feat: added get mac address

README.md

@@ -86,8 +86,11 @@ void app_main(void)
     strcpy(send_message.char_value, "THIS IS A CHAR");
     send_message.float_value = 1.234;
     send_message.bool_value = false;
-    printf("Used ESP-NOW version %d.\n", zh_espnow_get_version());
+    printf("ESP-NOW version %d.\n", zh_espnow_get_version());
     printf("ESP-NOW channel %d. \n", zh_espnow_get_channel());
+    uint8_t node_mac[6] = {0};
+    zh_espnow_get_mac(node_mac);
+    printf("ESP-NOW MAC %02X:%02X:%02X:%02X:%02X:%02X.\n", MAC2STR(node_mac));
     uint8_t counter = 0;
     for (;;)
     {

include/zh_espnow.h

@@ -171,13 +171,22 @@ extern "C"
      * @brief Set battery mode.
      *
      * @param[in] battery_mode True to enable the mode false to disable it.
-     * 
+     *
      * @note If true the node does not receive messages.
      *
      * @return ESP_OK if success or an error code otherwise.
      */
     esp_err_t zh_espnow_set_battery_mode(bool battery_mode);
 
+    /**
+     * @brief Get MAC address of the node.
+     *
+     * @param[out] mac_addr Pointer to a buffer containing an eight-byte MAC.
+     *
+     * @return ESP_OK if success or an error code otherwise.
+     */
+    esp_err_t zh_espnow_get_mac(uint8_t *mac_addr);
+
 #ifdef __cplusplus
 }
 #endif

version.txt

@@ -1 +1 @@
-1.6.0
+1.7.0

zh_espnow.c

@@ -592,4 +592,9 @@ esp_err_t zh_espnow_set_battery_mode(bool battery_mode)
     _init_config.battery_mode = battery_mode;
     ZH_ESPNOW_LOGI("Battery mode set successfully.");
     return ESP_OK;
+}
+
+esp_err_t zh_espnow_get_mac(uint8_t *mac_addr)
+{
+    return esp_wifi_get_mac(_init_config.wifi_interface, mac_addr);
 }