optimize log facility for multi threading

- Shorten filenames
- Add log_printf with mutex locking to play nice with Serial and two
cores

cores/esp32/esp32-hal-log.h

@@ -65,35 +65,38 @@ extern "C"
 #define ARDUHAL_LOG_RESET_COLOR
 #endif
 
+const char * pathToFileName(const char * path);
+int log_printf(const char *fmt, ...);
+
 #define ARDUHAL_SHORT_LOG_FORMAT(letter, format)  ARDUHAL_LOG_COLOR_ ## letter format ARDUHAL_LOG_RESET_COLOR "\r\n"
-#define ARDUHAL_LOG_FORMAT(letter, format)  ARDUHAL_LOG_COLOR_ ## letter "[" #letter "][%s():%d] " format ARDUHAL_LOG_RESET_COLOR "\r\n", __FUNCTION__, __LINE__
+#define ARDUHAL_LOG_FORMAT(letter, format)  ARDUHAL_LOG_COLOR_ ## letter "[" #letter "][%s:%u] %s(): " format ARDUHAL_LOG_RESET_COLOR "\r\n", pathToFileName(__FILE__), __LINE__, __FUNCTION__
 
 #if CONFIG_ARDUHAL_LOG_DEFAULT_LEVEL >= ARDUHAL_LOG_LEVEL_VERBOSE
-#define log_v(format, ...) ets_printf(ARDUHAL_SHORT_LOG_FORMAT(V, format), ##__VA_ARGS__)
+#define log_v(format, ...) log_printf(ARDUHAL_LOG_FORMAT(V, format), ##__VA_ARGS__)
 #else
 #define log_v(format, ...)
 #endif
 
 #if CONFIG_ARDUHAL_LOG_DEFAULT_LEVEL >= ARDUHAL_LOG_LEVEL_DEBUG
-#define log_d(format, ...) ets_printf(ARDUHAL_SHORT_LOG_FORMAT(D, format), ##__VA_ARGS__)
+#define log_d(format, ...) log_printf(ARDUHAL_LOG_FORMAT(D, format), ##__VA_ARGS__)
 #else
 #define log_d(format, ...)
 #endif
 
 #if CONFIG_ARDUHAL_LOG_DEFAULT_LEVEL >= ARDUHAL_LOG_LEVEL_INFO
-#define log_i(format, ...) ets_printf(ARDUHAL_SHORT_LOG_FORMAT(I, format), ##__VA_ARGS__)
+#define log_i(format, ...) log_printf(ARDUHAL_LOG_FORMAT(I, format), ##__VA_ARGS__)
 #else
 #define log_i(format, ...)
 #endif
 
 #if CONFIG_ARDUHAL_LOG_DEFAULT_LEVEL >= ARDUHAL_LOG_LEVEL_WARN
-#define log_w(format, ...) ets_printf(ARDUHAL_LOG_FORMAT(W, format), ##__VA_ARGS__)
+#define log_w(format, ...) log_printf(ARDUHAL_LOG_FORMAT(W, format), ##__VA_ARGS__)
 #else
 #define log_w(format, ...)
 #endif
 
 #if CONFIG_ARDUHAL_LOG_DEFAULT_LEVEL >= ARDUHAL_LOG_LEVEL_ERROR
-#define log_e(format, ...) ets_printf(ARDUHAL_LOG_FORMAT(E, format), ##__VA_ARGS__)
+#define log_e(format, ...) log_printf(ARDUHAL_LOG_FORMAT(E, format), ##__VA_ARGS__)
 #else
 #define log_e(format, ...)
 #endif

cores/esp32/esp32-hal-misc.c

@@ -47,4 +47,18 @@ void delayMicroseconds(uint32_t us)
     }
 }
 
+//used by hal log
+const char * IRAM_ATTR pathToFileName(const char * path){
+    size_t i = 0;
+    size_t pos = 0;
+    char * p = (char *)path;
+    while(*p){
+        i++;
+        if(*p == '/' || *p == '\\'){
+            pos = i;
+        }
+        p++;
+    }
+    return path+pos;
+}
 

cores/esp32/esp32-hal-uart.c

@@ -358,5 +358,38 @@ int uartGetDebug()
     return s_uart_debug_nr;
 }
 
-
+int log_printf(const char *format, ...)
+{
+    if(s_uart_debug_nr < 0){
+        return 0;
+    }
+    char loc_buf[64];
+    char * temp = loc_buf;
+    int len;
+    va_list arg;
+    va_list copy;
+    va_start(arg, format);
+    va_copy(copy, arg);
+    len = vsnprintf(NULL, 0, format, arg);
+    va_end(copy);
+    if(len >= sizeof(loc_buf)){
+        temp = (char*)malloc(len+1);
+        if(temp == NULL) {
+            return 0;
+        }
+    }
+    vsnprintf(temp, len+1, format, arg);
+    if(_uart_bus_array[s_uart_debug_nr].lock){
+        while (xSemaphoreTake(_uart_bus_array[s_uart_debug_nr].lock, portMAX_DELAY) != pdPASS);
+        ets_printf("%s", temp);
+        xSemaphoreGive(_uart_bus_array[s_uart_debug_nr].lock);
+    } else {
+        ets_printf("%s", temp);
+    }
+    va_end(arg);
+    if(len > 64){
+        free(temp);
+    }
+    return len;
+}
 

cores/esp32/esp32-hal.h

@@ -28,6 +28,7 @@ extern "C" {
 #include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <stdarg.h>
 #include <inttypes.h>
 #include <string.h>
 #include <math.h>