feat(log): add new function to log buffer with level and hex dump.

components/log/include/esp_log.h

@@ -95,6 +95,62 @@ uint32_t esp_log_early_timestamp(void);
  */
 void esp_log_write(esp_log_level_t level, const char* tag, const char* format, ...) __attribute__ ((format (printf, 3, 4)));
 
+#include "esp_log_internal.h"
+
+/**
+ * @brief Log a buffer of hex bytes at specified level, seprated into 16 bytes each line.
+ *
+ * @param  tag      description tag
+ *
+ * @param  buffer   Pointer to the buffer array
+ *
+ * @param  buff_len length of buffer in bytes
+ *
+ * @param level     level of the log
+ *
+ */
+#define ESP_LOG_BUFFER_HEX_LEVEL( tag, buffer, buff_len, level ) do {\
+        if ( LOG_LOCAL_LEVEL >= level ) esp_log_buffer_hex_internal( tag, buffer, buff_len, level ); } while(0)
+
+/**
+ * @brief Log a buffer of characters at specified level, seprated into 16 bytes each line. Buffer should contain only printable characters.
+ *
+ * @param  tag      description tag
+ *
+ * @param  buffer   Pointer to the buffer array
+ *
+ * @param  buff_len length of buffer in bytes
+ *
+ * @param level     level of the log
+ *
+ */
+#define ESP_LOG_BUFFER_CHAR_LEVEL( tag, buffer, buff_len, level ) do {\
+    if ( LOG_LOCAL_LEVEL >= level ) esp_log_buffer_char_internal( tag, buffer, buff_len, level ); } while(0)
+
+/**
+ * @brief Dump a buffer to the log at specified level.
+ * 
+ * The dump log shows just like the one below:
+ * 
+ *      W (195) log_example: 0x3ffb4280   45 53 50 33 32 20 69 73  20 67 72 65 61 74 2c 20  |ESP32 is great, |
+ *      W (195) log_example: 0x3ffb4290   77 6f 72 6b 69 6e 67 20  61 6c 6f 6e 67 20 77 69  |working along wi|
+ *      W (205) log_example: 0x3ffb42a0   74 68 20 74 68 65 20 49  44 46 2e 00              |th the IDF..|
+ *      
+ * It is highly recommend to use terminals with over 102 text width.
+ * 
+ * @param tag description tag
+ * 
+ * @param buffer Pointer to the buffer array
+ * 
+ * @param buff_len length of buffer in bytes
+ * 
+ * @param level level of the log
+ */
+#define ESP_LOG_BUFFER_HEXDUMP( tag, buffer, buff_len, level ) do {\
+    if ( LOG_LOCAL_LEVEL >= level ) esp_log_buffer_hexdump_internal( tag, buffer, buff_len, level); } while(0)
+
+
+#if (LOG_LOCAL_LEVEL >= ESP_LOG_INFO)
 /**
  * @brief Log a buffer of hex bytes at Info level
  *
@@ -104,8 +160,10 @@ void esp_log_write(esp_log_level_t level, const char* tag, const char* format, .
  *
  * @param  buff_len length of buffer in bytes
  *
+ * @see ``esp_log_buffer_hex_level``
+ *
  */
-void esp_log_buffer_hex(const char *tag, const void *buffer, uint16_t buff_len);
+#define ESP_LOG_BUFFER_HEX(tag, buffer, buff_len)   ESP_LOG_BUFFER_HEX_LEVEL( tag, buffer, buff_len, ESP_LOG_INFO )
 
 /**
  * @brief Log a buffer of characters at Info level. Buffer should contain only printable characters.
@@ -116,8 +174,20 @@ void esp_log_buffer_hex(const char *tag, const void *buffer, uint16_t buff_len);
  *
  * @param  buff_len length of buffer in bytes
  *
+ * @see ``esp_log_buffer_char_level``
+ *
  */
-void esp_log_buffer_char(const char *tag, const void *buffer, uint16_t buff_len);
+#define ESP_LOG_BUFFER_CHAR(tag, buffer, buff_len)   ESP_LOG_BUFFER_CHAR_LEVEL( tag, buffer, buff_len, ESP_LOG_INFO )
+
+#else
+#define ESP_LOG_BUFFER_HEX(tag, buffer, buff_len)   {}
+#define ESP_LOG_BUFFER_CHAR(tag, buffer, buff_len)  {}
+#endif
+
+//to be back compatible
+#define esp_log_buffer_hex      ESP_LOG_BUFFER_HEX
+#define esp_log_buffer_char     ESP_LOG_BUFFER_CHAR
+
 
