ESP8266 RTOS 開發筆記（1）STA+AP模式（共存）

RTOS的示例程序里面分別有STA和AP的示例，由於項目需要，要是用STA+AP工作模式；
之前將STA和AP的參數放在一起定義，導致一直只能啟動STA；分開單獨定義即可。

STA和AP參數定義

wifi_config_t wifi_config_ap = {
        .ap = {
            .ssid = EXAMPLE_ESP_WIFI_SSID,
            .ssid_len = strlen(EXAMPLE_ESP_WIFI_SSID),
            .password = EXAMPLE_ESP_WIFI_PASS,
            .max_connection = EXAMPLE_MAX_STA_CONN,
            .authmode = WIFI_AUTH_WPA_WPA2_PSK
        },
    };
wifi_config_t wifi_config_sta = {       
        .sta = {
            .ssid = WIFI_SSID,
            .password = WIFI_PASS
        },
    };

WiFi初始化

void wifi_init()
{
    tcpip_adapter_init();
    ESP_ERROR_CHECK(esp_event_loop_create_default());

    wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
    ESP_ERROR_CHECK(esp_wifi_init(&cfg));

    ESP_ERROR_CHECK(esp_event_handler_register(WIFI_EVENT, ESP_EVENT_ANY_ID, &wifi_event_handler, NULL));

    
    if (strlen(EXAMPLE_ESP_WIFI_PASS) == 0) {
        wifi_config_ap.ap.authmode = WIFI_AUTH_OPEN;
    }
    if (strlen((char *)wifi_config_sta.sta.password)) {
        wifi_config_sta.sta.threshold.authmode = WIFI_AUTH_WPA2_PSK;
    }

    ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_APSTA));         
    ESP_ERROR_CHECK(esp_wifi_start());

    ESP_ERROR_CHECK(esp_wifi_set_config(ESP_IF_WIFI_STA, &wifi_config_sta));    
    ESP_ERROR_CHECK(esp_wifi_set_config(ESP_IF_WIFI_AP, &wifi_config_ap)); 
    ESP_LOGI(TAG, "wifi_init_softap&sta finished.AP->SSID:%s password:%s\tSTA->SSID:%s password:%s",EXAMPLE_ESP_WIFI_SSID, EXAMPLE_ESP_WIFI_PASS,WIFI_SSID, WIFI_PASS);
}

所有WiFi狀態處理在wifi_event_handler(void* arg, esp_event_base_t event_base,int32_t event_id, void* event_data)函數中處理即可

wifi事件定義（esp_wifi_types.h）

/** WiFi event declarations */
typedef enum {
    WIFI_EVENT_WIFI_READY = 0,           /**< WiFi ready */
    WIFI_EVENT_SCAN_DONE,                /**< finish scanning AP */
    WIFI_EVENT_STA_START,                /**< station start */
    WIFI_EVENT_STA_STOP,                 /**< station stop */
    WIFI_EVENT_STA_CONNECTED,            /**< station connected to AP */
    WIFI_EVENT_STA_DISCONNECTED,         /**< station disconnected from AP */
    WIFI_EVENT_STA_AUTHMODE_CHANGE,      /**< the auth mode of AP connected by station changed */
    WIFI_EVENT_STA_BSS_RSSI_LOW,         /**< AP's RSSI crossed configured threshold */
    WIFI_EVENT_STA_WPS_ER_SUCCESS,       /**< station wps succeeds in enrollee mode */
    WIFI_EVENT_STA_WPS_ER_FAILED,        /**< station wps fails in enrollee mode */
    WIFI_EVENT_STA_WPS_ER_TIMEOUT,       /**< station wps timeout in enrollee mode */
    WIFI_EVENT_STA_WPS_ER_PIN,           /**< station wps pin code in enrollee mode */
    WIFI_EVENT_AP_START,                 /**< soft-AP start */
    WIFI_EVENT_AP_STOP,                  /**< soft-AP stop */
    WIFI_EVENT_AP_STACONNECTED,          /**< a station connected to soft-AP */
    WIFI_EVENT_AP_STADISCONNECTED,       /**< a station disconnected from soft-AP */
    WIFI_EVENT_AP_PROBEREQRECVED,        /**< Receive probe request packet in soft-AP interface */
} wifi_event_t;