1;
+            }
+        }
+    } else
+#endif
+    {
+        scl = clst = stcl; ncl = 0;
+        for (;;) {  /* Find a contiguous cluster block */
+            n = get_fat(&fp->obj, clst);
+            if (++clst >= fs->n_fatent) clst = 2;
+            if (n == 1) { res = FR_INT_ERR; break; }
+            if (n == 0xFFFFFFFF) { res = FR_DISK_ERR; break; }
+            if (n == 0) {   /* Is it a free cluster? */
+                if (++ncl == tcl) break;    /* Break if a contiguous cluster block is found */
+            } else {
+                scl = clst; ncl = 0;        /* Not a free cluster */
+            }
+            if (clst == stcl) { res = FR_DENIED; break; }   /* No contiguous cluster? */
+        }
+        if (res == FR_OK) {
+            if (opt) {
+                for (clst = scl, n = tcl; n; clst++, n--) { /* Create a cluster chain on the FAT */
+                    res = put_fat(fs, clst, (n == 1) ? 0xFFFFFFFF : clst + 1);
+                    if (res != FR_OK) break;
+                    lclst = clst;
+                }
+            } else {
+                lclst = scl - 1;
+            }
+        }
+    }
+
+    if (res == FR_OK) {
+        fs->last_clst = lclst;      /* Set suggested start cluster to start next */
+        if (opt) {
+            fp->obj.sclust = scl;       /* Update object allocation information */
+            fp->obj.objsize = fsz;
+            if (_FS_EXFAT) fp->obj.stat = 2;    /* Set status 'contiguous chain' */
+            fp->flag |= FA_MODIFIED;
+            if (fs->free_clst  < fs->n_fatent - 2) {    /* Update FSINFO */
+                fs->free_clst -= tcl;
+                fs->fsi_flag |= 1;
+            }
+        }
+    }
+
+    LEAVE_FF(fs, res);
+}
+
+#endif /* _USE_EXPAND && !_FS_READONLY */
+
+
+
+#if _USE_FORWARD
+/*-----------------------------------------------------------------------*/
+/* Forward data to the stream directly                                   */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_forward (
+    FIL* fp,                        /* Pointer to the file object */
+    UINT (*func)(const BYTE*,UINT), /* Pointer to the streaming function */
+    UINT btf,                       /* Number of bytes to forward */
+    UINT* bf                        /* Pointer to number of bytes forwarded */
+)
+{
+    FRESULT res;
+    FATFS *fs;
+    DWORD clst, sect;
+    FSIZE_t remain;
+    UINT rcnt, csect;
+    BYTE *dbuf;
+
+
+    *bf = 0;    /* Clear transfer byte counter */
+    res = validate(&fp->obj, &fs);      /* Check validity of the file object */
+    if (res != FR_OK || (res = (FRESULT)fp->err) != FR_OK) LEAVE_FF(fs, res);
+    if (!(fp->flag & FA_READ)) LEAVE_FF(fs, FR_DENIED); /* Check access mode */
+
+    remain = fp->obj.objsize - fp->fptr;
+    if (btf > remain) btf = (UINT)remain;           /* Truncate btf by remaining bytes */
+
+    for ( ;  btf && (*func)(0, 0);                  /* Repeat until all data transferred or stream goes busy */
+        fp->fptr += rcnt, *bf += rcnt, btf -= rcnt) {
+        csect = (UINT)(fp->fptr / SS(fs) & (fs->csize - 1));    /* Sector offset in the cluster */
+        if (fp->fptr % SS(fs) == 0) {               /* On the sector boundary? */
+            if (csect == 0) {                       /* On the cluster boundary? */
+                clst = (fp->fptr == 0) ?            /* On the top of the file? */
+                    fp->obj.sclust : get_fat(&fp->obj, fp->clust);
+                if (clst <= 1) ABORT(fs, FR_INT_ERR);
+                if (clst == 0xFFFFFFFF) ABORT(fs, FR_DISK_ERR);
+                fp->clust = clst;                   /* Update current cluster */
+            }
+        }
+        sect = clust2sect(fs, fp->clust);           /* Get current data sector */
+        if (!sect) ABORT(fs, FR_INT_ERR);
+        sect += csect;
+#if _FS_TINY
+        if (move_window(fs, sect) != FR_OK) ABORT(fs, FR_DISK_ERR); /* Move sector window to the file data */
+        dbuf = fs->win;
+#else
+        if (fp->sect != sect) {     /* Fill sector cache with file data */
+#if !_FS_READONLY
+            if (fp->flag & FA_DIRTY) {      /* Write-back dirty sector cache */
+                if (disk_write(fs->drv, fp->buf, fp->sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);
+                fp->flag &= (BYTE)~FA_DIRTY;
+            }
+#endif
+            if (disk_read(fs->drv, fp->buf, sect, 1) != RES_OK) ABORT(fs, FR_DISK_ERR);
+        }
+        dbuf = fp->buf;
+#endif
+        fp->sect = sect;
+        rcnt = SS(fs) - (UINT)fp->fptr % SS(fs);    /* Number of bytes left in the sector */
+        if (rcnt > btf) rcnt = btf;                 /* Clip it by btr if needed */
+        rcnt = (*func)(dbuf + ((UINT)fp->fptr % SS(fs)), rcnt); /* Forward the file data */
+        if (!rcnt) ABORT(fs, FR_INT_ERR);
+    }
+
+    LEAVE_FF(fs, FR_OK);
+}
+#endif /* _USE_FORWARD */
+
+
+
+#if _USE_MKFS && !_FS_READONLY
+/*-----------------------------------------------------------------------*/
+/* Create FAT file system on the logical drive                           */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_mkfs (
+    FATFS *fs,
+    BYTE opt,           /* Format option */
+    DWORD au,           /* Size of allocation unit [byte] */
+    void* work,         /* Pointer to working buffer */
+    UINT len            /* Size of working buffer */
+)
+{
+    const UINT n_fats = 1;      /* Number of FATs for FAT12/16/32 volume (1 or 2) */
+    const UINT n_rootdir = 512; /* Number of root directory entries for FAT12/16 volume */
+    static const WORD cst[] = {1, 4, 16, 64, 256, 512, 0};  /* Cluster size boundary for FAT12/16 volume (4Ks unit) */
+    static const WORD cst32[] = {1, 2, 4, 8, 16, 32, 0};    /* Cluster size boundary for FAT32 volume (128Ks unit) */
+    BYTE fmt, sys, *buf, *pte, part; void *pdrv;
+    WORD ss;
+    DWORD szb_buf, sz_buf, sz_blk, n_clst, pau, sect, nsect, n;
+    DWORD b_vol, b_fat, b_data;             /* Base LBA for volume, fat, data */
+    DWORD sz_vol, sz_rsv, sz_fat, sz_dir;   /* Size for volume, fat, dir, data */
+    UINT i;
+    DSTATUS stat;
+#if _USE_TRIM || _FS_EXFAT
+    DWORD tbl[3];
+#endif
+
+
+    /* Check mounted drive and clear work area */
+    fs->fs_type = 0;    /* Clear mounted volume */
+    pdrv = fs->drv;     /* Physical drive */
+    part = LD2PT(fs);   /* Partition (0:create as new, 1-4:get from partition table) */
+
+    /* Check physical drive status */
+    disk_ioctl(pdrv, IOCTL_INIT, &stat);
+    if (stat & STA_NOINIT) return FR_NOT_READY;
+    if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
+    if (disk_ioctl(pdrv, GET_BLOCK_SIZE, &sz_blk) != RES_OK || !sz_blk || sz_blk > 32768 || (sz_blk & (sz_blk - 1))) sz_blk = 1;    /* Erase block to align data area */
+#if _MAX_SS != _MIN_SS      /* Get sector size of the medium */
+    if (disk_ioctl(pdrv, GET_SECTOR_SIZE, &ss) != RES_OK) return FR_DISK_ERR;
+    if (ss > _MAX_SS || ss < _MIN_SS || (ss & (ss - 1))) return FR_DISK_ERR;
+#else
+    ss = _MAX_SS;
+#endif
+    if ((au != 0 && au < ss) || au > 0x1000000 || (au & (au - 1))) return FR_INVALID_PARAMETER; /* Check if au is valid */
+    au /= ss;   /* Cluster size in unit of sector */
+
+    /* Get working buffer */
+    buf = (BYTE*)work;      /* Working buffer */
+    sz_buf = len / ss;      /* Size of working buffer (sector) */
+    szb_buf = sz_buf * ss;  /* Size of working buffer (byte) */
+    if (!szb_buf) return FR_MKFS_ABORTED;
+
+    /* Determine where the volume to be located (b_vol, sz_vol) */
+    if (_MULTI_PARTITION && part != 0) {
+        /* Get partition information from partition table in the MBR */
+        if (disk_read(pdrv, buf, 0, 1) != RES_OK) return FR_DISK_ERR;   /* Load MBR */
+        if (ld_word(buf + BS_55AA) != 0xAA55) return FR_MKFS_ABORTED;   /* Check if MBR is valid */
+        pte = buf + (MBR_Table + (part - 1) * SZ_PTE);
+        if (!pte[PTE_System]) return FR_MKFS_ABORTED;   /* No partition? */
+        b_vol = ld_dword(pte + PTE_StLba);      /* Get volume start sector */
+        sz_vol = ld_dword(pte + PTE_SizLba);    /* Get volume size */
+    } else {
+        /* Create a single-partition in this function */
+        if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &sz_vol) != RES_OK) return FR_DISK_ERR;
+        b_vol = (opt & FM_SFD) ? 0 : 63;        /* Volume start sector */
+        if (sz_vol < b_vol) return FR_MKFS_ABORTED;
+        sz_vol -= b_vol;                        /* Volume size */
+    }
+    if (sz_vol < 50) return FR_MKFS_ABORTED;   /* Check if volume size is >=50s */
+
+    /* Pre-determine the FAT type */
+    do {
+        if (_FS_EXFAT && (opt & FM_EXFAT)) {    /* exFAT possible? */
+            if ((opt & FM_ANY) == FM_EXFAT || sz_vol >= 0x4000000 || au > 128) {    /* exFAT only, vol >= 64Ms or au > 128s ? */
+                fmt = FS_EXFAT; break;
+            }
+        }
+        if (au > 128) return FR_INVALID_PARAMETER;  /* Too large au for FAT/FAT32 */
+        if (opt & FM_FAT32) {   /* FAT32 possible? */
+            if ((opt & FM_ANY) == FM_FAT32 || !(opt & FM_FAT)) {    /* FAT32 only or no-FAT? */
+                fmt = FS_FAT32; break;
+            }
+        }
+        if (!(opt & FM_FAT)) return FR_INVALID_PARAMETER;   /* no-FAT? */
+        fmt = FS_FAT16;
+    } while (0);
+
+#if _FS_EXFAT
+    if (fmt == FS_EXFAT) {  /* Create an exFAT volume */
+        DWORD szb_bit, szb_case, sum, nb, cl;
+        WCHAR ch, si;
+        UINT j, st;
+        BYTE b;
+
+        if (sz_vol < 0x1000) return FR_MKFS_ABORTED;    /* Too small volume? */
+#if _USE_TRIM
+        tbl[0] = b_vol; tbl[1] = b_vol + sz_vol - 1;    /* Inform the device the volume area can be erased */
+        disk_ioctl(pdrv, CTRL_TRIM, tbl);
+#endif
+        /* Determine FAT location, data location and number of clusters */
+        if (!au) {  /* au auto-selection */
+            au = 8;
+            if (sz_vol >= 0x80000) au = 64;     /* >= 512Ks */
+            if (sz_vol >= 0x4000000) au = 256;  /* >= 64Ms */
+        }
+        b_fat = b_vol + 32;                                     /* FAT start at offset 32 */
+        sz_fat = ((sz_vol / au + 2) * 4 + ss - 1) / ss;         /* Number of FAT sectors */
+        b_data = (b_fat + sz_fat + sz_blk - 1) & ~(sz_blk - 1); /* Align data area to the erase block boundary */
+        if (b_data >= sz_vol / 2) return FR_MKFS_ABORTED;       /* Too small volume? */
+        n_clst = (sz_vol - (b_data - b_vol)) / au;              /* Number of clusters */
+        if (n_clst <16) return FR_MKFS_ABORTED;                 /* Too few clusters? */
+        if (n_clst > MAX_EXFAT) return FR_MKFS_ABORTED;         /* Too many clusters? */
+
+        szb_bit = (n_clst + 7) / 8;                     /* Size of allocation bitmap */
+        tbl[0] = (szb_bit + au * ss - 1) / (au * ss);   /* Number of allocation bitmap clusters */
+
+        /* Create a compressed up-case table */
+        sect = b_data + au * tbl[0];    /* Table start sector */
+        sum = 0;                        /* Table checksum to be stored in the 82 entry */
+        st = si = i = j = szb_case = 0;
+        do {
+            switch (st) {
+            case 0:
+                ch = ff_wtoupper(si);   /* Get an up-case char */
+                if (ch != si) {
+                    si++; break;        /* Store the up-case char if exist */
+                }
+                for (j = 1; (WCHAR)(si + j) && (WCHAR)(si + j) == ff_wtoupper((WCHAR)(si + j)); j++) ;  /* Get run length of no-case block */