 #if CONFIG_LOG_COLORS
 #define LOG_COLOR_BLACK   "30"
@@ -190,6 +260,32 @@ void esp_log_buffer_char(const char *tag, const void *buffer, uint16_t buff_len)
 #define ESP_LOGV( tag, format, ... )  ESP_EARLY_LOGV(tag, format, ##__VA_ARGS__)
 #endif  // BOOTLOADER_BUILD
 
+/** runtime macro to output logs at a speicfied level. 
+ * 
+ * @param tag tag of the log, which can be used to change the log level by ``esp_log_level_set`` at runtime.
+ *
+ * @param level level of the output log.
+ *
+ * @param format format of the output log. see ``printf``
+ *
+ * @param ... variables to be replaced into the log. see ``printf``
+ *
+ * @see ``printf``
+ */
+#define ESP_LOG_LEVEL(level, tag, format, ...) do {\
+                if (level==ESP_LOG_ERROR )          { esp_log_write(ESP_LOG_ERROR,      tag, LOG_FORMAT(E, format), esp_log_timestamp(), tag, ##__VA_ARGS__); }\
+                else if (level==ESP_LOG_WARN )      { esp_log_write(ESP_LOG_WARN,       tag, LOG_FORMAT(W, format), esp_log_timestamp(), tag, ##__VA_ARGS__); }\
+                else if (level==ESP_LOG_DEBUG )     { esp_log_write(ESP_LOG_DEBUG,      tag, LOG_FORMAT(D, format), esp_log_timestamp(), tag, ##__VA_ARGS__); }\
+                else if (level==ESP_LOG_VERBOSE )   { esp_log_write(ESP_LOG_VERBOSE,    tag, LOG_FORMAT(V, format), esp_log_timestamp(), tag, ##__VA_ARGS__); }\
+                else                                { esp_log_write(ESP_LOG_INFO,       tag, LOG_FORMAT(I, format), esp_log_timestamp(), tag, ##__VA_ARGS__); }}while(0)
+
+/** runtime macro to output logs at a speicfied level. Also check the level with ``LOG_LOCAL_LEVEL``.
+ * 
+ * @see ``printf``, ``ESP_LOG_LEVEL``
+ */
+#define ESP_LOG_LEVEL_LOCAL(level, tag, format, ...) do {\
+                if ( LOG_LOCAL_LEVEL >= level ) ESP_LOG_LEVEL(level, tag, format, ##__VA_ARGS__); } while(0);
+
 #ifdef __cplusplus
 }
 #endif

components/log/include/esp_log_internal.h

@@ -0,0 +1,24 @@
+// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef __ESP_LOG_INTERNAL_H__
+#define __ESP_LOG_INTERNAL_H__
+
+//these two functions do not check level versus ESP_LOCAL_LEVEL, this should be done in esp_log.h
+void esp_log_buffer_hex_internal(const char *tag, const void *buffer, uint16_t buff_len, esp_log_level_t level);
+void esp_log_buffer_char_internal(const char *tag, const void *buffer, uint16_t buff_len, esp_log_level_t level);
+void esp_log_buffer_hexdump_internal( const char *tag, const void *buffer, uint16_t buff_len, esp_log_level_t log_level);
+
+#endif
+

components/log/log.c

@@ -52,8 +52,12 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <assert.h>
+#include <ctype.h>
+
 #include "esp_log.h"
+
 #include "rom/queue.h"
+#include "soc/soc_memory_layout.h"
 
 //print number of bytes per line for esp_log_buffer_char and esp_log_buffer_hex
 #define BYTES_PER_LINE 16
@@ -332,32 +336,120 @@ uint32_t esp_log_timestamp() __attribute__((alias("esp_log_early_timestamp")));
 
