120 lines
3.8 KiB
C
120 lines
3.8 KiB
C
#include "wifi_handler.h"
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#include "esp_event.h"
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#include "esp_log.h"
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#include "esp_system.h"
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#include "esp_wifi.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/event_groups.h"
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#include "freertos/task.h"
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#include "led_status.h"
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#include "lwip/err.h"
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#include "lwip/sys.h"
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#include "nvs_flash.h"
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#include "sdkconfig.h"
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// Event group to signal when we are connected
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static EventGroupHandle_t s_wifi_event_group;
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// The bits for the 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 const char *TAG = "wifi_handler";
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static int s_retry_num = 0;
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static void 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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led_behavior_t led0_behavior = {
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.mode = LED_MODE_BLINK, .color = {.r = 0, .g = 50, .b = 0}, .on_time_ms = 200, .off_time_ms = 200};
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led_status_set_behavior(0, led0_behavior);
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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 < CONFIG_WIFI_CONNECT_RETRIES)
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{
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led_behavior_t led0_behavior = {
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.mode = LED_MODE_BLINK, .color = {.r = 0, .g = 50, .b = 0}, .on_time_ms = 200, .off_time_ms = 200};
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led_status_set_behavior(0, led0_behavior);
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esp_wifi_connect();
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s_retry_num++;
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ESP_LOGI(TAG, "Retrying 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(TAG, "Failed to connect to the AP");
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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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led_behavior_t led0_behavior = {
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.mode = LED_MODE_SOLID,
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.color = {.r = 0, .g = 50, .b = 0},
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};
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led_status_set_behavior(0, led0_behavior);
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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 address:" IPSTR, IP2STR(&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()
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{
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s_wifi_event_group = xEventGroupCreate();
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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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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(
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esp_event_handler_instance_register(WIFI_EVENT, ESP_EVENT_ANY_ID, &event_handler, NULL, &instance_any_id));
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ESP_ERROR_CHECK(
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esp_event_handler_instance_register(IP_EVENT, IP_EVENT_STA_GOT_IP, &event_handler, NULL, &instance_got_ip));
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wifi_config_t wifi_config = {
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.sta =
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{
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.ssid = CONFIG_WIFI_SSID,
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.password = CONFIG_WIFI_PASSWORD,
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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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ESP_LOGI(TAG, "wifi_init_sta finished.");
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/* Waiting until either the connection is established (WIFI_CONNECTED_BIT) or
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connection failed for the maximum number of retries (WIFI_FAIL_BIT). The bits are set by event_handler() */
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EventBits_t bits =
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xEventGroupWaitBits(s_wifi_event_group, WIFI_CONNECTED_BIT | WIFI_FAIL_BIT, pdFALSE, pdFALSE, portMAX_DELAY);
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if (bits & WIFI_CONNECTED_BIT)
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{
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ESP_LOGI(TAG, "Connected to AP SSID:%s", CONFIG_WIFI_SSID);
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}
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else if (bits & WIFI_FAIL_BIT)
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{
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ESP_LOGI(TAG, "Failed to connect to SSID:%s", CONFIG_WIFI_SSID);
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}
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else
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{
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ESP_LOGE(TAG, "UNERWARTETES EVENT");
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}
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}
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