+                if (j >= 128) {
+                    ch = 0xFFFF; st = 2; break; /* Compress the no-case block if run is >= 128 */
+                }
+                st = 1;         /* Do not compress short run */
+                /* continue */
+            case 1:
+                ch = si++;      /* Fill the short run */
+                if (--j == 0) st = 0;
+                break;
+            default:
+                ch = (WCHAR)j; si += j; /* Number of chars to skip */
+                st = 0;
+            }
+            sum = xsum32(buf[i + 0] = (BYTE)ch, sum);       /* Put it into the write buffer */
+            sum = xsum32(buf[i + 1] = (BYTE)(ch >> 8), sum);
+            i += 2; szb_case += 2;
+            if (!si || i == szb_buf) {      /* Write buffered data when buffer full or end of process */
+                n = (i + ss - 1) / ss;
+                if (disk_write(pdrv, buf, sect, n) != RES_OK) return FR_DISK_ERR;
+                sect += n; i = 0;
+            }
+        } while (si);
+        tbl[1] = (szb_case + au * ss - 1) / (au * ss);  /* Number of up-case table clusters */
+        tbl[2] = 1;                                     /* Number of root dir clusters */
+
+        /* Initialize the allocation bitmap */
+        sect = b_data; nsect = (szb_bit + ss - 1) / ss; /* Start of bitmap and number of sectors */
+        nb = tbl[0] + tbl[1] + tbl[2];                  /* Number of clusters in-use by system */
+        do {
+            mem_set(buf, 0, szb_buf);
+            for (i = 0; nb >= 8 && i < szb_buf; buf[i++] = 0xFF, nb -= 8) ;
+            for (b = 1; nb && i < szb_buf; buf[i] |= b, b <<= 1, nb--) ;
+            n = (nsect > sz_buf) ? sz_buf : nsect;      /* Write the buffered data */
+            if (disk_write(pdrv, buf, sect, n) != RES_OK) return FR_DISK_ERR;
+            sect += n; nsect -= n;
+        } while (nsect);
+
+        /* Initialize the FAT */
+        sect = b_fat; nsect = sz_fat;   /* Start of FAT and number of FAT sectors */
+        j = nb = cl = 0;
+        do {
+            mem_set(buf, 0, szb_buf); i = 0;    /* Clear work area and reset write index */
+            if (cl == 0) {  /* Set entry 0 and 1 */
+                st_dword(buf + i, 0xFFFFFFF8); i += 4; cl++;
+                st_dword(buf + i, 0xFFFFFFFF); i += 4; cl++;
+            }
+            do {            /* Create chains of bitmap, up-case and root dir */
+                while (nb && i < szb_buf) {         /* Create a chain */
+                    st_dword(buf + i, (nb > 1) ? cl + 1 : 0xFFFFFFFF);
+                    i += 4; cl++; nb--;
+                }
+                if (!nb && j < 3) nb = tbl[j++];    /* Next chain */
+            } while (nb && i < szb_buf);
+            n = (nsect > sz_buf) ? sz_buf : nsect;  /* Write the buffered data */
+            if (disk_write(pdrv, buf, sect, n) != RES_OK) return FR_DISK_ERR;
+            sect += n; nsect -= n;
+        } while (nsect);
+
+        /* Initialize the root directory */
+        mem_set(buf, 0, szb_buf);
+        buf[SZDIRE * 0 + 0] = 0x83;     /* 83 entry (volume label) */
+        buf[SZDIRE * 1 + 0] = 0x81;     /* 81 entry (allocation bitmap) */
+        st_dword(buf + SZDIRE * 1 + 20, 2);
+        st_dword(buf + SZDIRE * 1 + 24, szb_bit);
+        buf[SZDIRE * 2 + 0] = 0x82;     /* 82 entry (up-case table) */
+        st_dword(buf + SZDIRE * 2 + 4, sum);
+        st_dword(buf + SZDIRE * 2 + 20, 2 + tbl[0]);
+        st_dword(buf + SZDIRE * 2 + 24, szb_case);
+        sect = b_data + au * (tbl[0] + tbl[1]); nsect = au; /* Start of the root directory and number of sectors */
+        do {    /* Fill root directory sectors */
+            n = (nsect > sz_buf) ? sz_buf : nsect;
+            if (disk_write(pdrv, buf, sect, n) != RES_OK) return FR_DISK_ERR;
+            mem_set(buf, 0, ss);
+            sect += n; nsect -= n;
+        } while (nsect);
+
+        /* Create two set of the exFAT VBR blocks */
+        sect = b_vol;
+        for (n = 0; n < 2; n++) {
+            /* Main record (+0) */
+            mem_set(buf, 0, ss);
+            mem_cpy(buf + BS_JmpBoot, "\xEB\x76\x90" "EXFAT   ", 11);   /* Boot jump code (x86), OEM name */
+            st_dword(buf + BPB_VolOfsEx, b_vol);                    /* Volume offset in the physical drive [sector] */
+            st_dword(buf + BPB_TotSecEx, sz_vol);                   /* Volume size [sector] */
+            st_dword(buf + BPB_FatOfsEx, b_fat - b_vol);            /* FAT offset [sector] */
+            st_dword(buf + BPB_FatSzEx, sz_fat);                    /* FAT size [sector] */
+            st_dword(buf + BPB_DataOfsEx, b_data - b_vol);          /* Data offset [sector] */
+            st_dword(buf + BPB_NumClusEx, n_clst);                  /* Number of clusters */
+            st_dword(buf + BPB_RootClusEx, 2 + tbl[0] + tbl[1]);    /* Root dir cluster # */
+            st_dword(buf + BPB_VolIDEx, GET_FATTIME());             /* VSN */
+            st_word(buf + BPB_FSVerEx, 0x100);                      /* File system version (1.00) */
+            for (buf[BPB_BytsPerSecEx] = 0, i = ss; i >>= 1; buf[BPB_BytsPerSecEx]++) ; /* Log2 of sector size [byte] */
+            for (buf[BPB_SecPerClusEx] = 0, i = au; i >>= 1; buf[BPB_SecPerClusEx]++) ; /* Log2 of cluster size [sector] */
+            buf[BPB_NumFATsEx] = 1;                 /* Number of FATs */
+            buf[BPB_DrvNumEx] = 0x80;               /* Drive number (for int13) */
+            st_word(buf + BS_BootCodeEx, 0xFEEB);   /* Boot code (x86) */
+            st_word(buf + BS_55AA, 0xAA55);         /* Signature (placed here regardless of sector size) */
+            for (i = sum = 0; i < ss; i++) {        /* VBR checksum */
+                if (i != BPB_VolFlagEx && i != BPB_VolFlagEx + 1 && i != BPB_PercInUseEx) sum = xsum32(buf[i], sum);
+            }
+            if (disk_write(pdrv, buf, sect++, 1) != RES_OK) return FR_DISK_ERR;
+            /* Extended bootstrap record (+1..+8) */
+            mem_set(buf, 0, ss);
+            st_word(buf + ss - 2, 0xAA55);  /* Signature (placed at end of sector) */
+            for (j = 1; j < 9; j++) {
+                for (i = 0; i < ss; sum = xsum32(buf[i++], sum)) ;  /* VBR checksum */
+                if (disk_write(pdrv, buf, sect++, 1) != RES_OK) return FR_DISK_ERR;
+            }
+            /* OEM/Reserved record (+9..+10) */
+            mem_set(buf, 0, ss);
+            for ( ; j < 11; j++) {
+                for (i = 0; i < ss; sum = xsum32(buf[i++], sum)) ;  /* VBR checksum */
+                if (disk_write(pdrv, buf, sect++, 1) != RES_OK) return FR_DISK_ERR;
+            }
+            /* Sum record (+11) */
+            for (i = 0; i < ss; i += 4) st_dword(buf + i, sum);     /* Fill with checksum value */
+            if (disk_write(pdrv, buf, sect++, 1) != RES_OK) return FR_DISK_ERR;
+        }
+
+    } else
+#endif  /* _FS_EXFAT */
+    {   /* Create an FAT12/16/32 volume */
+        do {
+            pau = au;
+            /* Pre-determine number of clusters and FAT sub-type */
+            if (fmt == FS_FAT32) {  /* FAT32 volume */
+                if (!pau) { /* au auto-selection */
+                    n = sz_vol / 0x20000;   /* Volume size in unit of 128KS */
+                    for (i = 0, pau = 1; cst32[i] && cst32[i] <= n; i++, pau <<= 1) ;   /* Get from table */
+                }
+                n_clst = sz_vol / pau;  /* Number of clusters */
+                sz_fat = (n_clst * 4 + 8 + ss - 1) / ss;    /* FAT size [sector] */
+                sz_rsv = 32;    /* Number of reserved sectors */
+                sz_dir = 0;     /* No static directory */
+                if (n_clst <= MAX_FAT16 || n_clst > MAX_FAT32) return FR_MKFS_ABORTED;
+            } else {                /* FAT12/16 volume */
+                if (!pau) { /* au auto-selection */
+                    n = sz_vol / 0x1000;    /* Volume size in unit of 4KS */
+                    for (i = 0, pau = 1; cst[i] && cst[i] <= n; i++, pau <<= 1) ;   /* Get from table */
+                }
+                n_clst = sz_vol / pau;
+                if (n_clst > MAX_FAT12) {
+                    n = n_clst * 2 + 4;     /* FAT size [byte] */
+                } else {
+                    fmt = FS_FAT12;
+                    n = (n_clst * 3 + 1) / 2 + 3;   /* FAT size [byte] */
+                }
+                sz_fat = (n + ss - 1) / ss;     /* FAT size [sector] */
+                sz_rsv = 1;                     /* Number of reserved sectors */
+                sz_dir = (DWORD)n_rootdir * SZDIRE / ss;    /* Rootdir size [sector] */
+            }
+            b_fat = b_vol + sz_rsv;                     /* FAT base */
+            b_data = b_fat + sz_fat * n_fats + sz_dir;  /* Data base */
+
+            /* Align data base to erase block boundary (for flash memory media) */
+            n = ((b_data + sz_blk - 1) & ~(sz_blk - 1)) - b_data;   /* Next nearest erase block from current data base */
+            if (fmt == FS_FAT32) {      /* FAT32: Move FAT base */
+                sz_rsv += n; b_fat += n;
+            } else {                    /* FAT12/16: Expand FAT size */
+                sz_fat += n / n_fats;
+            }
+
+            /* Determine number of clusters and final check of validity of the FAT sub-type */
+            if (sz_vol < b_data + pau * 16 - b_vol) return FR_MKFS_ABORTED; /* Too small volume */
+            n_clst = (sz_vol - sz_rsv - sz_fat * n_fats - sz_dir) / pau;
+            if (fmt == FS_FAT32) {
+                if (n_clst <= MAX_FAT16) {  /* Too few clusters for FAT32 */
+                    if (!au && (au = pau / 2) != 0) continue;   /* Adjust cluster size and retry */
+                    return FR_MKFS_ABORTED;
+                }
+            }
+            if (fmt == FS_FAT16) {
+                if (n_clst > MAX_FAT16) {   /* Too many clusters for FAT16 */
+                    if (!au && (pau * 2) <= 64) {
+                        au = pau * 2; continue;     /* Adjust cluster size and retry */
+                    }
+                    if ((opt & FM_FAT32)) {
+                        fmt = FS_FAT32; continue;   /* Switch type to FAT32 and retry */
+                    }
+                    if (!au && (au = pau * 2) <= 128) continue; /* Adjust cluster size and retry */
+                    return FR_MKFS_ABORTED;
+                }
+                if  (n_clst <= MAX_FAT12) { /* Too few clusters for FAT16 */
+                    if (!au && (au = pau * 2) <= 128) continue; /* Adjust cluster size and retry */
+                    return FR_MKFS_ABORTED;
+                }
+            }
+            if (fmt == FS_FAT12 && n_clst > MAX_FAT12) return FR_MKFS_ABORTED;  /* Too many clusters for FAT12 */
+
+            /* Ok, it is the valid cluster configuration */
+            break;
+        } while (1);
+
+#if _USE_TRIM
+        tbl[0] = b_vol; tbl[1] = b_vol + sz_vol - 1;    /* Inform the device the volume area can be erased */
+        disk_ioctl(pdrv, CTRL_TRIM, tbl);
+#endif
+        /* Create FAT VBR */
+        mem_set(buf, 0, ss);
+        mem_cpy(buf + BS_JmpBoot, "\xEB\xFE\x90" "MSDOS5.0", 11);/* Boot jump code (x86), OEM name */
+        st_word(buf + BPB_BytsPerSec, ss);              /* Sector size [byte] */
+        buf[BPB_SecPerClus] = (BYTE)pau;                /* Cluster size [sector] */
+        st_word(buf + BPB_RsvdSecCnt, (WORD)sz_rsv);    /* Size of reserved area */