 #endif //BOOTLOADER_BUILD
 
-void esp_log_buffer_hex(const char *tag, const void *buffer, uint16_t buff_len)
+void esp_log_buffer_hex_internal(const char *tag, const void *buffer, uint16_t buff_len,
+                        esp_log_level_t log_level)
 {
-    const char *as_bytes = (const char *)buffer;
-    char temp_buffer[3*BYTES_PER_LINE + 1]= {0};
-    int line_len = 0;
-    for (int i = 0; i < buff_len; i++) {
-        line_len += sprintf(temp_buffer+line_len, "%02x ", as_bytes[i]);
-        if (((i + 1) % BYTES_PER_LINE == 0) || (i == buff_len - 1)) {
-            ESP_LOGI(tag, "%s", temp_buffer);
-            line_len = 0;
-            temp_buffer[0] = 0;
+    if ( buff_len == 0 ) return;
+    char temp_buffer[BYTES_PER_LINE+3];   //for not-byte-accessible memory
+    char hex_buffer[3*BYTES_PER_LINE+1];
+    const char *ptr_line;
+    int bytes_cur_line;
+
+    do {
+        if ( buff_len > BYTES_PER_LINE ) {
+            bytes_cur_line = BYTES_PER_LINE;
+        } else {
+            bytes_cur_line = buff_len;
         }
-    }
+        if ( !esp_ptr_byte_accesible(buffer) ) {
+            //use memcpy to get around alignment issue
+            memcpy( temp_buffer, buffer, (bytes_cur_line+3)/4*4 );
+            ptr_line = temp_buffer;
+        } else {
+            ptr_line = buffer;
+        }
+
+        for( int i = 0; i < bytes_cur_line; i ++ ) {
+            sprintf( hex_buffer + 3*i, "%02x ", ptr_line[i] );
+        }
+        ESP_LOG_LEVEL( log_level, tag, "%s", hex_buffer );
+        buffer += bytes_cur_line;
+        buff_len -= bytes_cur_line;
+    } while( buff_len );
 }
 
-void esp_log_buffer_char(const char *tag, const void *buffer, uint16_t buff_len)
+void esp_log_buffer_char_internal(const char *tag, const void *buffer, uint16_t buff_len,
+                            esp_log_level_t log_level)
 {
-    const char *as_bytes = (const char *)buffer;
-    char temp_buffer[BYTES_PER_LINE + 1] = {0};
-    int line_len = 0;
-    for (int i = 0; i < buff_len; i++) {
-        line_len += sprintf(temp_buffer+line_len, "%c", as_bytes[i]);
-        if (((i + 1) % BYTES_PER_LINE == 0) || (i == buff_len - 1)) {
-            ESP_LOGI(tag, "%s", temp_buffer);
-            line_len = 0;
-            temp_buffer[0] = 0;
+    if ( buff_len == 0 ) return;
+    char temp_buffer[BYTES_PER_LINE+3];   //for not-byte-accessible memory
+    char char_buffer[BYTES_PER_LINE+1];
+    const char *ptr_line;
+    int bytes_cur_line;
+
+    do {
+        if ( buff_len > BYTES_PER_LINE ) {
+            bytes_cur_line = BYTES_PER_LINE;
+        } else {
+            bytes_cur_line = buff_len;
         }
-    }
+        if ( !esp_ptr_byte_accesible(buffer) ) {
+            //use memcpy to get around alignment issue
+            memcpy( temp_buffer, buffer, (bytes_cur_line+3)/4*4 );
+            ptr_line = temp_buffer;
+        } else {
+            ptr_line = buffer;
+        }
+
+        for( int i = 0; i < bytes_cur_line; i ++ ) {
+            sprintf( char_buffer + i, "%c", ptr_line[i] );
+        }
+        ESP_LOG_LEVEL( log_level, tag, "%s", char_buffer );
+        buffer += bytes_cur_line;
+        buff_len -= bytes_cur_line;
+    } while( buff_len );
+}
+
+void esp_log_buffer_hexdump_internal( const char *tag, const void *buffer, uint16_t buff_len, esp_log_level_t log_level)
+{
+
+    if ( buff_len == 0 ) return;
+    char temp_buffer[BYTES_PER_LINE+3];   //for not-byte-accessible memory
+    const char *ptr_line;
+    //format: field[length]
+    // ADDR[10]+" "+DATA_HEX[8*3]+" "+DATA_HEX[8*3]+"  |"+DATA_CHAR[8]+"|"
+    char hd_buffer[10+2+BYTES_PER_LINE*3+3+BYTES_PER_LINE+1+1];
+    char *ptr_hd;
+    int bytes_cur_line;
+
+    do {
+        if ( buff_len > BYTES_PER_LINE ) {
+            bytes_cur_line = BYTES_PER_LINE;
+        } else {
+            bytes_cur_line = buff_len;
+        }
+        if ( !esp_ptr_byte_accesible(buffer) ) {
+            //use memcpy to get around alignment issue
+            memcpy( temp_buffer, buffer, (bytes_cur_line+3)/4*4 );
+            ptr_line = temp_buffer;
+        } else {
+            ptr_line = buffer;
+        }
+        ptr_hd = hd_buffer;
+        
+        ptr_hd += sprintf( ptr_hd, "%p ", buffer );
+        for( int i = 0; i < BYTES_PER_LINE; i ++ ) {
+            if ( (i&7)==0 ) {
+                ptr_hd += sprintf( ptr_hd, " " );
+            }
+            if ( i < bytes_cur_line ) {
+                ptr_hd += sprintf( ptr_hd, " %02x", ptr_line[i] );
+            } else {
+                ptr_hd += sprintf( ptr_hd, "   " );
+            }
+        }
+        ptr_hd += sprintf( ptr_hd, "  |" );
+        for( int i = 0; i < bytes_cur_line; i ++ ) {
+            if ( isprint((int)ptr_line[i]) ) {
+                ptr_hd += sprintf( ptr_hd, "%c", ptr_line[i] );
+            } else {
+                ptr_hd += sprintf( ptr_hd, "." );
+            }
+        }
+        ptr_hd += sprintf( ptr_hd, "|" );
+
+        ESP_LOG_LEVEL( log_level, tag, "%s", hd_buffer );
+        buffer += bytes_cur_line;
+        buff_len -= bytes_cur_line;
+    } while( buff_len );
 }

