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- /*
- * wifi.c
- *
- * Created on: 21 Apr 2020
- * Author: Chris
- */
-
- #include "wifi.h"
-
- #define WIFI_CONNECTED_BIT BIT0
- #define WIFI_FAIL_BIT BIT1
-
- static EventGroupHandle_t s_wifi_event_group;
- static const char *TAG = "wifi station";
- static int s_retry_num = 0;
-
- static void event_handler(void* arg, esp_event_base_t event_base,
- int32_t event_id, void* event_data)
- {
- if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_START) {
- esp_wifi_connect();
- } else if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_DISCONNECTED) {
- if (s_retry_num < CONFIG_ESP_WIFI_RETRIES) {
- esp_wifi_connect();
- s_retry_num++;
- ESP_LOGI(TAG, "retry to connect to the AP");
- } else {
- xEventGroupSetBits(s_wifi_event_group, WIFI_FAIL_BIT);
- }
- ESP_LOGI(TAG,"connect to the AP fail");
- } else if (event_base == IP_EVENT && event_id == IP_EVENT_STA_GOT_IP) {
- ip_event_got_ip_t* event = (ip_event_got_ip_t*) event_data;
- ESP_LOGI(TAG, "got ip:%s",
- ip4addr_ntoa(&event->ip_info.ip));
- s_retry_num = 0;
- xEventGroupSetBits(s_wifi_event_group, WIFI_CONNECTED_BIT);
- }
- }
-
- void wifi_init_sta()
- {
- //Initialize NVS
- esp_err_t ret = nvs_flash_init();
- if (ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {
- ESP_ERROR_CHECK(nvs_flash_erase());
- ret = nvs_flash_init();
- }
- ESP_ERROR_CHECK(ret);
-
- s_wifi_event_group = xEventGroupCreate();
-
- 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));
-
- //tcpip_adapter_dhcpc_stop(TCPIP_ADAPTER_IF_STA);
- //tcpip_adapter_ip_info_t info;
- //ip4_addr_t gw;
- //gw.addr = ipaddr_addr("192.168.0.1");
- //info.gw = gw;
- //ip4_addr_t ip;
- //ip.addr = ipaddr_addr("192.168.0.110");
- //info.ip = ip;
- //ip4_addr_t netmask;
- //netmask.addr = ipaddr_addr("255.255.255.0");
- //info.netmask = netmask;
- //tcpip_adapter_sta_start(0, &info);
-
- ESP_ERROR_CHECK(esp_event_handler_register(WIFI_EVENT, ESP_EVENT_ANY_ID, &event_handler, NULL));
- ESP_ERROR_CHECK(esp_event_handler_register(IP_EVENT, IP_EVENT_STA_GOT_IP, &event_handler, NULL));
-
- wifi_config_t wifi_config = {
- .sta = {
- .ssid = CONFIG_ESP_WIFI_SSID,
- .password = CONFIG_ESP_WIFI_PASSWORD
- },
- };
- ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA) );
- ESP_ERROR_CHECK(esp_wifi_set_config(ESP_IF_WIFI_STA, &wifi_config) );
- ESP_ERROR_CHECK(esp_wifi_start() );
-
- ESP_LOGI(TAG, "wifi_init_sta finished.");
-
- /* Waiting until either the connection is established (WIFI_CONNECTED_BIT) or connection failed for the maximum
- * number of re-tries (WIFI_FAIL_BIT). The bits are set by event_handler() (see above) */
- EventBits_t bits = xEventGroupWaitBits(s_wifi_event_group,
- WIFI_CONNECTED_BIT | WIFI_FAIL_BIT,
- pdFALSE,
- pdFALSE,
- portMAX_DELAY);
-
- //tcpip_adapter_set_ip_info(TCPIP_ADAPTER_IF_STA, &info);
- /* xEventGroupWaitBits() returns the bits before the call returned, hence we can test which event actually
- * happened. */
- if (bits & WIFI_CONNECTED_BIT) {
- ESP_LOGI(TAG, "connected to ap SSID:%s",
- CONFIG_ESP_WIFI_SSID);
- } else if (bits & WIFI_FAIL_BIT) {
- ESP_LOGI(TAG, "Failed to connect to SSID:%s",
- CONFIG_ESP_WIFI_SSID);
- } else {
- ESP_LOGE(TAG, "UNEXPECTED EVENT");
- }
-
- //ESP_ERROR_CHECK(esp_event_handler_unregister(IP_EVENT, IP_EVENT_STA_GOT_IP, &event_handler));
- //ESP_ERROR_CHECK(esp_event_handler_unregister(WIFI_EVENT, ESP_EVENT_ANY_ID, &event_handler));
- //vEventGroupDelete(s_wifi_event_group);
- }
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