+        buf[BPB_NumFATs] = (BYTE)n_fats;                /* Number of FATs */
+        st_word(buf + BPB_RootEntCnt, (WORD)((fmt == FS_FAT32) ? 0 : n_rootdir));   /* Number of root directory entries */
+        if (sz_vol < 0x10000) {
+            st_word(buf + BPB_TotSec16, (WORD)sz_vol);  /* Volume size in 16-bit LBA */
+        } else {
+            st_dword(buf + BPB_TotSec32, sz_vol);       /* Volume size in 32-bit LBA */
+        }
+        buf[BPB_Media] = 0xF8;                          /* Media descriptor byte */
+        st_word(buf + BPB_SecPerTrk, 63);               /* Number of sectors per track (for int13) */
+        st_word(buf + BPB_NumHeads, 255);               /* Number of heads (for int13) */
+        st_dword(buf + BPB_HiddSec, b_vol);             /* Volume offset in the physical drive [sector] */
+        if (fmt == FS_FAT32) {
+            st_dword(buf + BS_VolID32, GET_FATTIME());  /* VSN */
+            st_dword(buf + BPB_FATSz32, sz_fat);        /* FAT size [sector] */
+            st_dword(buf + BPB_RootClus32, 2);          /* Root directory cluster # (2) */
+            st_word(buf + BPB_FSInfo32, 1);             /* Offset of FSINFO sector (VBR + 1) */
+            st_word(buf + BPB_BkBootSec32, 6);          /* Offset of backup VBR (VBR + 6) */
+            buf[BS_DrvNum32] = 0x80;                    /* Drive number (for int13) */
+            buf[BS_BootSig32] = 0x29;                   /* Extended boot signature */
+            mem_cpy(buf + BS_VolLab32, "NO NAME    " "FAT32   ", 19);   /* Volume label, FAT signature */
+        } else {
+            st_dword(buf + BS_VolID, GET_FATTIME());    /* VSN */
+            st_word(buf + BPB_FATSz16, (WORD)sz_fat);   /* FAT size [sector] */
+            buf[BS_DrvNum] = 0x80;                      /* Drive number (for int13) */
+            buf[BS_BootSig] = 0x29;                     /* Extended boot signature */
+            mem_cpy(buf + BS_VolLab, "NO NAME    " "FAT     ", 19); /* Volume label, FAT signature */
+        }
+        st_word(buf + BS_55AA, 0xAA55);                 /* Signature (offset is fixed here regardless of sector size) */
+        if (disk_write(pdrv, buf, b_vol, 1) != RES_OK) return FR_DISK_ERR;  /* Write it to the VBR sector */
+
+        /* Create FSINFO record if needed */
+        if (fmt == FS_FAT32) {
+            disk_write(pdrv, buf, b_vol + 6, 1);        /* Write backup VBR (VBR + 6) */
+            mem_set(buf, 0, ss);
+            st_dword(buf + FSI_LeadSig, 0x41615252);
+            st_dword(buf + FSI_StrucSig, 0x61417272);
+            st_dword(buf + FSI_Free_Count, n_clst - 1); /* Number of free clusters */
+            st_dword(buf + FSI_Nxt_Free, 2);            /* Last allocated cluster# */
+            st_word(buf + BS_55AA, 0xAA55);
+            disk_write(pdrv, buf, b_vol + 7, 1);        /* Write backup FSINFO (VBR + 7) */
+            disk_write(pdrv, buf, b_vol + 1, 1);        /* Write original FSINFO (VBR + 1) */
+        }
+
+        /* Initialize FAT area */
+        mem_set(buf, 0, (UINT)szb_buf);
+        sect = b_fat;       /* FAT start sector */
+        for (i = 0; i < n_fats; i++) {          /* Initialize FATs each */
+            if (fmt == FS_FAT32) {
+                st_dword(buf + 0, 0xFFFFFFF8);  /* Entry 0 */
+                st_dword(buf + 4, 0xFFFFFFFF);  /* Entry 1 */
+                st_dword(buf + 8, 0x0FFFFFFF);  /* Entry 2 (root directory) */
+            } else {
+                st_dword(buf + 0, (fmt == FS_FAT12) ? 0xFFFFF8 : 0xFFFFFFF8);   /* Entry 0 and 1 */
+            }
+            nsect = sz_fat;     /* Number of FAT sectors */
+            do {    /* Fill FAT sectors */
+                n = (nsect > sz_buf) ? sz_buf : nsect;
+                if (disk_write(pdrv, buf, sect, (UINT)n) != RES_OK) return FR_DISK_ERR;
+                mem_set(buf, 0, ss);
+                sect += n; nsect -= n;
+            } while (nsect);
+        }
+
+        /* Initialize root directory (fill with zero) */
+        nsect = (fmt == FS_FAT32) ? pau : sz_dir;   /* Number of root directory sectors */
+        do {
+            n = (nsect > sz_buf) ? sz_buf : nsect;
+            if (disk_write(pdrv, buf, sect, (UINT)n) != RES_OK) return FR_DISK_ERR;
+            sect += n; nsect -= n;
+        } while (nsect);
+    }
+
+    /* Determine system ID in the partition table */
+    if (_FS_EXFAT && fmt == FS_EXFAT) {
+        sys = 0x07;         /* HPFS/NTFS/exFAT */
+    } else {
+        if (fmt == FS_FAT32) {
+            sys = 0x0C;     /* FAT32X */
+        } else {
+            if (sz_vol >= 0x10000) {
+                sys = 0x06; /* FAT12/16 (>=64KS) */
+            } else {
+                sys = (fmt == FS_FAT16) ? 0x04 : 0x01;  /* FAT16 (<64KS) : FAT12 (<64KS) */
+            }
+        }
+    }
+
+    if (_MULTI_PARTITION && part != 0) {
+        /* Update system ID in the partition table */
+        if (disk_read(pdrv, buf, 0, 1) != RES_OK) return FR_DISK_ERR;   /* Read the MBR */
+        buf[MBR_Table + (part - 1) * SZ_PTE + PTE_System] = sys;        /* Set system type */
+        if (disk_write(pdrv, buf, 0, 1) != RES_OK) return FR_DISK_ERR;  /* Write it back to the MBR */
+    } else {
+        if (!(opt & FM_SFD)) {
+            /* Create partition table in FDISK format */
+            mem_set(buf, 0, ss);
+            st_word(buf + BS_55AA, 0xAA55);     /* MBR signature */
+            pte = buf + MBR_Table;              /* Create partition table for single partition in the drive */
+            pte[PTE_Boot] = 0;                  /* Boot indicator */
+            pte[PTE_StHead] = 1;                /* Start head */
+            pte[PTE_StSec] = 1;                 /* Start sector */
+            pte[PTE_StCyl] = 0;                 /* Start cylinder */
+            pte[PTE_System] = sys;              /* System type */
+            n = (b_vol + sz_vol) / (63 * 255);  /* (End CHS is incorrect) */
+            pte[PTE_EdHead] = 254;              /* End head */
+            pte[PTE_EdSec] = (BYTE)(n >> 2 | 63);   /* End sector */
+            pte[PTE_EdCyl] = (BYTE)n;           /* End cylinder */
+            st_dword(pte + PTE_StLba, b_vol);   /* Start offset in LBA */
+            st_dword(pte + PTE_SizLba, sz_vol); /* Size in sectors */
+            if (disk_write(pdrv, buf, 0, 1) != RES_OK) return FR_DISK_ERR;  /* Write it to the MBR */
+        }
+    }
+
+    if (disk_ioctl(pdrv, CTRL_SYNC, 0) != RES_OK) return FR_DISK_ERR;
+
+    return FR_OK;
+}
+
+
+
+#if _MULTI_PARTITION
+/*-----------------------------------------------------------------------*/
+/* Create partition table on the physical drive                          */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_fdisk (
+    void *pdrv,         /* Physical drive number */
+    const DWORD* szt,   /* Pointer to the size table for each partitions */
+    void* work          /* Pointer to the working buffer */
+)
+{
+    UINT i, n, sz_cyl, tot_cyl, b_cyl, e_cyl, p_cyl;
+    BYTE s_hd, e_hd, *p, *buf = (BYTE*)work;
+    DSTATUS stat;
+    DWORD sz_disk, sz_part, s_part;
+
+
+    disk_ioctl(pdrv, IOCTL_INIT, &stat);
+    if (stat & STA_NOINIT) return FR_NOT_READY;
+    if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
+    if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &sz_disk)) return FR_DISK_ERR;
+
+    /* Determine the CHS without any care of the drive geometry */
+    for (n = 16; n < 256 && sz_disk / n / 63 > 1024; n *= 2) ;
+    if (n == 256) n--;
+    e_hd = n - 1;
+    sz_cyl = 63 * n;
+    tot_cyl = sz_disk / sz_cyl;
+
+    /* Create partition table */
+    mem_set(buf, 0, _MAX_SS);
+    p = buf + MBR_Table; b_cyl = 0;
+    for (i = 0; i < 4; i++, p += SZ_PTE) {
+        p_cyl = (szt[i] <= 100U) ? (DWORD)tot_cyl * szt[i] / 100 : szt[i] / sz_cyl;
+        if (!p_cyl) continue;
+        s_part = (DWORD)sz_cyl * b_cyl;
+        sz_part = (DWORD)sz_cyl * p_cyl;
+        if (i == 0) {   /* Exclude first track of cylinder 0 */
+            s_hd = 1;
+            s_part += 63; sz_part -= 63;
+        } else {
+            s_hd = 0;
+        }
+        e_cyl = b_cyl + p_cyl - 1;
+        if (e_cyl >= tot_cyl) return FR_INVALID_PARAMETER;
+
+        /* Set partition table */
+        p[1] = s_hd;                        /* Start head */
+        p[2] = (BYTE)((b_cyl >> 2) + 1);    /* Start sector */
+        p[3] = (BYTE)b_cyl;                 /* Start cylinder */
+        p[4] = 0x06;                        /* System type (temporary setting) */
+        p[5] = e_hd;                        /* End head */
+        p[6] = (BYTE)((e_cyl >> 2) + 63);   /* End sector */
+        p[7] = (BYTE)e_cyl;                 /* End cylinder */
+        st_dword(p + 8, s_part);            /* Start sector in LBA */
+        st_dword(p + 12, sz_part);          /* Partition size */
+
+        /* Next partition */
+        b_cyl += p_cyl;
+    }
+    st_word(p, 0xAA55);
+
+    /* Write it to the MBR */
+    return (disk_write(pdrv, buf, 0, 1) != RES_OK || disk_ioctl(pdrv, CTRL_SYNC, 0) != RES_OK) ? FR_DISK_ERR : FR_OK;
+}
+
+#endif /* _MULTI_PARTITION */
+#endif /* _USE_MKFS && !_FS_READONLY */

lib/oofatfs/ff.h

@@ -0,0 +1,380 @@
+/* This file is part of ooFatFs, a customised version of FatFs
+ * See https://github.com/micropython/oofatfs for details
+ */
+
+/*----------------------------------------------------------------------------/
+/  FatFs - Generic FAT file system module  R0.12b                             /
+/-----------------------------------------------------------------------------/
+/
+/ Copyright (C) 2016, ChaN, all right reserved.
+/
+/ FatFs module is an open source software. Redistribution and use of FatFs in
+/ source and binary forms, with or without modification, are permitted provided
+/ that the following condition is met:
+
+/ 1. Redistributions of source code must retain the above copyright notice,
+/    this condition and the following disclaimer.
+/
+/ This software is provided by the copyright holder and contributors "AS IS"
+/ and any warranties related to this software are DISCLAIMED.
+/ The copyright owner or contributors be NOT LIABLE for any damages caused
+/ by use of this software.
+/----------------------------------------------------------------------------*/
+
+
+#ifndef _FATFS
+#define _FATFS  68020   /* Revision ID */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+
+/* This type MUST be 8-bit */
+typedef uint8_t BYTE;
+
+/* These types MUST be 16-bit */
+typedef int16_t SHORT;
+typedef uint16_t WORD;
+typedef uint16_t WCHAR;
+
+/* These types MUST be 16-bit or 32-bit */
+typedef int INT;
+typedef unsigned int UINT;
+
+/* These types MUST be 32-bit */
+typedef int32_t LONG;
+typedef uint32_t DWORD;
+
+/* This type MUST be 64-bit (Remove this for C89 compatibility) */
+typedef uint64_t QWORD;
+
+#include FFCONF_H          /* FatFs configuration options */
+
+#if _FATFS != _FFCONF
+#error Wrong configuration file (ffconf.h).
+#endif
+
+
+
+/* Definitions of volume management */
+
+#if _MULTI_PARTITION            /* Multiple partition configuration */
+#define LD2PT(fs) (fs->part)    /* Get partition index */
+#else                           /* Single partition configuration */
+#define LD2PT(fs) 0             /* Find first valid partition or in SFD */
+#endif
+
+
+
+/* Type of path name strings on FatFs API */
+
+#if _LFN_UNICODE            /* Unicode (UTF-16) string */
+#if _USE_LFN == 0
+#error _LFN_UNICODE must be 0 at non-LFN cfg.