components/soc/esp32/include/soc/soc.h

@@ -274,12 +274,12 @@
 //}}
 
 /* Overall memory map */
+#define SOC_DROM_LOW    0x3F400000
+#define SOC_DROM_HIGH   0x3F800000
 #define SOC_IROM_LOW    0x400D0000
 #define SOC_IROM_HIGH   0x40400000
 #define SOC_IRAM_LOW    0x40080000
 #define SOC_IRAM_HIGH   0x400A0000
-#define SOC_DROM_LOW    0x3F400000
-#define SOC_DROM_HIGH   0x3F800000
 #define SOC_RTC_IRAM_LOW  0x400C0000
 #define SOC_RTC_IRAM_HIGH 0x400C2000
 #define SOC_RTC_DATA_LOW  0x50000000
@@ -295,6 +295,10 @@
 #define SOC_DMA_LOW  0x3FFAE000
 #define SOC_DMA_HIGH 0x40000000
 
+// Region of memory that is byte-accessible. See esp_ptr_byte_accesible().
+#define SOC_BYTE_ACCESSIBLE_LOW     0x3FFAE000
+#define SOC_BYTE_ACCESSIBLE_HIGH    0x40000000
+
 //Interrupt hardware source table
 //This table is decided by hardware, don't touch this.
 #define ETS_WIFI_MAC_INTR_SOURCE                0/**< interrupt of WiFi MAC, level*/

components/soc/include/soc/soc_memory_layout.h

@@ -70,3 +70,9 @@ inline static bool esp_ptr_executable(const void *p)
         || (ip >= SOC_IRAM_LOW && ip < SOC_IRAM_HIGH)
         || (ip >= SOC_RTC_IRAM_LOW && ip < SOC_RTC_IRAM_HIGH);
 }
+
+inline bool esp_ptr_byte_accesible(const void *p)
+{
+    //currently only support DRAM, add PSRAM region in the future
+    return (intptr_t)p >= SOC_BYTE_ACCESSIBLE_LOW && (intptr_t)p < SOC_BYTE_ACCESSIBLE_HIGH;
+}