esp32/mphalport: Add function/line/file info to check_esp_err exception.

Currently, check_esp_err() raises an exception without a location in the
source code, eg:

    Traceback (most recent call last):
      File "<stdin>", line 8, in <module>
    OSError: (-258, 'ESP_ERR_INVALID_ARG')

This commit allows additional error reporting (function, line and file) to
be enabled via detailed exceptions.  Change the error reporting config to

    #define MICROPY_ERROR_REPORTING (MICROPY_ERROR_REPORTING_DETAILED)

and then exception messages from IDF errors look like:

    Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
    OSError: (-258, "0x0102 ESP_ERR_INVALID_ARG in function 'set_duty_u16'
    at line 342 in file './machine_pwm.c'")

Signed-off-by: Ihor Nehrutsa <[email protected]>

ports/esp32/mphalport.c

@@ -53,7 +53,12 @@ STATIC uint8_t stdin_ringbuf_array[260];
 ringbuf_t stdin_ringbuf = {stdin_ringbuf_array, sizeof(stdin_ringbuf_array), 0, 0};
 
 // Check the ESP-IDF error code and raise an OSError if it's not ESP_OK.
-void check_esp_err(esp_err_t code) {
+#if MICROPY_ERROR_REPORTING <= MICROPY_ERROR_REPORTING_NORMAL
+void check_esp_err_(esp_err_t code)
+#else
+void check_esp_err_(esp_err_t code, const char *func, const int line, const char *file)
+#endif
+{
     if (code != ESP_OK) {
         // map esp-idf error code to posix error code
         uint32_t pcode = -code;
@@ -75,7 +80,16 @@ void check_esp_err(esp_err_t code) {
             return;
         }
         o_str->base.type = &mp_type_str;
+        #if MICROPY_ERROR_REPORTING > MICROPY_ERROR_REPORTING_NORMAL
+        char err_msg[64];
+        esp_err_to_name_r(code, err_msg, sizeof(err_msg));
+        vstr_t vstr;
+        vstr_init(&vstr, 80);
+        vstr_printf(&vstr, "0x%04X %s in function '%s' at line %d in file '%s'", code, err_msg, func, line, file);
+        o_str->data = (const byte *)vstr_null_terminated_str(&vstr);
+        #else
         o_str->data = (const byte *)esp_err_to_name(code); // esp_err_to_name ret's ptr to const str
+        #endif
         o_str->len = strlen((char *)o_str->data);
         o_str->hash = qstr_compute_hash(o_str->data, o_str->len);
         // raise

ports/esp32/mphalport.h

@@ -55,7 +55,13 @@ extern TaskHandle_t mp_main_task_handle;
 extern ringbuf_t stdin_ringbuf;
 
 // Check the ESP-IDF error code and raise an OSError if it's not ESP_OK.
-void check_esp_err(esp_err_t code);
+#if MICROPY_ERROR_REPORTING <= MICROPY_ERROR_REPORTING_NORMAL
+#define check_esp_err(code) check_esp_err_(code)
+void check_esp_err_(esp_err_t code);
+#else
+#define check_esp_err(code) check_esp_err_(code, __FUNCTION__, __LINE__, __FILE__)
+void check_esp_err_(esp_err_t code, const char *func, const int line, const char *file);
+#endif
 
 uint32_t mp_hal_ticks_us(void);
 __attribute__((always_inline)) static inline uint32_t mp_hal_ticks_cpu(void) {