+#endif
+#ifndef _INC_TCHAR
+typedef WCHAR TCHAR;
+#define _T(x) L ## x
+#define _TEXT(x) L ## x
+#endif
+#else                       /* ANSI/OEM string */
+#ifndef _INC_TCHAR
+typedef char TCHAR;
+#define _T(x) x
+#define _TEXT(x) x
+#endif
+#endif
+
+
+
+/* Type of file size variables */
+
+#if _FS_EXFAT
+#if _USE_LFN == 0
+#error LFN must be enabled when enable exFAT
+#endif
+typedef QWORD FSIZE_t;
+#else
+typedef DWORD FSIZE_t;
+#endif
+
+
+
+/* File system object structure (FATFS) */
+
+typedef struct {
+    void    *drv;           // block device underlying this filesystem
+#if _MULTI_PARTITION        /* Multiple partition configuration */
+    BYTE    part;           // Partition: 0:Auto detect, 1-4:Forced partition
+#endif
+    BYTE    fs_type;        /* File system type (0:N/A) */
+    BYTE    n_fats;         /* Number of FATs (1 or 2) */
+    BYTE    wflag;          /* win[] flag (b0:dirty) */
+    BYTE    fsi_flag;       /* FSINFO flags (b7:disabled, b0:dirty) */
+    WORD    id;             /* File system mount ID */
+    WORD    n_rootdir;      /* Number of root directory entries (FAT12/16) */
+    WORD    csize;          /* Cluster size [sectors] */
+#if _MAX_SS != _MIN_SS
+    WORD    ssize;          /* Sector size (512, 1024, 2048 or 4096) */
+#endif
+#if _USE_LFN != 0
+    WCHAR*  lfnbuf;         /* LFN working buffer */
+#endif
+#if _FS_EXFAT
+    BYTE*   dirbuf;         /* Directory entry block scratchpad buffer */
+#endif
+#if _FS_REENTRANT
+    _SYNC_t sobj;           /* Identifier of sync object */
+#endif
+#if !_FS_READONLY
+    DWORD   last_clst;      /* Last allocated cluster */
+    DWORD   free_clst;      /* Number of free clusters */
+#endif
+#if _FS_RPATH != 0
+    DWORD   cdir;           /* Current directory start cluster (0:root) */
+#if _FS_EXFAT
+    DWORD   cdc_scl;        /* Containing directory start cluster (invalid when cdir is 0) */
+    DWORD   cdc_size;       /* b31-b8:Size of containing directory, b7-b0: Chain status */
+    DWORD   cdc_ofs;        /* Offset in the containing directory (invalid when cdir is 0) */
+#endif
+#endif
+    DWORD   n_fatent;       /* Number of FAT entries (number of clusters + 2) */
+    DWORD   fsize;          /* Size of an FAT [sectors] */
+    DWORD   volbase;        /* Volume base sector */
+    DWORD   fatbase;        /* FAT base sector */
+    DWORD   dirbase;        /* Root directory base sector/cluster */
+    DWORD   database;       /* Data base sector */
+    DWORD   winsect;        /* Current sector appearing in the win[] */
+    BYTE    win[_MAX_SS];   /* Disk access window for Directory, FAT (and file data at tiny cfg) */
+} FATFS;
+
+
+
+/* Object ID and allocation information (_FDID) */
+
+typedef struct {
+    FATFS*  fs;         /* Pointer to the owner file system object */
+    WORD    id;         /* Owner file system mount ID */
+    BYTE    attr;       /* Object attribute */
+    BYTE    stat;       /* Object chain status (b1-0: =0:not contiguous, =2:contiguous (no data on FAT), =3:got flagmented, b2:sub-directory stretched) */
+    DWORD   sclust;     /* Object start cluster (0:no cluster or root directory) */
+    FSIZE_t objsize;    /* Object size (valid when sclust != 0) */
+#if _FS_EXFAT
+    DWORD   n_cont;     /* Size of coutiguous part, clusters - 1 (valid when stat == 3) */
+    DWORD   c_scl;      /* Containing directory start cluster (valid when sclust != 0) */
+    DWORD   c_size;     /* b31-b8:Size of containing directory, b7-b0: Chain status (valid when c_scl != 0) */
+    DWORD   c_ofs;      /* Offset in the containing directory (valid when sclust != 0) */
+#endif
+#if _FS_LOCK != 0
+    UINT    lockid;     /* File lock ID origin from 1 (index of file semaphore table Files[]) */
+#endif
+} _FDID;
+
+
+
+/* File object structure (FIL) */
+
+typedef struct {
+    _FDID   obj;            /* Object identifier (must be the 1st member to detect invalid object pointer) */
+    BYTE    flag;           /* File status flags */
+    BYTE    err;            /* Abort flag (error code) */
+    FSIZE_t fptr;           /* File read/write pointer (Zeroed on file open) */
+    DWORD   clust;          /* Current cluster of fpter (invalid when fprt is 0) */
+    DWORD   sect;           /* Sector number appearing in buf[] (0:invalid) */
+#if !_FS_READONLY
+    DWORD   dir_sect;       /* Sector number containing the directory entry */
+    BYTE*   dir_ptr;        /* Pointer to the directory entry in the win[] */
+#endif
+#if _USE_FASTSEEK
+    DWORD*  cltbl;          /* Pointer to the cluster link map table (nulled on open, set by application) */
+#endif
+#if !_FS_TINY
+    BYTE    buf[_MAX_SS];   /* File private data read/write window */
+#endif
+} FIL;
+
+
+
+/* Directory object structure (FF_DIR) */
+
+typedef struct {
+    _FDID   obj;            /* Object identifier */
+    DWORD   dptr;           /* Current read/write offset */
+    DWORD   clust;          /* Current cluster */
+    DWORD   sect;           /* Current sector */
+    BYTE*   dir;            /* Pointer to the directory item in the win[] */
+    BYTE    fn[12];         /* SFN (in/out) {body[8],ext[3],status[1]} */
+#if _USE_LFN != 0
+    DWORD   blk_ofs;        /* Offset of current entry block being processed (0xFFFFFFFF:Invalid) */
+#endif
+#if _USE_FIND
+    const TCHAR* pat;       /* Pointer to the name matching pattern */
+#endif
+} FF_DIR;
+
+
+
+/* File information structure (FILINFO) */
+
+typedef struct {
+    FSIZE_t fsize;          /* File size */
+    WORD    fdate;          /* Modified date */
+    WORD    ftime;          /* Modified time */
+    BYTE    fattrib;        /* File attribute */
+#if _USE_LFN != 0
+    TCHAR   altname[13];            /* Altenative file name */
+    TCHAR   fname[_MAX_LFN + 1];    /* Primary file name */
+#else
+    TCHAR   fname[13];      /* File name */
+#endif
+} FILINFO;
+
+
+
+/* File function return code (FRESULT) */
+
+typedef enum {
+    FR_OK = 0,              /* (0) Succeeded */
+    FR_DISK_ERR,            /* (1) A hard error occurred in the low level disk I/O layer */
+    FR_INT_ERR,             /* (2) Assertion failed */
+    FR_NOT_READY,           /* (3) The physical drive cannot work */
+    FR_NO_FILE,             /* (4) Could not find the file */
+    FR_NO_PATH,             /* (5) Could not find the path */
+    FR_INVALID_NAME,        /* (6) The path name format is invalid */
+    FR_DENIED,              /* (7) Access denied due to prohibited access or directory full */
+    FR_EXIST,               /* (8) Access denied due to prohibited access */
+    FR_INVALID_OBJECT,      /* (9) The file/directory object is invalid */
+    FR_WRITE_PROTECTED,     /* (10) The physical drive is write protected */
+    FR_INVALID_DRIVE,       /* (11) The logical drive number is invalid */
+    FR_NOT_ENABLED,         /* (12) The volume has no work area */
+    FR_NO_FILESYSTEM,       /* (13) There is no valid FAT volume */
+    FR_MKFS_ABORTED,        /* (14) The f_mkfs() aborted due to any problem */
+    FR_TIMEOUT,             /* (15) Could not get a grant to access the volume within defined period */
+    FR_LOCKED,              /* (16) The operation is rejected according to the file sharing policy */
+    FR_NOT_ENOUGH_CORE,     /* (17) LFN working buffer could not be allocated */
+    FR_TOO_MANY_OPEN_FILES, /* (18) Number of open files > _FS_LOCK */
+    FR_INVALID_PARAMETER    /* (19) Given parameter is invalid */
+} FRESULT;
+
+
+
+/*--------------------------------------------------------------*/
+/* FatFs module application interface                           */
+
+FRESULT f_open (FATFS *fs, FIL* fp, const TCHAR* path, BYTE mode);  /* Open or create a file */
+FRESULT f_close (FIL* fp);                                          /* Close an open file object */
+FRESULT f_read (FIL* fp, void* buff, UINT btr, UINT* br);           /* Read data from the file */
+FRESULT f_write (FIL* fp, const void* buff, UINT btw, UINT* bw);    /* Write data to the file */
+FRESULT f_lseek (FIL* fp, FSIZE_t ofs);                             /* Move file pointer of the file object */
+FRESULT f_truncate (FIL* fp);                                       /* Truncate the file */
+FRESULT f_sync (FIL* fp);                                           /* Flush cached data of the writing file */
+FRESULT f_opendir (FATFS *fs, FF_DIR* dp, const TCHAR* path);       /* Open a directory */
+FRESULT f_closedir (FF_DIR* dp);                                    /* Close an open directory */
+FRESULT f_readdir (FF_DIR* dp, FILINFO* fno);                       /* Read a directory item */
+FRESULT f_findfirst (FF_DIR* dp, FILINFO* fno, const TCHAR* path, const TCHAR* pattern); /* Find first file */
+FRESULT f_findnext (FF_DIR* dp, FILINFO* fno);                      /* Find next file */
+FRESULT f_mkdir (FATFS *fs, const TCHAR* path);                     /* Create a sub directory */
+FRESULT f_unlink (FATFS *fs, const TCHAR* path);                    /* Delete an existing file or directory */
+FRESULT f_rename (FATFS *fs, const TCHAR* path_old, const TCHAR* path_new); /* Rename/Move a file or directory */
+FRESULT f_stat (FATFS *fs, const TCHAR* path, FILINFO* fno);        /* Get file status */
+FRESULT f_chmod (FATFS *fs, const TCHAR* path, BYTE attr, BYTE mask); /* Change attribute of a file/dir */
+FRESULT f_utime (FATFS *fs, const TCHAR* path, const FILINFO* fno); /* Change timestamp of a file/dir */
+FRESULT f_chdir (FATFS *fs, const TCHAR* path);                     /* Change current directory */
+FRESULT f_getcwd (FATFS *fs, TCHAR* buff, UINT len);                /* Get current directory */
+FRESULT f_getfree (FATFS *fs, DWORD* nclst);                        /* Get number of free clusters on the drive */
+FRESULT f_getlabel (FATFS *fs, TCHAR* label, DWORD* vsn);           /* Get volume label */
+FRESULT f_setlabel (FATFS *fs, const TCHAR* label);                 /* Set volume label */
+FRESULT f_forward (FIL* fp, UINT(*func)(const BYTE*,UINT), UINT btf, UINT* bf); /* Forward data to the stream */
+FRESULT f_expand (FIL* fp, FSIZE_t szf, BYTE opt);                  /* Allocate a contiguous block to the file */
+FRESULT f_mount (FATFS* fs);                                        /* Mount/Unmount a logical drive */
+FRESULT f_umount (FATFS* fs);                                       /* Unmount a logical drive */
+FRESULT f_mkfs (FATFS *fs, BYTE opt, DWORD au, void* work, UINT len); /* Create a FAT volume */
+FRESULT f_fdisk (void *pdrv, const DWORD* szt, void* work);         /* Divide a physical drive into some partitions */
+
+#define f_eof(fp) ((int)((fp)->fptr == (fp)->obj.objsize))
+#define f_error(fp) ((fp)->err)
+#define f_tell(fp) ((fp)->fptr)
+#define f_size(fp) ((fp)->obj.objsize)
+#define f_rewind(fp) f_lseek((fp), 0)
+#define f_rewinddir(dp) f_readdir((dp), 0)
+
+#ifndef EOF
+#define EOF (-1)
+#endif
+
+
+
+
+/*--------------------------------------------------------------*/
+/* Additional user defined functions                            */
+
+/* RTC function */
+#if !_FS_READONLY && !_FS_NORTC
+DWORD get_fattime (void);
+#endif
+
+/* Unicode support functions */
+#if _USE_LFN != 0                       /* Unicode - OEM code conversion */
+WCHAR ff_convert (WCHAR chr, UINT dir); /* OEM-Unicode bidirectional conversion */
+WCHAR ff_wtoupper (WCHAR chr);          /* Unicode upper-case conversion */
+#if _USE_LFN == 3                       /* Memory functions */
+void* ff_memalloc (UINT msize);         /* Allocate memory block */
+void ff_memfree (void* mblock);         /* Free memory block */
+#endif
+#endif
+
+/* Sync functions */
+#if _FS_REENTRANT
+int ff_cre_syncobj (FATFS *fatfs, _SYNC_t* sobj); /* Create a sync object */
+int ff_req_grant (_SYNC_t sobj);                /* Lock sync object */
+void ff_rel_grant (_SYNC_t sobj);               /* Unlock sync object */
+int ff_del_syncobj (_SYNC_t sobj);              /* Delete a sync object */
+#endif
+
+
+
+
+/*--------------------------------------------------------------*/
+/* Flags and offset address                                     */
+
+
+/* File access mode and open method flags (3rd argument of f_open) */
+#define FA_READ             0x01
+#define FA_WRITE            0x02
+#define FA_OPEN_EXISTING    0x00
+#define FA_CREATE_NEW       0x04
+#define FA_CREATE_ALWAYS    0x08
+#define FA_OPEN_ALWAYS      0x10
+#define FA_OPEN_APPEND      0x30
+
+/* Fast seek controls (2nd argument of f_lseek) */
+#define CREATE_LINKMAP  ((FSIZE_t)0 - 1)
+
+/* Format options (2nd argument of f_mkfs) */
+#define FM_FAT      0x01
+#define FM_FAT32    0x02
+#define FM_EXFAT    0x04
+#define FM_ANY      0x07
+#define FM_SFD      0x08
+
+/* Filesystem type (FATFS.fs_type) */
+#define FS_FAT12    1
+#define FS_FAT16    2
+#define FS_FAT32    3
+#define FS_EXFAT    4
+
+/* File attribute bits for directory entry (FILINFO.fattrib) */
+#define AM_RDO  0x01    /* Read only */
+#define AM_HID  0x02    /* Hidden */
+#define AM_SYS  0x04    /* System */
+#define AM_DIR  0x10    /* Directory */
+#define AM_ARC  0x20    /* Archive */
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _FATFS */

lib/oofatfs/ffconf.h

@@ -0,0 +1,349 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * Original file from:
+ * FatFs - FAT file system module configuration file R0.12a (C)ChaN, 2016
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2013-2017 Damien P. George
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "py/mpconfig.h"
+
+/*---------------------------------------------------------------------------/
+/  FatFs - FAT file system module configuration file
+/---------------------------------------------------------------------------*/
+
+#define _FFCONF 68020   /* Revision ID */
+
+/*---------------------------------------------------------------------------/
+/ Function Configurations
+/---------------------------------------------------------------------------*/
+
+#define _FS_READONLY    0
+/* This option switches read-only configuration. (0:Read/Write or 1:Read-only)
+/  Read-only configuration removes writing API functions, f_write(), f_sync(),
+/  f_unlink(), f_mkdir(), f_chmod(), f_rename(), f_truncate(), f_getfree()
+/  and optional writing functions as well. */
+
+
+#define _FS_MINIMIZE    0
+/* This option defines minimization level to remove some basic API functions.
+/
+/   0: All basic functions are enabled.
+/   1: f_stat(), f_getfree(), f_unlink(), f_mkdir(), f_truncate() and f_rename()
+/      are removed.
+/   2: f_opendir(), f_readdir() and f_closedir() are removed in addition to 1.
+/   3: f_lseek() function is removed in addition to 2. */
+
+
+#define _USE_STRFUNC    0
+/* This option switches string functions, f_gets(), f_putc(), f_puts() and
+/  f_printf().
+/
+/  0: Disable string functions.
+/  1: Enable without LF-CRLF conversion.
+/  2: Enable with LF-CRLF conversion. */
+
+
+#define _USE_FIND       0
+/* This option switches filtered directory read functions, f_findfirst() and
+/  f_findnext(). (0:Disable, 1:Enable 2:Enable with matching altname[] too) */
+
+
+#define _USE_MKFS       1
+/* This option switches f_mkfs() function. (0:Disable or 1:Enable) */
+
+
+#define _USE_FASTSEEK   0
+/* This option switches fast seek function. (0:Disable or 1:Enable) */
+
+
+#define _USE_EXPAND     0
+/* This option switches f_expand function. (0:Disable or 1:Enable) */
+
+
+#define _USE_CHMOD      1
+/* This option switches attribute manipulation functions, f_chmod() and f_utime().
+/  (0:Disable or 1:Enable) Also _FS_READONLY needs to be 0 to enable this option. */
+
+
+#ifdef MICROPY_FATFS_USE_LABEL
+#define _USE_LABEL      (MICROPY_FATFS_USE_LABEL)
+#else
+#define _USE_LABEL      0
+#endif
+/* This option switches volume label functions, f_getlabel() and f_setlabel().
+/  (0:Disable or 1:Enable) */
+
+
+#define _USE_FORWARD    0
+/* This option switches f_forward() function. (0:Disable or 1:Enable) */
+
+
+/*---------------------------------------------------------------------------/
+/ Locale and Namespace Configurations
+/---------------------------------------------------------------------------*/
+
+#ifdef MICROPY_FATFS_LFN_CODE_PAGE
+#define _CODE_PAGE  (MICROPY_FATFS_LFN_CODE_PAGE)
+#else
+#define _CODE_PAGE  1
+#endif
+/* This option specifies the OEM code page to be used on the target system.
+/  Incorrect setting of the code page can cause a file open failure.
+/
+/   1   - ASCII (No extended character. Non-LFN cfg. only)
+/   437 - U.S.
