esp-nimble: Add support for logging

This change adds support for nimble logging using IDF APIs. By default,
nimble logging level is set to follow global logging configuration.

porting/nimble/include/modlog/modlog.h

@@ -25,8 +25,32 @@
 #include "log_common/log_common.h"
 #include "log/log.h"
 
+#ifdef ESP_PLATFORM
+#include "esp_log.h"
+#include <stdio.h>
+#include <stdarg.h>
+#endif
+
 #define MODLOG_MODULE_DFLT 255
 
+#ifdef ESP_PLATFORM
+#define MODLOG_DEBUG(ml_mod_, ml_msg_, ...) \
+    esp_log_write(ESP_LOG_DEBUG, "NimBLE",ml_msg_, ##__VA_ARGS__)
+
+#define MODLOG_INFO(ml_mod_, ml_msg_, ...) \
+    esp_log_write(ESP_LOG_INFO, "NimBLE",ml_msg_, ##__VA_ARGS__)
+
+#define MODLOG_WARN(ml_mod_, ml_msg_, ...) \
+    esp_log_write(ESP_LOG_WARN, "NimBLE",ml_msg_, ##__VA_ARGS__)
+
+#define MODLOG_ERROR(ml_mod_, ml_msg_, ...) \
+    esp_log_write(ESP_LOG_ERROR, "NimBLE",ml_msg_, ##__VA_ARGS__)
+
+#define MODLOG_CRITICAL(ml_mod_, ml_msg_, ...) \
+    esp_log_write(ESP_LOG_ERROR, "NimBLE",ml_msg_, ##__VA_ARGS__)
+
+#else
+
 #if MYNEWT_VAL(LOG_LEVEL) <= LOG_LEVEL_DEBUG || defined __DOXYGEN__
 #define MODLOG_DEBUG(ml_mod_, ml_msg_, ...) \
     printf((ml_msg_), ##__VA_ARGS__)
@@ -62,6 +86,8 @@
 #define MODLOG_CRITICAL(ml_mod_, ...) IGNORE(__VA_ARGS__)
 #endif
 
+#endif
+
 #define MODLOG(ml_lvl_, ml_mod_, ...) \
     MODLOG_ ## ml_lvl_((ml_mod_), __VA_ARGS__)
 

porting/nimble/src/nimble_port.c

@@ -26,6 +26,9 @@
 #include "controller/ble_ll.h"
 #include "transport/ram/ble_hci_ram.h"
 #endif
+#ifdef ESP_PLATFORM
+#include "esp_log.h"
+#endif
 
 static struct ble_npl_eventq g_eventq_dflt;
 
@@ -47,6 +50,11 @@ nimble_port_init(void)
     os_cputime_init(32768);
     ble_ll_init();
 #endif
+
+#ifdef ESP_PLATFORM
+    esp_log_level_set("NimBLE", LOG_LOCAL_LEVEL);
+#endif
+
 }
 
 void