90 lines
3.3 KiB
C
90 lines
3.3 KiB
C
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#include "wifi_station.h"
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#include "esp_wifi.h"
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#include "esp_log.h"
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/* 待连接AP的ssid、password，连接失败重试次数 可以通过idf.py menuconfig配置 */
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#define ESP_WIFI_SSID CONFIG_ESP_WIFI_SSID
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#define ESP_WIFI_PASS CONFIG_ESP_WIFI_PASSWORD
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#define ESP_MAXIMUM_RETRY CONFIG_ESP_MAXIMUM_RETRY
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static const char *TAG = "wifi station";
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static int s_retry_num = 0;
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/* 修正：该函数还需要仔细编写，以处理在运行过程中发生的断连等多种事件，增加程序的健壮性 */
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static void event_handler(void *arg, esp_event_base_t event_base,
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int32_t event_id, void *event_data)
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{
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if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_START)
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{
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esp_wifi_connect();
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}
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else if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_DISCONNECTED)
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{
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/* disconnected: 重试ESP_MAXIMUM_RETRY次*/
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ESP_LOGI(TAG, "connect to the AP fail");
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if (s_retry_num < ESP_MAXIMUM_RETRY)
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{
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esp_wifi_connect();
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s_retry_num++;
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ESP_LOGI(TAG, "retry to connect to the AP");
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}
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else
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{
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ESP_LOGI(TAG, "Failed to connect to SSID:%s, password:%s",
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ESP_WIFI_SSID, ESP_WIFI_PASS);
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}
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}
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else if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_CONNECTED)
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{
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ESP_LOGI(TAG, "connected to ap SSID:%s password:%s",
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ESP_WIFI_SSID, ESP_WIFI_PASS);
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}
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else if (event_base == IP_EVENT && event_id == IP_EVENT_STA_GOT_IP)
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{
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/* connected后lwip任务自动启动DHCP服务，分配ip */
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ip_event_got_ip_t *event = (ip_event_got_ip_t *)event_data;
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ESP_LOGI(TAG, "got ip:" IPSTR, IP2STR(&event->ip_info.ip));
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s_retry_num = 0;
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}
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}
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void wifi_init_sta(void)
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{
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ESP_LOGI(TAG, "ESP_WIFI_INIT_STA");
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/* 初始化 */
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ESP_ERROR_CHECK(esp_netif_init());
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ESP_ERROR_CHECK(esp_event_loop_create_default());
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esp_netif_create_default_wifi_sta();
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wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
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ESP_ERROR_CHECK(esp_wifi_init(&cfg));
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/* 注册WIFI和IP事件 */
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esp_event_handler_instance_t instance_any_id;
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esp_event_handler_instance_t instance_got_ip;
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ESP_ERROR_CHECK(esp_event_handler_instance_register(WIFI_EVENT,
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ESP_EVENT_ANY_ID,
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&event_handler,
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NULL,
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&instance_any_id));
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ESP_ERROR_CHECK(esp_event_handler_instance_register(IP_EVENT,
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IP_EVENT_STA_GOT_IP,
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&event_handler,
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NULL,
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&instance_got_ip));
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/* 配置、开启WIFI */
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wifi_config_t wifi_config = {
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.sta = {
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.ssid = ESP_WIFI_SSID,
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.password = ESP_WIFI_PASS,
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.threshold.authmode = WIFI_AUTH_WPA2_PSK,
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},
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};
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ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA));
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ESP_ERROR_CHECK(esp_wifi_set_config(WIFI_IF_STA, &wifi_config));
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ESP_ERROR_CHECK(esp_wifi_start());
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}
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