+/   720 - Arabic
+/   737 - Greek
+/   771 - KBL
+/   775 - Baltic
+/   850 - Latin 1
+/   852 - Latin 2
+/   855 - Cyrillic
+/   857 - Turkish
+/   860 - Portuguese
+/   861 - Icelandic
+/   862 - Hebrew
+/   863 - Canadian French
+/   864 - Arabic
+/   865 - Nordic
+/   866 - Russian
+/   869 - Greek 2
+/   932 - Japanese (DBCS)
+/   936 - Simplified Chinese (DBCS)
+/   949 - Korean (DBCS)
+/   950 - Traditional Chinese (DBCS)
+*/
+
+
+#ifdef MICROPY_FATFS_ENABLE_LFN
+#define _USE_LFN    (MICROPY_FATFS_ENABLE_LFN)
+#else
+#define _USE_LFN    0
+#endif
+#ifdef MICROPY_FATFS_MAX_LFN
+#define _MAX_LFN    (MICROPY_FATFS_MAX_LFN)
+#else
+#define _MAX_LFN    255
+#endif
+/* The _USE_LFN switches the support of long file name (LFN).
+/
+/   0: Disable support of LFN. _MAX_LFN has no effect.
+/   1: Enable LFN with static working buffer on the BSS. Always NOT thread-safe.
+/   2: Enable LFN with dynamic working buffer on the STACK.
+/   3: Enable LFN with dynamic working buffer on the HEAP.
+/
+/  To enable the LFN, Unicode handling functions (option/unicode.c) must be added
+/  to the project. The working buffer occupies (_MAX_LFN + 1) * 2 bytes and
+/  additional 608 bytes at exFAT enabled. _MAX_LFN can be in range from 12 to 255.
+/  It should be set 255 to support full featured LFN operations.
+/  When use stack for the working buffer, take care on stack overflow. When use heap
+/  memory for the working buffer, memory management functions, ff_memalloc() and
+/  ff_memfree(), must be added to the project. */
+
+
+#define _LFN_UNICODE    0
+/* This option switches character encoding on the API. (0:ANSI/OEM or 1:UTF-16)
+/  To use Unicode string for the path name, enable LFN and set _LFN_UNICODE = 1.
+/  This option also affects behavior of string I/O functions. */
+
+
+#define _STRF_ENCODE    3
+/* When _LFN_UNICODE == 1, this option selects the character encoding ON THE FILE to
+/  be read/written via string I/O functions, f_gets(), f_putc(), f_puts and f_printf().
+/
+/  0: ANSI/OEM
+/  1: UTF-16LE
+/  2: UTF-16BE
+/  3: UTF-8
+/
+/  This option has no effect when _LFN_UNICODE == 0. */
+
+
+#ifdef MICROPY_FATFS_RPATH
+#define _FS_RPATH   (MICROPY_FATFS_RPATH)
+#else
+#define _FS_RPATH   0
+#endif
+/* This option configures support of relative path.
+/
+/   0: Disable relative path and remove related functions.
+/   1: Enable relative path. f_chdir() and f_chdrive() are available.
+/   2: f_getcwd() function is available in addition to 1.
+*/
+
+
+/*---------------------------------------------------------------------------/
+/ Drive/Volume Configurations
+/---------------------------------------------------------------------------*/
+
+#define _VOLUMES    1
+/* Number of volumes (logical drives) to be used. */
+
+
+#define _STR_VOLUME_ID  0
+#define _VOLUME_STRS    "RAM","NAND","CF","SD","SD2","USB","USB2","USB3"
+/* _STR_VOLUME_ID switches string support of volume ID.
+/  When _STR_VOLUME_ID is set to 1, also pre-defined strings can be used as drive
+/  number in the path name. _VOLUME_STRS defines the drive ID strings for each
+/  logical drives. Number of items must be equal to _VOLUMES. Valid characters for
+/  the drive ID strings are: A-Z and 0-9. */
+
+
+#ifdef MICROPY_FATFS_MULTI_PARTITION
+#define _MULTI_PARTITION    (MICROPY_FATFS_MULTI_PARTITION)
+#else
+#define _MULTI_PARTITION    0
+#endif
+/* This option switches support of multi-partition on a physical drive.
+/  By default (0), each logical drive number is bound to the same physical drive
+/  number and only an FAT volume found on the physical drive will be mounted.
+/  When multi-partition is enabled (1), each logical drive number can be bound to
+/  arbitrary physical drive and partition listed in the VolToPart[]. Also f_fdisk()
+/  funciton will be available. */
+
+
+#define _MIN_SS     512
+#ifdef MICROPY_FATFS_MAX_SS
+#define _MAX_SS     (MICROPY_FATFS_MAX_SS)
+#else
+#define _MAX_SS     512
+#endif
+/* These options configure the range of sector size to be supported. (512, 1024,
+/  2048 or 4096) Always set both 512 for most systems, all type of memory cards and
+/  harddisk. But a larger value may be required for on-board flash memory and some
+/  type of optical media. When _MAX_SS is larger than _MIN_SS, FatFs is configured
+/  to variable sector size and GET_SECTOR_SIZE command must be implemented to the
+/  disk_ioctl() function. */
+
+
+#define _USE_TRIM   0
+/* This option switches support of ATA-TRIM. (0:Disable or 1:Enable)
+/  To enable Trim function, also CTRL_TRIM command should be implemented to the
+/  disk_ioctl() function. */
+
+
+#define _FS_NOFSINFO    0
+/* If you need to know correct free space on the FAT32 volume, set bit 0 of this
+/  option, and f_getfree() function at first time after volume mount will force
+/  a full FAT scan. Bit 1 controls the use of last allocated cluster number.
+/
+/  bit0=0: Use free cluster count in the FSINFO if available.
+/  bit0=1: Do not trust free cluster count in the FSINFO.
+/  bit1=0: Use last allocated cluster number in the FSINFO if available.
+/  bit1=1: Do not trust last allocated cluster number in the FSINFO.
+*/
+
+
+
+/*---------------------------------------------------------------------------/
+/ System Configurations
+/---------------------------------------------------------------------------*/
+
+#define _FS_TINY    1
+/* This option switches tiny buffer configuration. (0:Normal or 1:Tiny)
+/  At the tiny configuration, size of file object (FIL) is reduced _MAX_SS bytes.
+/  Instead of private sector buffer eliminated from the file object, common sector
+/  buffer in the file system object (FATFS) is used for the file data transfer. */
+
+
+#ifdef MICROPY_FATFS_EXFAT
+#define _FS_EXFAT   (MICROPY_FATFS_EXFAT)
+#else
+#define _FS_EXFAT   0
+#endif
+/* This option switches support of exFAT file system. (0:Disable or 1:Enable)
+/  When enable exFAT, also LFN needs to be enabled. (_USE_LFN >= 1)
+/  Note that enabling exFAT discards C89 compatibility. */
+
+
+#ifdef MICROPY_FATFS_NORTC
+#define _FS_NORTC   (MICROPY_FATFS_NORTC)
+#else
+#define _FS_NORTC   0
+#endif
+#define _NORTC_MON  1
+#define _NORTC_MDAY 1
+#define _NORTC_YEAR 2016
+/* The option _FS_NORTC switches timestamp functiton. If the system does not have
+/  any RTC function or valid timestamp is not needed, set _FS_NORTC = 1 to disable
+/  the timestamp function. All objects modified by FatFs will have a fixed timestamp
+/  defined by _NORTC_MON, _NORTC_MDAY and _NORTC_YEAR in local time.
+/  To enable timestamp function (_FS_NORTC = 0), get_fattime() function need to be
+/  added to the project to get current time form real-time clock. _NORTC_MON,
+/  _NORTC_MDAY and _NORTC_YEAR have no effect.
+/  These options have no effect at read-only configuration (_FS_READONLY = 1). */
+
+
+#define _FS_LOCK    0
+/* The option _FS_LOCK switches file lock function to control duplicated file open
+/  and illegal operation to open objects. This option must be 0 when _FS_READONLY
+/  is 1.
+/
+/  0:  Disable file lock function. To avoid volume corruption, application program
+/      should avoid illegal open, remove and rename to the open objects.
+/  >0: Enable file lock function. The value defines how many files/sub-directories
+/      can be opened simultaneously under file lock control. Note that the file
+/      lock control is independent of re-entrancy. */
+
+
+#ifdef MICROPY_FATFS_REENTRANT
+#define _FS_REENTRANT   (MICROPY_FATFS_REENTRANT)
+#else
+#define _FS_REENTRANT   0
+#endif
+
+// milliseconds
+#ifdef MICROPY_FATFS_TIMEOUT
+#define _FS_TIMEOUT     (MICROPY_FATFS_TIMEOUT)
+#else
+#define _FS_TIMEOUT     1000
+#endif
+
+#ifdef MICROPY_FATFS_SYNC_T
+#define _SYNC_t         MICROPY_FATFS_SYNC_T
+#else
+#define _SYNC_t         HANDLE
+#endif
+/* The option _FS_REENTRANT switches the re-entrancy (thread safe) of the FatFs
+/  module itself. Note that regardless of this option, file access to different
+/  volume is always re-entrant and volume control functions, f_mount(), f_mkfs()
+/  and f_fdisk() function, are always not re-entrant. Only file/directory access
+/  to the same volume is under control of this function.
+/
+/   0: Disable re-entrancy. _FS_TIMEOUT and _SYNC_t have no effect.
+/   1: Enable re-entrancy. Also user provided synchronization handlers,
+/      ff_req_grant(), ff_rel_grant(), ff_del_syncobj() and ff_cre_syncobj()
+/      function, must be added to the project. Samples are available in
+/      option/syscall.c.
+/
+/  The _FS_TIMEOUT defines timeout period in unit of time tick.
+/  The _SYNC_t defines O/S dependent sync object type. e.g. HANDLE, ID, OS_EVENT*,
+/  SemaphoreHandle_t and etc.. A header file for O/S definitions needs to be
+/  included somewhere in the scope of ff.h. */
+
+/* #include <windows.h> // O/S definitions  */
+
+
+/*--- End of configuration options ---*/

lib/oofatfs/option/ccsbcs.c

@@ -0,0 +1,388 @@
+/*------------------------------------------------------------------------*/
+/* Unicode - Local code bidirectional converter  (C)ChaN, 2015            */
+/* (SBCS code pages)                                                      */
+/*------------------------------------------------------------------------*/
+/*  437   U.S.
