回调原型

static esp_err_t event_handler

(

void *ctx,

system_event_t *event

)

函数功能

WIFI状态机回调函数

参数

[in] event:

typedef struct {

system_event_id_t event_id; /*事件ID*/

system_event_info_t event_info; /*事件信息*/

} system_event_t;

//事件ID取值

typedef enum {

SYSTEM_EVENT_WIFI_READY = 0,           /*WiFi准备好*/

SYSTEM_EVENT_SCAN_DONE,                /*扫描AP完成*/

SYSTEM_EVENT_STA_START,                /*作为STA开始工作*/

SYSTEM_EVENT_STA_STOP,                 /*作为STA结束工作*/

SYSTEM_EVENT_STA_CONNECTED,            /*作为STA连接上AP*/

SYSTEM_EVENT_STA_DISCONNECTED,         /*作为STA断开AP*/

SYSTEM_EVENT_STA_AUTHMODE_CHANGE,      /*作为STA连接的AP改变了*/

SYSTEM_EVENT_STA_GOT_IP,               /*作为STA从AP获取了IP*/

SYSTEM_EVENT_STA_LOST_IP,              /*作为STA丢掉了IP，也就是错了*/

SYSTEM_EVENT_STA_WPS_ER_SUCCESS,    /*wps succeeds in enrollee mode */

SYSTEM_EVENT_STA_WPS_ER_FAILED,    /* wps fails in enrollee mode */

SYSTEM_EVENT_STA_WPS_ER_TIMEOUT,    /* wps timeout in enrollee mode */

SYSTEM_EVENT_STA_WPS_ER_PIN,        /*wps pin code in enrollee mode */

SYSTEM_EVENT_AP_START,                 /*AP开始*/

SYSTEM_EVENT_AP_STOP,                  /*AP结束*/

SYSTEM_EVENT_AP_STACONNECTED,          /*有STA连上SP32的AP*/

SYSTEM_EVENT_AP_STADISCONNECTED,       /*有STA断开ESP32的AP*/

SYSTEM_EVENT_AP_PROBEREQRECVED,        /*从AP中接收包*/

SYSTEM_EVENT_GOT_IP6,                  /*获取IPv6*/

SYSTEM_EVENT_ETH_START,                /*有线开始*/

SYSTEM_EVENT_ETH_STOP,                 /*有线停止*/

SYSTEM_EVENT_ETH_CONNECTED,            /*有线上线*/

SYSTEM_EVENT_ETH_DISCONNECTED,         /*有线掉线*/

SYSTEM_EVENT_ETH_GOT_IP,               /*有线获取了IP*/

SYSTEM_EVENT_MAX

} system_event_id_t;

返回值

ESP_OK：成功

ESP_ERR_INVALID_ARG : 参数错误

回调原型

esp_err_t esp_event_loop_init

(

)

函数功能

设置WiFi回调函数

参数

[in] cb:回调函数指针

[in] ctx:保留

返回值

ESP_OK：成功

other: 失败

回调原型

esp_err_t esp_wifi_set_mode

(

wifi_mode_t mode

)

函数功能

设置WiFi工作模式函数

参数

[in] mode:wifi工作模式

返回值

ESP_OK：成功

other: 失败

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void app_main()

{

ESP_ERROR_CHECK( nvs_flash_init() );

tcpip_adapter_init();

ESP_ERROR_CHECK(esp_event_loop_init(event_handler, NULL));

wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();

ESP_ERROR_CHECK(esp_wifi_init(&cfg));

wifi_config_t wifi_config = {

.ap = {

.ssid = "Helon_test",

.ssid_len = 0,

/* 最多只能被4个station同时连接,这里设置为只能被一个station连接 */

.max_connection = 1,

.password = "20180604",

.authmode = WIFI_AUTH_WPA_WPA2_PSK,

},

};

ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_AP));

ESP_ERROR_CHECK(esp_wifi_set_config(ESP_IF_WIFI_AP, &wifi_config));

ESP_ERROR_CHECK(esp_wifi_start());

}

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static esp_err_t event_handler(void *ctx, system_event_t *event)

{

switch (event->event_id)

{

case SYSTEM_EVENT_AP_START:

printf("\nwifi_softap_start\n");

break;

case SYSTEM_EVENT_AP_STACONNECTED:

printf("\nwifi_softap_connectted\n");

break;

case SYSTEM_EVENT_AP_STADISCONNECTED:

printf("\nwifi_softap_disconnectted\n");

break;

default:

break;

}

return ESP_OK;

}