add moduos.c

port/moduos.c

@@ -0,0 +1,147 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2013, 2014 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 <stdint.h>
+#include <string.h>
+
+#include "py/runtime.h"
+#include "py/objtuple.h"
+#include "py/objstr.h"
+#include "lib/timeutils/timeutils.h"
+#include "lib/oofatfs/ff.h"
+#include "lib/oofatfs/diskio.h"
+#include "extmod/misc.h"
+#include "extmod/vfs.h"
+#include "extmod/vfs_fat.h"
+#include "genhdr/mpversion.h"
+#include "rng.h"
+#include "uart.h"
+#include "portmodules.h"
+
+/// \module os - basic "operating system" services
+///
+/// The `os` module contains functions for filesystem access and `urandom`.
+///
+/// The filesystem has `/` as the root directory, and the available physical
+/// drives are accessible from here.  They are currently:
+///
+///     /flash      -- the internal flash filesystem
+///     /sd         -- the SD card (if it exists)
+///
+/// On boot up, the current directory is `/flash` if no SD card is inserted,
+/// otherwise it is `/sd`.
+
+STATIC const qstr os_uname_info_fields[] = {
+    MP_QSTR_sysname, MP_QSTR_nodename,
+    MP_QSTR_release, MP_QSTR_version, MP_QSTR_machine
+};
+STATIC const MP_DEFINE_STR_OBJ(os_uname_info_sysname_obj, "pyboard");
+STATIC const MP_DEFINE_STR_OBJ(os_uname_info_nodename_obj, "pyboard");
+STATIC const MP_DEFINE_STR_OBJ(os_uname_info_release_obj, MICROPY_VERSION_STRING);
+STATIC const MP_DEFINE_STR_OBJ(os_uname_info_version_obj, MICROPY_GIT_TAG " on " MICROPY_BUILD_DATE);
+STATIC const MP_DEFINE_STR_OBJ(os_uname_info_machine_obj, MICROPY_HW_BOARD_NAME " with " MICROPY_HW_MCU_NAME);
+STATIC MP_DEFINE_ATTRTUPLE(
+    os_uname_info_obj,
+    os_uname_info_fields,
+    5,
+    (mp_obj_t)&os_uname_info_sysname_obj,
+    (mp_obj_t)&os_uname_info_nodename_obj,
+    (mp_obj_t)&os_uname_info_release_obj,
+    (mp_obj_t)&os_uname_info_version_obj,
+    (mp_obj_t)&os_uname_info_machine_obj
+);
+
+STATIC mp_obj_t os_uname(void) {
+    return (mp_obj_t)&os_uname_info_obj;
+}
+STATIC MP_DEFINE_CONST_FUN_OBJ_0(os_uname_obj, os_uname);
+
+/// \function sync()
+/// Sync all filesystems.
+STATIC mp_obj_t os_sync(void) {
+    for (mp_vfs_mount_t *vfs = MP_STATE_VM(vfs_mount_table); vfs != NULL; vfs = vfs->next) {
+        // this assumes that vfs->obj is fs_user_mount_t with block device functions
+        disk_ioctl(MP_OBJ_TO_PTR(vfs->obj), CTRL_SYNC, NULL);
+    }
+    return mp_const_none;
+}
+MP_DEFINE_CONST_FUN_OBJ_0(mod_os_sync_obj, os_sync);
+
+#if MICROPY_HW_ENABLE_RNG
+/// \function urandom(n)
+/// Return a bytes object with n random bytes, generated by the hardware
+/// random number generator.
+STATIC mp_obj_t os_urandom(mp_obj_t num) {
+    mp_int_t n = mp_obj_get_int(num);
+    vstr_t vstr;
+    vstr_init_len(&vstr, n);
+    for (int i = 0; i < n; i++) {
+        vstr.buf[i] = rng_get();
+    }
+    return mp_obj_new_str_from_vstr(&mp_type_bytes, &vstr);
+}
+STATIC MP_DEFINE_CONST_FUN_OBJ_1(os_urandom_obj, os_urandom);
+#endif
+
+STATIC const mp_rom_map_elem_t os_module_globals_table[] = {
+    { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_uos) },
+
+    { MP_ROM_QSTR(MP_QSTR_uname), MP_ROM_PTR(&os_uname_obj) },
+
+    { MP_ROM_QSTR(MP_QSTR_chdir), MP_ROM_PTR(&mp_vfs_chdir_obj) },
+    { MP_ROM_QSTR(MP_QSTR_getcwd), MP_ROM_PTR(&mp_vfs_getcwd_obj) },
+    { MP_ROM_QSTR(MP_QSTR_ilistdir), MP_ROM_PTR(&mp_vfs_ilistdir_obj) },
+    { MP_ROM_QSTR(MP_QSTR_listdir), MP_ROM_PTR(&mp_vfs_listdir_obj) },
+    { MP_ROM_QSTR(MP_QSTR_mkdir), MP_ROM_PTR(&mp_vfs_mkdir_obj) },
+    { MP_ROM_QSTR(MP_QSTR_remove), MP_ROM_PTR(&mp_vfs_remove_obj) },
+    { MP_ROM_QSTR(MP_QSTR_rename),MP_ROM_PTR(&mp_vfs_rename_obj)},
+    { MP_ROM_QSTR(MP_QSTR_rmdir), MP_ROM_PTR(&mp_vfs_rmdir_obj) },
+    { MP_ROM_QSTR(MP_QSTR_stat), MP_ROM_PTR(&mp_vfs_stat_obj) },
+    { MP_ROM_QSTR(MP_QSTR_statvfs), MP_ROM_PTR(&mp_vfs_statvfs_obj) },
+    { MP_ROM_QSTR(MP_QSTR_unlink), MP_ROM_PTR(&mp_vfs_remove_obj) }, // unlink aliases to remove
+
+    { MP_ROM_QSTR(MP_QSTR_sync), MP_ROM_PTR(&mod_os_sync_obj) },
+
+    /// \constant sep - separation character used in paths
+    { MP_ROM_QSTR(MP_QSTR_sep), MP_ROM_QSTR(MP_QSTR__slash_) },
+
+#if MICROPY_HW_ENABLE_RNG
+    { MP_ROM_QSTR(MP_QSTR_urandom), MP_ROM_PTR(&os_urandom_obj) },
+#endif
+
+    // these are MicroPython extensions
+    { MP_ROM_QSTR(MP_QSTR_dupterm), MP_ROM_PTR(&mp_uos_dupterm_obj) },
+    { MP_ROM_QSTR(MP_QSTR_mount), MP_ROM_PTR(&mp_vfs_mount_obj) },
+    { MP_ROM_QSTR(MP_QSTR_umount), MP_ROM_PTR(&mp_vfs_umount_obj) },
+    { MP_ROM_QSTR(MP_QSTR_VfsFat), MP_ROM_PTR(&mp_fat_vfs_type) },
+};
+
+STATIC MP_DEFINE_CONST_DICT(os_module_globals, os_module_globals_table);
+
+const mp_obj_module_t mp_module_uos = {
+    .base = { &mp_type_module },
+    .globals = (mp_obj_dict_t*)&os_module_globals,
+};