+/   720   Arabic
+/   737   Greek
+/   771   KBL
+/   775   Baltic
+/   850   Latin 1
+/   852   Latin 2
+/   855   Cyrillic
+/   857   Turkish
+/   860   Portuguese
+/   861   Icelandic
+/   862   Hebrew
+/   863   Canadian French
+/   864   Arabic
+/   865   Nordic
+/   866   Russian
+/   869   Greek 2
+*/
+
+#include "../ff.h"
+
+
+#if _CODE_PAGE == 437
+#define _TBLDEF 1
+static
+const WCHAR Tbl[] = {   /*  CP437(0x80-0xFF) to Unicode conversion table */
+    0x00C7, 0x00FC, 0x00E9, 0x00E2, 0x00E4, 0x00E0, 0x00E5, 0x00E7, 0x00EA, 0x00EB, 0x00E8, 0x00EF, 0x00EE, 0x00EC, 0x00C4, 0x00C5,
+    0x00C9, 0x00E6, 0x00C6, 0x00F4, 0x00F6, 0x00F2, 0x00FB, 0x00F9, 0x00FF, 0x00D6, 0x00DC, 0x00A2, 0x00A3, 0x00A5, 0x20A7, 0x0192,
+    0x00E1, 0x00ED, 0x00F3, 0x00FA, 0x00F1, 0x00D1, 0x00AA, 0x00BA, 0x00BF, 0x2310, 0x00AC, 0x00BD, 0x00BC, 0x00A1, 0x00AB, 0x00BB,
+    0x2591, 0x2592, 0x2593, 0x2502, 0x2524, 0x2561, 0x2562, 0x2556, 0x2555, 0x2563, 0x2551, 0x2557, 0x255D, 0x255C, 0x255B, 0x2510,
+    0x2514, 0x2534, 0x252C, 0x251C, 0x2500, 0x253C, 0x255E, 0x255F, 0x255A, 0x2554, 0x2569, 0x2566, 0x2560, 0x2550, 0x256C, 0x2567,
+    0x2568, 0x2564, 0x2565, 0x2559, 0x2558, 0x2552, 0x2553, 0x256B, 0x256A, 0x2518, 0x250C, 0x2588, 0x2584, 0x258C, 0x2590, 0x2580,
+    0x03B1, 0x00DF, 0x0393, 0x03C0, 0x03A3, 0x03C3, 0x00B5, 0x03C4, 0x03A6, 0x0398, 0x03A9, 0x03B4, 0x221E, 0x03C6, 0x03B5, 0x2229,
+    0x2261, 0x00B1, 0x2265, 0x2264, 0x2320, 0x2321, 0x00F7, 0x2248, 0x00B0, 0x2219, 0x00B7, 0x221A, 0x207F, 0x00B2, 0x25A0, 0x00A0
+};
+
+#elif _CODE_PAGE == 720
+#define _TBLDEF 1
+static
+const WCHAR Tbl[] = {   /*  CP720(0x80-0xFF) to Unicode conversion table */
+    0x0000, 0x0000, 0x00E9, 0x00E2, 0x0000, 0x00E0, 0x0000, 0x00E7, 0x00EA, 0x00EB, 0x00E8, 0x00EF, 0x00EE, 0x0000, 0x0000, 0x0000,
+    0x0000, 0x0651, 0x0652, 0x00F4, 0x00A4, 0x0640, 0x00FB, 0x00F9, 0x0621, 0x0622, 0x0623, 0x0624, 0x00A3, 0x0625, 0x0626, 0x0627,
+    0x0628, 0x0629, 0x062A, 0x062B, 0x062C, 0x062D, 0x062E, 0x062F, 0x0630, 0x0631, 0x0632, 0x0633, 0x0634, 0x0635, 0x00AB, 0x00BB,
+    0x2591, 0x2592, 0x2593, 0x2502, 0x2524, 0x2561, 0x2562, 0x2556, 0x2555, 0x2563, 0x2551, 0x2557, 0x255D, 0x255C, 0x255B, 0x2510,
+    0x2514, 0x2534, 0x252C, 0x251C, 0x2500, 0x253C, 0x255E, 0x255F, 0x255A, 0x2554, 0x2569, 0x2566, 0x2560, 0x2550, 0x256C, 0x2567,
+    0x2568, 0x2564, 0x2565, 0x2559, 0x2558, 0x2552, 0x2553, 0x256B, 0x256A, 0x2518, 0x250C, 0x2588, 0x2584, 0x258C, 0x2590, 0x2580,
+    0x0636, 0x0637, 0x0638, 0x0639, 0x063A, 0x0641, 0x00B5, 0x0642, 0x0643, 0x0644, 0x0645, 0x0646, 0x0647, 0x0648, 0x0649, 0x064A,
+    0x2261, 0x064B, 0x064C, 0x064D, 0x064E, 0x064F, 0x0650, 0x2248, 0x00B0, 0x2219, 0x00B7, 0x221A, 0x207F, 0x00B2, 0x25A0, 0x00A0
+};
+
+#elif _CODE_PAGE == 737
+#define _TBLDEF 1
+static
+const WCHAR Tbl[] = {   /*  CP737(0x80-0xFF) to Unicode conversion table */
+    0x0391, 0x0392, 0x0393, 0x0394, 0x0395, 0x0396, 0x0397, 0x0398, 0x0399, 0x039A, 0x039B, 0x039C, 0x039D, 0x039E, 0x039F, 0x03A0,
+    0x03A1, 0x03A3, 0x03A4, 0x03A5, 0x03A6, 0x03A7, 0x03A8, 0x03A9, 0x03B1, 0x03B2, 0x03B3, 0x03B4, 0x03B5, 0x03B6, 0x03B7, 0x03B8,
+    0x03B9, 0x03BA, 0x03BB, 0x03BC, 0x03BD, 0x03BE, 0x03BF, 0x03C0, 0x03C1, 0x03C3, 0x03C2, 0x03C4, 0x03C5, 0x03C6, 0x03C7, 0x03C8,
+    0x2591, 0x2592, 0x2593, 0x2502, 0x2524, 0x2561, 0x2562, 0x2556, 0x2555, 0x2563, 0x2551, 0x2557, 0x255D, 0x255C, 0x255B, 0x2510,
+    0x2514, 0x2534, 0x252C, 0x251C, 0x2500, 0x253C, 0x255E, 0x255F, 0x255A, 0x2554, 0x2569, 0x2566, 0x2560, 0x2550, 0x256C, 0x2567,
+    0x2568, 0x2564, 0x2565, 0x2559, 0x2558, 0x2552, 0x2553, 0x256B, 0x256A, 0x2518, 0x250C, 0x2588, 0x2584, 0x258C, 0x2590, 0x2580,
+    0x03C9, 0x03AC, 0x03AD, 0x03AE, 0x03CA, 0x03AF, 0x03CC, 0x03CD, 0x03CB, 0x03CE, 0x0386, 0x0388, 0x0389, 0x038A, 0x038C, 0x038E,
+    0x038F, 0x00B1, 0x2265, 0x2264, 0x03AA, 0x03AB, 0x00F7, 0x2248, 0x00B0, 0x2219, 0x00B7, 0x221A, 0x207F, 0x00B2, 0x25A0, 0x00A0
+};
+
+#elif _CODE_PAGE == 771
+#define _TBLDEF 1
+static
+const WCHAR Tbl[] = {   /*  CP771(0x80-0xFF) to Unicode conversion table */
+    0x0410, 0x0411, 0x0412, 0x0413, 0x0414, 0x0415, 0x0416, 0x0417, 0x0418, 0x0419, 0x041A, 0x041B, 0x041C, 0x041D, 0x041E, 0x041F,
+    0x0420, 0x0421, 0x0422, 0x0423, 0x0424, 0x0425, 0x0426, 0x0427, 0x0428, 0x0429, 0x042A, 0x042B, 0x042C, 0x042D, 0x042E, 0x042F,
+    0x0430, 0x0431, 0x0432, 0x0433, 0x0434, 0x0435, 0x0436, 0x0437, 0x0438, 0x0439, 0x043A, 0x043B, 0x043C, 0x043D, 0x043E, 0x043F,
+    0x2591, 0x2592, 0x2593, 0x2502, 0x2524, 0x2561, 0x2562, 0x2556, 0x2555, 0x2563, 0x2551, 0x2557, 0x255D, 0x255C, 0x2558, 0x2510,
+    0x2514, 0x2534, 0x252C, 0x251C, 0x2500, 0x253C, 0x255E, 0x255F, 0x255A, 0x2554, 0x2569, 0x2566, 0x2560, 0x2550, 0x256C, 0x2567,
+    0x2568, 0x2564, 0x2565, 0x2559, 0x2558, 0x2552, 0x2553, 0x256B, 0x256A, 0x2518, 0x250C, 0x2588, 0x0104, 0x0105, 0x010C, 0x010D,
+    0x0440, 0x0441, 0x0442, 0x0443, 0x0444, 0x0445, 0x0446, 0x0447, 0x0448, 0x0449, 0x044A, 0x044B, 0x044C, 0x044D, 0x044E, 0x044F,
+    0x0118, 0x0119, 0x0116, 0x0117, 0x012E, 0x012F, 0x0160, 0x0161, 0x0172, 0x0173, 0x016A, 0x016B, 0x017D, 0x017E, 0x25A0, 0x00A0
+};
+
+#elif _CODE_PAGE == 775
+#define _TBLDEF 1
+static
+const WCHAR Tbl[] = {   /*  CP775(0x80-0xFF) to Unicode conversion table */
+    0x0106, 0x00FC, 0x00E9, 0x0101, 0x00E4, 0x0123, 0x00E5, 0x0107, 0x0142, 0x0113, 0x0156, 0x0157, 0x012B, 0x0179, 0x00C4, 0x00C5,
+    0x00C9, 0x00E6, 0x00C6, 0x014D, 0x00F6, 0x0122, 0x00A2, 0x015A, 0x015B, 0x00D6, 0x00DC, 0x00F8, 0x00A3, 0x00D8, 0x00D7, 0x00A4,
+    0x0100, 0x012A, 0x00F3, 0x017B, 0x017C, 0x017A, 0x201D, 0x00A6, 0x00A9, 0x00AE, 0x00AC, 0x00BD, 0x00BC, 0x0141, 0x00AB, 0x00BB,
+    0x2591, 0x2592, 0x2593, 0x2502, 0x2524, 0x0104, 0x010C, 0x0118, 0x0116, 0x2563, 0x2551, 0x2557, 0x255D, 0x012E, 0x0160, 0x2510,
+    0x2514, 0x2534, 0x252C, 0x251C, 0x2500, 0x253C, 0x0172, 0x016A, 0x255A, 0x2554, 0x2569, 0x2566, 0x2560, 0x2550, 0x256C, 0x017D,
+    0x0105, 0x010D, 0x0119, 0x0117, 0x012F, 0x0161, 0x0173, 0x016B, 0x017E, 0x2518, 0x250C, 0x2588, 0x2584, 0x258C, 0x2590, 0x2580,
+    0x00D3, 0x00DF, 0x014C, 0x0143, 0x00F5, 0x00D5, 0x00B5, 0x0144, 0x0136, 0x0137, 0x013B, 0x013C, 0x0146, 0x0112, 0x0145, 0x2019,
+    0x00AD, 0x00B1, 0x201C, 0x00BE, 0x00B6, 0x00A7, 0x00F7, 0x201E, 0x00B0, 0x2219, 0x00B7, 0x00B9, 0x00B3, 0x00B2, 0x25A0, 0x00A0
+};
+
+#elif _CODE_PAGE == 850
+#define _TBLDEF 1
+static
+const WCHAR Tbl[] = {   /*  CP850(0x80-0xFF) to Unicode conversion table */
+    0x00C7, 0x00FC, 0x00E9, 0x00E2, 0x00E4, 0x00E0, 0x00E5, 0x00E7, 0x00EA, 0x00EB, 0x00E8, 0x00EF, 0x00EE, 0x00EC, 0x00C4, 0x00C5,
+    0x00C9, 0x00E6, 0x00C6, 0x00F4, 0x00F6, 0x00F2, 0x00FB, 0x00F9, 0x00FF, 0x00D6, 0x00DC, 0x00F8, 0x00A3, 0x00D8, 0x00D7, 0x0192,
+    0x00E1, 0x00ED, 0x00F3, 0x00FA, 0x00F1, 0x00D1, 0x00AA, 0x00BA, 0x00BF, 0x00AE, 0x00AC, 0x00BD, 0x00BC, 0x00A1, 0x00AB, 0x00BB,
+    0x2591, 0x2592, 0x2593, 0x2502, 0x2524, 0x00C1, 0x00C2, 0x00C0, 0x00A9, 0x2563, 0x2551, 0x2557, 0x255D, 0x00A2, 0x00A5, 0x2510,
+    0x2514, 0x2534, 0x252C, 0x251C, 0x2500, 0x253C, 0x00E3, 0x00C3, 0x255A, 0x2554, 0x2569, 0x2566, 0x2560, 0x2550, 0x256C, 0x00A4,
+    0x00F0, 0x00D0, 0x00CA, 0x00CB, 0x00C8, 0x0131, 0x00CD, 0x00CE, 0x00CF, 0x2518, 0x250C, 0x2588, 0x2584, 0x00A6, 0x00CC, 0x2580,
+    0x00D3, 0x00DF, 0x00D4, 0x00D2, 0x00F5, 0x00D5, 0x00B5, 0x00FE, 0x00DE, 0x00DA, 0x00DB, 0x00D9, 0x00FD, 0x00DD, 0x00AF, 0x00B4,
+    0x00AD, 0x00B1, 0x2017, 0x00BE, 0x00B6, 0x00A7, 0x00F7, 0x00B8, 0x00B0, 0x00A8, 0x00B7, 0x00B9, 0x00B3, 0x00B2, 0x25A0, 0x00A0
+};
+
+#elif _CODE_PAGE == 852
+#define _TBLDEF 1
+static
+const WCHAR Tbl[] = {   /*  CP852(0x80-0xFF) to Unicode conversion table */
+    0x00C7, 0x00FC, 0x00E9, 0x00E2, 0x00E4, 0x016F, 0x0107, 0x00E7, 0x0142, 0x00EB, 0x0150, 0x0151, 0x00EE, 0x0179, 0x00C4, 0x0106,
+    0x00C9, 0x0139, 0x013A, 0x00F4, 0x00F6, 0x013D, 0x013E, 0x015A, 0x015B, 0x00D6, 0x00DC, 0x0164, 0x0165, 0x0141, 0x00D7, 0x010D,
+    0x00E1, 0x00ED, 0x00F3, 0x00FA, 0x0104, 0x0105, 0x017D, 0x017E, 0x0118, 0x0119, 0x00AC, 0x017A, 0x010C, 0x015F, 0x00AB, 0x00BB,
+    0x2591, 0x2592, 0x2593, 0x2502, 0x2524, 0x00C1, 0x00C2, 0x011A, 0x015E, 0x2563, 0x2551, 0x2557, 0x255D, 0x017B, 0x017C, 0x2510,
+    0x2514, 0x2534, 0x252C, 0x251C, 0x2500, 0x253C, 0x0102, 0x0103, 0x255A, 0x2554, 0x2569, 0x2566, 0x2560, 0x2550, 0x256C, 0x00A4,
+    0x0111, 0x0110, 0x010E, 0x00CB, 0x010F, 0x0147, 0x00CD, 0x00CE, 0x011B, 0x2518, 0x250C, 0x2588, 0x2584, 0x0162, 0x016E, 0x2580,
+    0x00D3, 0x00DF, 0x00D4, 0x0143, 0x0144, 0x0148, 0x0160, 0x0161, 0x0154, 0x00DA, 0x0155, 0x0170, 0x00FD, 0x00DD, 0x0163, 0x00B4,
+    0x00AD, 0x02DD, 0x02DB, 0x02C7, 0x02D8, 0x00A7, 0x00F7, 0x00B8, 0x00B0, 0x00A8, 0x02D9, 0x0171, 0x0158, 0x0159, 0x25A0, 0x00A0
+};
+
+#elif _CODE_PAGE == 855
+#define _TBLDEF 1
+static
+const WCHAR Tbl[] = {   /*  CP855(0x80-0xFF) to Unicode conversion table */
