93 lines
2.7 KiB
C
93 lines
2.7 KiB
C
#include <esp_wifi.h>
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#include <freertos/event_groups.h>
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#include <esp_log.h>
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#define WIFI_SSID "UvosServerNet24"
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#define WIFI_PASS "A159753654F"
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#define MAXIMUM_RETRY 8
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static const char *WIFI_TAG = "wifi station";
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static EventGroupHandle_t s_wifi_event_group;
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#define WIFI_CONNECTED_BIT BIT0
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#define WIFI_FAIL_BIT BIT1
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static int s_retry_num = 0;
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static void net_event_handler(void* arg, esp_event_base_t event_base, 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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if (s_retry_num < 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(WIFI_TAG, "retry to connect to the AP");
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}
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else
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{
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xEventGroupSetBits(s_wifi_event_group, WIFI_FAIL_BIT);
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}
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ESP_LOGI(WIFI_TAG,"connect to the AP fail");
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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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ip_event_got_ip_t* event = (ip_event_got_ip_t*) event_data;
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ESP_LOGI(WIFI_TAG, "got ip: %s",
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ip4addr_ntoa(&event->ip_info.ip));
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s_retry_num = 0;
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xEventGroupSetBits(s_wifi_event_group, WIFI_CONNECTED_BIT);
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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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s_wifi_event_group = xEventGroupCreate();
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tcpip_adapter_init();
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ESP_ERROR_CHECK(esp_event_loop_create_default());
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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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ESP_ERROR_CHECK(esp_event_handler_register(WIFI_EVENT, ESP_EVENT_ANY_ID, &net_event_handler, NULL));
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ESP_ERROR_CHECK(esp_event_handler_register(IP_EVENT, IP_EVENT_STA_GOT_IP, &net_event_handler, NULL));
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wifi_config_t wifi_config =
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{
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.sta = {
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.ssid = WIFI_SSID,
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.password = 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(ESP_IF_WIFI_STA, &wifi_config));
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ESP_ERROR_CHECK(esp_wifi_start());
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ESP_LOGI(WIFI_TAG, "wifi_init_sta finished.");
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EventBits_t bits = xEventGroupWaitBits(s_wifi_event_group,
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WIFI_CONNECTED_BIT | WIFI_FAIL_BIT,
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pdFALSE,
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pdFALSE,
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portMAX_DELAY);
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if(bits & WIFI_CONNECTED_BIT)
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ESP_LOGI(WIFI_TAG, "connected to ap");
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else if(bits & WIFI_FAIL_BIT)
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ESP_LOGI(WIFI_TAG, "Failed to connect to ap");
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else
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ESP_LOGE(WIFI_TAG, "UNEXPECTED EVENT");
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ESP_ERROR_CHECK(esp_event_handler_unregister(IP_EVENT, IP_EVENT_STA_GOT_IP, &net_event_handler));
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ESP_ERROR_CHECK(esp_event_handler_unregister(WIFI_EVENT, ESP_EVENT_ANY_ID, &net_event_handler));
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vEventGroupDelete(s_wifi_event_group);
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}
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