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

@@ -32,7 +32,7 @@ extern "C"
         wifi_interface_t wifi_interface; // WiFi interface (STA or AP) used for ESP-NOW operation. @note The MAC address of the device depends on the selected WiFi interface.
         uint8_t wifi_channel;            // Wi-Fi channel uses to send/receive ESP-NOW data. @note Values from 1 to 14.
         uint8_t attempts;                // Maximum number of attempts to send a message. @note It is not recommended to set a value greater than 10.
-        bool battery_mode;               // Battery operation mode. If true, the node does not receive messages.
+        bool battery_mode;               // Battery operation mode. If true the node does not receive messages.
     } zh_espnow_init_config_t;
 
     ESP_EVENT_DECLARE_BASE(ZH_ESPNOW);
@@ -160,6 +160,33 @@ extern "C"
      */
     esp_err_t zh_espnow_set_channel(uint8_t channel);
 
+    /**
+     * @brief Get battery mode.
+     *
+     * @return True if battery mode set false otherwise.
+     */
+    bool zh_espnow_get_battery_mode(void);
+
+    /**
+     * @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 @@
-1.5.0
+1.7.0

zh_espnow.c

@@ -530,8 +530,8 @@ uint8_t zh_espnow_get_attempts(void)
 
 esp_err_t zh_espnow_set_attempts(uint8_t attempts)
 {
-    ZH_ESPNOW_CHECK(_is_initialized == true, ESP_ERR_INVALID_STATE, "ESP-NOW is not initialized.");
-    ZH_ESPNOW_CHECK(attempts > 0, ESP_ERR_INVALID_ARG, "Invalid number of attempts.");
+    ZH_ESPNOW_CHECK(_is_initialized == true, ESP_ERR_INVALID_STATE, "Number of attempts set failed. ESP-NOW is not initialized.");
+    ZH_ESPNOW_CHECK(attempts > 0, ESP_ERR_INVALID_ARG, "Number of attempts set failed. Invalid number.");
     _init_config.attempts = attempts;
     ZH_ESPNOW_LOGI("Number of attempts set successfully.");
     return ESP_OK;
@@ -570,4 +570,31 @@ esp_err_t zh_espnow_set_channel(uint8_t channel)
     _init_config.wifi_channel = channel;
     ZH_ESPNOW_LOGI("ESP-NOW channel set successfully.");
     return err;
+}
+
+bool zh_espnow_get_battery_mode(void)
+{
+    return _init_config.battery_mode;
+}
+
+esp_err_t zh_espnow_set_battery_mode(bool battery_mode)
+{
+    ZH_ESPNOW_CHECK(_is_initialized == true, ESP_ERR_INVALID_STATE, "Battery mode set failed. ESP-NOW is not initialized.");
+    esp_err_t err = esp_now_unregister_send_cb();
+    ZH_ESPNOW_CHECK(err == ESP_OK, err, "Battery mode set failed. Failed to unregister send callback.");
+    if (_init_config.battery_mode == false)
+    {
+        err = esp_now_unregister_recv_cb();
+        ZH_ESPNOW_CHECK(err == ESP_OK, err, "Battery mode set failed. Failed to unregister receive callback.");
+    }
+    err = _zh_espnow_register_callbacks(battery_mode);
+    ZH_ESPNOW_CHECK(err == ESP_OK, err, "Battery mode set failed. Failed to register callbacks.");
+    _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);
 }