+    0x0452, 0x0402, 0x0453, 0x0403, 0x0451, 0x0401, 0x0454, 0x0404, 0x0455, 0x0405, 0x0456, 0x0406, 0x0457, 0x0407, 0x0458, 0x0408,
+    0x0459, 0x0409, 0x045A, 0x040A, 0x045B, 0x040B, 0x045C, 0x040C, 0x045E, 0x040E, 0x045F, 0x040F, 0x044E, 0x042E, 0x044A, 0x042A,
+    0x0430, 0x0410, 0x0431, 0x0411, 0x0446, 0x0426, 0x0434, 0x0414, 0x0435, 0x0415, 0x0444, 0x0424, 0x0433, 0x0413, 0x00AB, 0x00BB,
+    0x2591, 0x2592, 0x2593, 0x2502, 0x2524, 0x0445, 0x0425, 0x0438, 0x0418, 0x2563, 0x2551, 0x2557, 0x255D, 0x0439, 0x0419, 0x2510,
+    0x2514, 0x2534, 0x252C, 0x251C, 0x2500, 0x253C, 0x043A, 0x041A, 0x255A, 0x2554, 0x2569, 0x2566, 0x2560, 0x2550, 0x256C, 0x00A4,
+    0x043B, 0x041B, 0x043C, 0x041C, 0x043D, 0x041D, 0x043E, 0x041E, 0x043F, 0x2518, 0x250C, 0x2588, 0x2584, 0x041F, 0x044F, 0x2580,
+    0x042F, 0x0440, 0x0420, 0x0441, 0x0421, 0x0442, 0x0422, 0x0443, 0x0423, 0x0436, 0x0416, 0x0432, 0x0412, 0x044C, 0x042C, 0x2116,
+    0x00AD, 0x044B, 0x042B, 0x0437, 0x0417, 0x0448, 0x0428, 0x044D, 0x042D, 0x0449, 0x0429, 0x0447, 0x0427, 0x00A7, 0x25A0, 0x00A0
+};
+
+#elif _CODE_PAGE == 857
+#define _TBLDEF 1
+static
+const WCHAR Tbl[] = {   /*  CP857(0x80-0xFF) to Unicode conversion table */
+    0x00C7, 0x00FC, 0x00E9, 0x00E2, 0x00E4, 0x00E0, 0x00E5, 0x00E7, 0x00EA, 0x00EB, 0x00E8, 0x00EF, 0x00EE, 0x0131, 0x00C4, 0x00C5,
+    0x00C9, 0x00E6, 0x00C6, 0x00F4, 0x00F6, 0x00F2, 0x00FB, 0x00F9, 0x0130, 0x00D6, 0x00DC, 0x00F8, 0x00A3, 0x00D8, 0x015E, 0x015F,
+    0x00E1, 0x00ED, 0x00F3, 0x00FA, 0x00F1, 0x00D1, 0x011E, 0x011F, 0x00BF, 0x00AE, 0x00AC, 0x00BD, 0x00BC, 0x00A1, 0x00AB, 0x00BB,
+    0x2591, 0x2592, 0x2593, 0x2502, 0x2524, 0x00C1, 0x00C2, 0x00C0, 0x00A9, 0x2563, 0x2551, 0x2557, 0x255D, 0x00A2, 0x00A5, 0x2510,
+    0x2514, 0x2534, 0x252C, 0x251C, 0x2500, 0x253C, 0x00E3, 0x00C3, 0x255A, 0x2554, 0x2569, 0x2566, 0x2560, 0x2550, 0x256C, 0x00A4,
+    0x00BA, 0x00AA, 0x00CA, 0x00CB, 0x00C8, 0x0000, 0x00CD, 0x00CE, 0x00CF, 0x2518, 0x250C, 0x2588, 0x2584, 0x00A6, 0x00CC, 0x2580,
+    0x00D3, 0x00DF, 0x00D4, 0x00D2, 0x00F5, 0x00D5, 0x00B5, 0x0000, 0x00D7, 0x00DA, 0x00DB, 0x00D9, 0x00EC, 0x00FF, 0x00AF, 0x00B4,
+    0x00AD, 0x00B1, 0x0000, 0x00BE, 0x00B6, 0x00A7, 0x00F7, 0x00B8, 0x00B0, 0x00A8, 0x00B7, 0x00B9, 0x00B3, 0x00B2, 0x25A0, 0x00A0
+};
+
+#elif _CODE_PAGE == 860
+#define _TBLDEF 1
+static
+const WCHAR Tbl[] = {   /*  CP860(0x80-0xFF) to Unicode conversion table */
+    0x00C7, 0x00FC, 0x00E9, 0x00E2, 0x00E3, 0x00E0, 0x00C1, 0x00E7, 0x00EA, 0x00CA, 0x00E8, 0x00CD, 0x00D4, 0x00EC, 0x00C3, 0x00C2,
+    0x00C9, 0x00C0, 0x00C8, 0x00F4, 0x00F5, 0x00F2, 0x00DA, 0x00F9, 0x00CC, 0x00D5, 0x00DC, 0x00A2, 0x00A3, 0x00D9, 0x20A7, 0x00D3,
+    0x00E1, 0x00ED, 0x00F3, 0x00FA, 0x00F1, 0x00D1, 0x00AA, 0x00BA, 0x00BF, 0x00D2, 0x00AC, 0x00BD, 0x00BC, 0x00A1, 0x00AB, 0x00BB,
+    0x2591, 0x2592, 0x2593, 0x2502, 0x2524, 0x2561, 0x2562, 0x2556, 0x2555, 0x2563, 0x2551, 0x2557, 0x255D, 0x255C, 0x2558, 0x2510,
+    0x2514, 0x2534, 0x252C, 0x251C, 0x2500, 0x253C, 0x255E, 0x255F, 0x255A, 0x2554, 0x2569, 0x2566, 0x2560, 0x2550, 0x256C, 0x2567,
+    0x2568, 0x2564, 0x2565, 0x2559, 0x2558, 0x2552, 0x2553, 0x256B, 0x256A, 0x2518, 0x250C, 0x2588, 0x2584, 0x258C, 0x2590, 0x2580,
+    0x03B1, 0x00DF, 0x0393, 0x03C0, 0x03A3, 0x03C3, 0x00B5, 0x03C4, 0x03A6, 0x0398, 0x03A9, 0x03B4, 0x221E, 0x03C6, 0x03B5, 0x2229,
+    0x2261, 0x00B1, 0x2265, 0x2264, 0x2320, 0x2321, 0x00F7, 0x2248, 0x00B0, 0x2219, 0x00B7, 0x221A, 0x207F, 0x00B2, 0x25A0, 0x00A0
+};
+
+#elif _CODE_PAGE == 861
+#define _TBLDEF 1
+static
+const WCHAR Tbl[] = {   /*  CP861(0x80-0xFF) to Unicode conversion table */
+    0x00C7, 0x00FC, 0x00E9, 0x00E2, 0x00E4, 0x00E0, 0x00E6, 0x00E7, 0x00EA, 0x00EB, 0x00E8, 0x00D0, 0x00F0, 0x00DE, 0x00C4, 0x00C5,
+    0x00C9, 0x00E6, 0x00C6, 0x00F4, 0x00F6, 0x00FE, 0x00FB, 0x00DD, 0x00FD, 0x00D6, 0x00DC, 0x00F8, 0x00A3, 0x00D8, 0x20A7, 0x0192,
+    0x00E1, 0x00ED, 0x00F3, 0x00FA, 0x00C1, 0x00CD, 0x00D3, 0x00DA, 0x00BF, 0x2310, 0x00AC, 0x00BD, 0x00BC, 0x00A1, 0x00AB, 0x00BB,
+    0x2591, 0x2592, 0x2593, 0x2502, 0x2524, 0x2561, 0x2562, 0x2556, 0x2555, 0x2563, 0x2551, 0x2557, 0x255D, 0x255C, 0x255B, 0x2510,
+    0x2514, 0x2534, 0x252C, 0x251C, 0x2500, 0x253C, 0x255E, 0x255F, 0x255A, 0x2554, 0x2569, 0x2566, 0x2560, 0x2550, 0x256C, 0x2567,
+    0x2568, 0x2564, 0x2565, 0x2559, 0x2558, 0x2552, 0x2553, 0x256B, 0x256A, 0x2518, 0x250C, 0x2588, 0x2584, 0x258C, 0x2590, 0x2580,
+    0x03B1, 0x00DF, 0x0393, 0x03C0, 0x03A3, 0x03C3, 0x00B5, 0x03C4, 0x03A6, 0x0398, 0x03A9, 0x03B4, 0x221E, 0x03C6, 0x03B5, 0x2229,
+    0x2261, 0x00B1, 0x2265, 0x2264, 0x2320, 0x2321, 0x00F7, 0x2248, 0x00B0, 0x2219, 0x00B7, 0x221A, 0x207F, 0x00B2, 0x25A0, 0x00A0
+};
+
+#elif _CODE_PAGE == 862
+#define _TBLDEF 1
+static
+const WCHAR Tbl[] = {   /*  CP862(0x80-0xFF) to Unicode conversion table */
+    0x05D0, 0x05D1, 0x05D2, 0x05D3, 0x05D4, 0x05D5, 0x05D6, 0x05D7, 0x05D8, 0x05D9, 0x05DA, 0x05DB, 0x05DC, 0x05DD, 0x05DE, 0x05DF,
+    0x05E0, 0x05E1, 0x05E2, 0x05E3, 0x05E4, 0x05E5, 0x05E6, 0x05E7, 0x05E8, 0x05E9, 0x05EA, 0x00A2, 0x00A3, 0x00A5, 0x20A7, 0x0192,
+    0x00E1, 0x00ED, 0x00F3, 0x00FA, 0x00F1, 0x00D1, 0x00AA, 0x00BA, 0x00BF, 0x2310, 0x00AC, 0x00BD, 0x00BC, 0x00A1, 0x00AB, 0x00BB,
+    0x2591, 0x2592, 0x2593, 0x2502, 0x2524, 0x2561, 0x2562, 0x2556, 0x2555, 0x2563, 0x2551, 0x2557, 0x255D, 0x255C, 0x255B, 0x2510,
+    0x2514, 0x2534, 0x252C, 0x251C, 0x2500, 0x253C, 0x255E, 0x255F, 0x255A, 0x2554, 0x2569, 0x2566, 0x2560, 0x2550, 0x256C, 0x2567,
+    0x2568, 0x2564, 0x2565, 0x2559, 0x2558, 0x2552, 0x2553, 0x256B, 0x256A, 0x2518, 0x250C, 0x2588, 0x2584, 0x258C, 0x2590, 0x2580,
+    0x03B1, 0x00DF, 0x0393, 0x03C0, 0x03A3, 0x03C3, 0x00B5, 0x03C4, 0x03A6, 0x0398, 0x03A9, 0x03B4, 0x221E, 0x03C6, 0x03B5, 0x2229,
+    0x2261, 0x00B1, 0x2265, 0x2264, 0x2320, 0x2321, 0x00F7, 0x2248, 0x00B0, 0x2219, 0x00B7, 0x221A, 0x207F, 0x00B2, 0x25A0, 0x00A0
+};
+
+#elif _CODE_PAGE == 863
+#define _TBLDEF 1
+static
+const WCHAR Tbl[] = {   /*  CP863(0x80-0xFF) to Unicode conversion table */
+    0x00C7, 0x00FC, 0x00E9, 0x00E2, 0x00C2, 0x00E0, 0x00B6, 0x00E7, 0x00EA, 0x00EB, 0x00E8, 0x00EF, 0x00EE, 0x00EC, 0x2017, 0x00C0,
+    0x00C9, 0x00C8, 0x00CA, 0x00F4, 0x00CB, 0x00CF, 0x00FB, 0x00F9, 0x00A4, 0x00D4, 0x00DC, 0x00A2, 0x00A3, 0x00D9, 0x00DB, 0x0192,
+    0x00A6, 0x00B4, 0x00F3, 0x00FA, 0x00A8, 0x00BB, 0x00B3, 0x00AF, 0x00CE, 0x3210, 0x00AC, 0x00BD, 0x00BC, 0x00BE, 0x00AB, 0x00BB,
+    0x2591, 0x2592, 0x2593, 0x2502, 0x2524, 0x2561, 0x2562, 0x2556, 0x2555, 0x2563, 0x2551, 0x2557, 0x255D, 0x255C, 0x255B, 0x2510,
+    0x2514, 0x2534, 0x252C, 0x251C, 0x2500, 0x253C, 0x255E, 0x255F, 0x255A, 0x2554, 0x2569, 0x2566, 0x2560, 0x2550, 0x256C, 0x2567,
+    0x2568, 0x2564, 0x2565, 0x2559, 0x2558, 0x2552, 0x2553, 0x256B, 0x256A, 0x2518, 0x250C, 0x2588, 0x2584, 0x258C, 0x2590, 0x2580,
+    0x03B1, 0x00DF, 0x0393, 0x03C0, 0x03A3, 0x03C3, 0x00B5, 0x03C4, 0x03A6, 0x0398, 0x03A9, 0x03B4, 0x221E, 0x03C6, 0x03B5, 0x2219,
+    0x2261, 0x00B1, 0x2265, 0x2264, 0x2320, 0x2321, 0x00F7, 0x2248, 0x00B0, 0x2219, 0x00B7, 0x221A, 0x207F, 0x00B2, 0x25A0, 0x00A0
+};
+
+#elif _CODE_PAGE == 864
+#define _TBLDEF 1
+static
+const WCHAR Tbl[] = {   /*  CP864(0x80-0xFF) to Unicode conversion table */
+    0x00B0, 0x00B7, 0x2219, 0x221A, 0x2592, 0x2500, 0x2502, 0x253C, 0x2524, 0x252C, 0x251C, 0x2534, 0x2510, 0x250C, 0x2514, 0x2518,
+    0x03B2, 0x221E, 0x03C6, 0x00B1, 0x00BD, 0x00BC, 0x2248, 0x00AB, 0x00BB, 0xFEF7, 0xFEF8, 0x0000, 0x0000, 0xFEFB, 0xFEFC, 0x0000,
+    0x00A0, 0x00AD, 0xFE82, 0x00A3, 0x00A4, 0xFE84, 0x0000, 0x20AC, 0xFE8E, 0xFE8F, 0xFE95, 0xFE99, 0x060C, 0xFE9D, 0xFEA1, 0xFEA5,
+    0x0660, 0x0661, 0x0662, 0x0663, 0x0664, 0x0665, 0x0666, 0x0667, 0x0668, 0x0669, 0xFED1, 0x061B, 0xFEB1, 0xFEB5, 0xFEB9, 0x061F,
+    0x00A2, 0xFE80, 0xFE81, 0xFE83, 0xFE85, 0xFECA, 0xFE8B, 0xFE8D, 0xFE91, 0xFE93, 0xFE97, 0xFE9B, 0xFE9F, 0xFEA3, 0xFEA7, 0xFEA9,
+    0xFEAB, 0xFEAD, 0xFEAF, 0xFEB3, 0xFEB7, 0xFEBB, 0xFEBF, 0xFEC1, 0xFEC5, 0xFECB, 0xFECF, 0x00A6, 0x00AC, 0x00F7, 0x00D7, 0xFEC9,
+    0x0640, 0xFED3, 0xFED7, 0xFEDB, 0xFEDF, 0xFEE3, 0xFEE7, 0xFEEB, 0xFEED, 0xFEEF, 0xFEF3, 0xFEBD, 0xFECC, 0xFECE, 0xFECD, 0xFEE1,
+    0xFE7D, 0x0651, 0xFEE5, 0xFEE9, 0xFEEC, 0xFEF0, 0xFEF2, 0xFED0, 0xFED5, 0xFEF5, 0xFEF6, 0xFEDD, 0xFED9, 0xFEF1, 0x25A0, 0x0000
+};
+
+#elif _CODE_PAGE == 865
+#define _TBLDEF 1
+static
+const WCHAR Tbl[] = {   /*  CP865(0x80-0xFF) to Unicode conversion table */
+    0x00C7, 0x00FC, 0x00E9, 0x00E2, 0x00E4, 0x00E0, 0x00E5, 0x00E7, 0x00EA, 0x00EB, 0x00E8, 0x00EF, 0x00EE, 0x00EC, 0x00C4, 0x00C5,
+    0x00C5, 0x00E6, 0x00C6, 0x00F4, 0x00F6, 0x00F2, 0x00FB, 0x00F9, 0x00FF, 0x00D6, 0x00DC, 0x00F8, 0x00A3, 0x00D8, 0x20A7, 0x0192,
+    0x00E1, 0x00ED, 0x00F3, 0x00FA, 0x00F1, 0x00D1, 0x00AA, 0x00BA, 0x00BF, 0x2310, 0x00AC, 0x00BD, 0x00BC, 0x00A1, 0x00AB, 0x00A4,
+    0x2591, 0x2592, 0x2593, 0x2502, 0x2524, 0x2561, 0x2562, 0x2556, 0x2555, 0x2563, 0x2551, 0x2557, 0x255D, 0x255C, 0x2558, 0x2510,
+    0x2514, 0x2534, 0x252C, 0x251C, 0x2500, 0x253C, 0x255E, 0x255F, 0x255A, 0x2554, 0x2569, 0x2566, 0x2560, 0x2550, 0x256C, 0x2567,
+    0x2568, 0x2564, 0x2565, 0x2559, 0x2558, 0x2552, 0x2553, 0x256B, 0x256A, 0x2518, 0x250C, 0x2588, 0x2584, 0x258C, 0x2590, 0x2580,
+    0x03B1, 0x00DF, 0x0393, 0x03C0, 0x03A3, 0x03C3, 0x00B5, 0x03C4, 0x03A6, 0x0398, 0x03A9, 0x03B4, 0x221E, 0x03C6, 0x03B5, 0x2229,
+    0x2261, 0x00B1, 0x2265, 0x2264, 0x2320, 0x2321, 0x00F7, 0x2248, 0x00B0, 0x2219, 0x00B7, 0x221A, 0x207F, 0x00B2, 0x25A0, 0x00A0
+};
+
+#elif _CODE_PAGE == 866
+#define _TBLDEF 1
+static
+const WCHAR Tbl[] = {   /*  CP866(0x80-0xFF) to Unicode conversion table */
+    0x0410, 0x0411, 0x0412, 0x0413, 0x0414, 0x0415, 0x0416, 0x0417, 0x0418, 0x0419, 0x041A, 0x041B, 0x041C, 0x041D, 0x041E, 0x041F,
+    0x0420, 0x0421, 0x0422, 0x0423, 0x0424, 0x0425, 0x0426, 0x0427, 0x0428, 0x0429, 0x042A, 0x042B, 0x042C, 0x042D, 0x042E, 0x042F,
+    0x0430, 0x0431, 0x0432, 0x0433, 0x0434, 0x0435, 0x0436, 0x0437, 0x0438, 0x0439, 0x043A, 0x043B, 0x043C, 0x043D, 0x043E, 0x043F,
+    0x2591, 0x2592, 0x2593, 0x2502, 0x2524, 0x2561, 0x2562, 0x2556, 0x2555, 0x2563, 0x2551, 0x2557, 0x255D, 0x255C, 0x255B, 0x2510,
+    0x2514, 0x2534, 0x252C, 0x251C, 0x2500, 0x253C, 0x255E, 0x255F, 0x255A, 0x2554, 0x2569, 0x2566, 0x2560, 0x2550, 0x256C, 0x2567,
+    0x2568, 0x2564, 0x2565, 0x2559, 0x2558, 0x2552, 0x2553, 0x256B, 0x256A, 0x2518, 0x250C, 0x2588, 0x2584, 0x258C, 0x2590, 0x2580,
+    0x0440, 0x0441, 0x0442, 0x0443, 0x0444, 0x0445, 0x0446, 0x0447, 0x0448, 0x0449, 0x044A, 0x044B, 0x044C, 0x044D, 0x044E, 0x044F,
+    0x0401, 0x0451, 0x0404, 0x0454, 0x0407, 0x0457, 0x040E, 0x045E, 0x00B0, 0x2219, 0x00B7, 0x221A, 0x2116, 0x00A4, 0x25A0, 0x00A0
+};
+
+#elif _CODE_PAGE == 869
+#define _TBLDEF 1
+static
+const WCHAR Tbl[] = {   /*  CP869(0x80-0xFF) to Unicode conversion table */
+    0x00B7, 0x00B7, 0x00B7, 0x00B7, 0x00B7, 0x00B7, 0x0386, 0x00B7, 0x00B7, 0x00AC, 0x00A6, 0x2018, 0x2019, 0x0388, 0x2015, 0x0389,
+    0x038A, 0x03AA, 0x038C, 0x00B7, 0x00B7, 0x038E, 0x03AB, 0x00A9, 0x038F, 0x00B2, 0x00B3, 0x03AC, 0x00A3, 0x03AD, 0x03AE, 0x03AF,
+    0x03CA, 0x0390, 0x03CC, 0x03CD, 0x0391, 0x0392, 0x0393, 0x0394, 0x0395, 0x0396, 0x0397, 0x00BD, 0x0398, 0x0399, 0x00AB, 0x00BB,
+    0x2591, 0x2592, 0x2593, 0x2502, 0x2524, 0x039A, 0x039B, 0x039C, 0x039D, 0x2563, 0x2551, 0x2557, 0x255D, 0x039E, 0x039F, 0x2510,
+    0x2514, 0x2534, 0x252C, 0x251C, 0x2500, 0x253C, 0x0A30, 0x03A1, 0x255A, 0x2554, 0x2569, 0x2566, 0x2560, 0x2550, 0x256C, 0x03A3,
+    0x03A4, 0x03A5, 0x03A6, 0x03A7, 0x03A8, 0x03A9, 0x03B1, 0x03B2, 0x03B3, 0x2518, 0x250C, 0x2588, 0x2584, 0x03B4, 0x03B5, 0x2580,
+    0x03B6, 0x03B7, 0x03B8, 0x03B9, 0x03BA, 0x03BB, 0x03BC, 0x03BD, 0x03BE, 0x03BF, 0x03C0, 0x03C1, 0x03C3, 0x03C2, 0x03C4, 0x0384,
+    0x00AD, 0x00B1, 0x03C5, 0x03C6, 0x03C7, 0x00A7, 0x03C8, 0x0385, 0x00B0, 0x00A8, 0x03C9, 0x03CB, 0x03B0, 0x03CE, 0x25A0, 0x00A0
+};
+
+#endif
+
+
+#if !_TBLDEF || !_USE_LFN
+#error This file is not needed at current configuration. Remove from the project.
+#endif
+
+
+
+
+WCHAR ff_convert (  /* Converted character, Returns zero on error */
+    WCHAR   chr,    /* Character code to be converted */
+    UINT    dir     /* 0: Unicode to OEM code, 1: OEM code to Unicode */
+)
+{
+    WCHAR c;
+
+
+    if (chr < 0x80) {   /* ASCII */
+        c = chr;
+
+    } else {
+        if (dir) {      /* OEM code to Unicode */
+            c = (chr >= 0x100) ? 0 : Tbl[chr - 0x80];
+
+        } else {        /* Unicode to OEM code */
+            for (c = 0; c < 0x80; c++) {
+                if (chr == Tbl[c]) break;
+            }
+            c = (c + 0x80) & 0xFF;
+        }
+    }
+
+    return c;
+}
+
+
+
+WCHAR ff_wtoupper ( /* Returns upper converted character */
+    WCHAR chr       /* Unicode character to be upper converted (BMP only) */
+)
+{
+    /* Compressed upper conversion table */
+    static const WCHAR cvt1[] = {   /* U+0000 - U+0FFF */
+        /* Basic Latin */
+        0x0061,0x031A,
+        /* Latin-1 Supplement */
+        0x00E0,0x0317,  0x00F8,0x0307,  0x00FF,0x0001,0x0178,
+        /* Latin Extended-A */
+        0x0100,0x0130,  0x0132,0x0106,  0x0139,0x0110,  0x014A,0x012E,  0x0179,0x0106,
+        /* Latin Extended-B */
+        0x0180,0x004D,0x0243,0x0181,0x0182,0x0182,0x0184,0x0184,0x0186,0x0187,0x0187,0x0189,0x018A,0x018B,0x018B,0x018D,0x018E,0x018F,0x0190,0x0191,0x0191,0x0193,0x0194,0x01F6,0x0196,0x0197,0x0198,0x0198,0x023D,0x019B,0x019C,0x019D,0x0220,0x019F,0x01A0,0x01A0,0x01A2,0x01A2,0x01A4,0x01A4,0x01A6,0x01A7,0x01A7,0x01A9,0x01AA,0x01AB,0x01AC,0x01AC,0x01AE,0x01AF,0x01AF,0x01B1,0x01B2,0x01B3,0x01B3,0x01B5,0x01B5,0x01B7,0x01B8,0x01B8,0x01BA,0x01BB,0x01BC,0x01BC,0x01BE,0x01F7,0x01C0,0x01C1,0x01C2,0x01C3,0x01C4,0x01C5,0x01C4,0x01C7,0x01C8,0x01C7,0x01CA,0x01CB,0x01CA,
+        0x01CD,0x0110,  0x01DD,0x0001,0x018E,  0x01DE,0x0112,  0x01F3,0x0003,0x01F1,0x01F4,0x01F4,  0x01F8,0x0128,
+        0x0222,0x0112,  0x023A,0x0009,0x2C65,0x023B,0x023B,0x023D,0x2C66,0x023F,0x0240,0x0241,0x0241,  0x0246,0x010A,
+        /* IPA Extensions */
+        0x0253,0x0040,0x0181,0x0186,0x0255,0x0189,0x018A,0x0258,0x018F,0x025A,0x0190,0x025C,0x025D,0x025E,0x025F,0x0193,0x0261,0x0262,0x0194,0x0264,0x0265,0x0266,0x0267,0x0197,0x0196,0x026A,0x2C62,0x026C,0x026D,0x026E,0x019C,0x0270,0x0271,0x019D,0x0273,0x0274,0x019F,0x0276,0x0277,0x0278,0x0279,0x027A,0x027B,0x027C,0x2C64,0x027E,0x027F,0x01A6,0x0281,0x0282,0x01A9,0x0284,0x0285,0x0286,0x0287,0x01AE,0x0244,0x01B1,0x01B2,0x0245,0x028D,0x028E,0x028F,0x0290,0x0291,0x01B7,
+        /* Greek, Coptic */
+        0x037B,0x0003,0x03FD,0x03FE,0x03FF,  0x03AC,0x0004,0x0386,0x0388,0x0389,0x038A,  0x03B1,0x0311,
+        0x03C2,0x0002,0x03A3,0x03A3,  0x03C4,0x0308,  0x03CC,0x0003,0x038C,0x038E,0x038F,  0x03D8,0x0118,
+        0x03F2,0x000A,0x03F9,0x03F3,0x03F4,0x03F5,0x03F6,0x03F7,0x03F7,0x03F9,0x03FA,0x03FA,
+        /* Cyrillic */
+        0x0430,0x0320,  0x0450,0x0710,  0x0460,0x0122,  0x048A,0x0136,  0x04C1,0x010E,  0x04CF,0x0001,0x04C0,  0x04D0,0x0144,
+        /* Armenian */
+        0x0561,0x0426,
+
+        0x0000
+    };
+    static const WCHAR cvt2[] = {   /* U+1000 - U+FFFF */
+        /* Phonetic Extensions */
+        0x1D7D,0x0001,0x2C63,
+        /* Latin Extended Additional */
+        0x1E00,0x0196,  0x1EA0,0x015A,
+        /* Greek Extended */
+        0x1F00,0x0608,  0x1F10,0x0606,  0x1F20,0x0608,  0x1F30,0x0608,  0x1F40,0x0606,
+        0x1F51,0x0007,0x1F59,0x1F52,0x1F5B,0x1F54,0x1F5D,0x1F56,0x1F5F,  0x1F60,0x0608,
+        0x1F70,0x000E,0x1FBA,0x1FBB,0x1FC8,0x1FC9,0x1FCA,0x1FCB,0x1FDA,0x1FDB,0x1FF8,0x1FF9,0x1FEA,0x1FEB,0x1FFA,0x1FFB,
+        0x1F80,0x0608,  0x1F90,0x0608,  0x1FA0,0x0608,  0x1FB0,0x0004,0x1FB8,0x1FB9,0x1FB2,0x1FBC,
+        0x1FCC,0x0001,0x1FC3,  0x1FD0,0x0602,  0x1FE0,0x0602,  0x1FE5,0x0001,0x1FEC,  0x1FF2,0x0001,0x1FFC,
+        /* Letterlike Symbols */
+        0x214E,0x0001,0x2132,
+        /* Number forms */
+        0x2170,0x0210,  0x2184,0x0001,0x2183,
+        /* Enclosed Alphanumerics */
+        0x24D0,0x051A,  0x2C30,0x042F,
+        /* Latin Extended-C */
+        0x2C60,0x0102,  0x2C67,0x0106, 0x2C75,0x0102,
+        /* Coptic */
+        0x2C80,0x0164,
+        /* Georgian Supplement */
+        0x2D00,0x0826,
+        /* Full-width */
+        0xFF41,0x031A,
+
+        0x0000
+    };
+    const WCHAR *p;
+    WCHAR bc, nc, cmd;
+
+
+    p = chr < 0x1000 ? cvt1 : cvt2;
+    for (;;) {
+        bc = *p++;                              /* Get block base */
+        if (!bc || chr < bc) break;
+        nc = *p++; cmd = nc >> 8; nc &= 0xFF;   /* Get processing command and block size */
+        if (chr < bc + nc) {    /* In the block? */
+            switch (cmd) {
+            case 0: chr = p[chr - bc]; break;       /* Table conversion */
+            case 1: chr -= (chr - bc) & 1; break;   /* Case pairs */
+            case 2: chr -= 16; break;               /* Shift -16 */
+            case 3: chr -= 32; break;               /* Shift -32 */
+            case 4: chr -= 48; break;               /* Shift -48 */
+            case 5: chr -= 26; break;               /* Shift -26 */
+            case 6: chr += 8; break;                /* Shift +8 */
+            case 7: chr -= 80; break;               /* Shift -80 */
+            case 8: chr -= 0x1C60; break;           /* Shift -0x1C60 */
+            }
+            break;
+        }
+        if (!cmd) p += nc;
+    }
+
+    return chr;
+}
+

lib/oofatfs/option/unicode.c

@@ -0,0 +1,17 @@
+#include "../ff.h"
+
+#if _USE_LFN != 0
+
+#if   _CODE_PAGE == 932 /* Japanese Shift_JIS */
+#include "cc932.c"
+#elif _CODE_PAGE == 936 /* Simplified Chinese GBK */
+#include "cc936.c"
+#elif _CODE_PAGE == 949 /* Korean */
+#include "cc949.c"
+#elif _CODE_PAGE == 950 /* Traditional Chinese Big5 */
+#include "cc950.c"
+#else                   /* Single Byte Character-Set */
+#include "ccsbcs.c"
+#endif
+
+#endif