132 lines
4.0 KiB
C
132 lines
4.0 KiB
C
#include "string.h"
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/* ESP drivers */
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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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/* FreeRTOS */
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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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/* App specific */
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#include "app_wifi.h"
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#define LOG_TAG "APP_WIFI"
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#define APP_WIFI_AUTH_MODE WIFI_AUTH_WPA2_PSK
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#define APP_WIFI_EVENT_GROUP_EVENT_CONNECTED (1 << 0U)
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EventGroupHandle_t s_app_wifi_event_group;
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static uint8_t s_retries = 0U;
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static esp_netif_t *s_sta_netif;
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static void app_wifi_event_handler(void *arg, esp_event_base_t event_base, int32_t event_id, void *event_data);
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esp_err_t app_wifi_init(void) {
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s_app_wifi_event_group = xEventGroupCreate();
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if (s_app_wifi_event_group == NULL) {
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return ESP_FAIL;
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}
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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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s_sta_netif = esp_netif_create_default_wifi_sta();
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wifi_init_config_t wifi_init_cfg = WIFI_INIT_CONFIG_DEFAULT();
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ESP_ERROR_CHECK(esp_wifi_init(&wifi_init_cfg));
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esp_event_handler_instance_t inst_any_id;
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esp_event_handler_instance_t inst_got_ip;
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ESP_ERROR_CHECK(
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esp_event_handler_instance_register(WIFI_EVENT, ESP_EVENT_ANY_ID, app_wifi_event_handler, NULL, &inst_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, app_wifi_event_handler, NULL, &inst_got_ip));
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wifi_config_t wifi_config;
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bool has_changes = false;
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ESP_ERROR_CHECK(esp_wifi_get_config(WIFI_IF_STA, &wifi_config));
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if (strncmp((char *)wifi_config.sta.ssid, CONFIG_APP_WIFI_SSID, strlen(CONFIG_APP_WIFI_SSID)) != 0) {
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snprintf((char *)wifi_config.sta.ssid, 32, CONFIG_APP_WIFI_SSID);
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has_changes = true;
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}
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if (strncmp((char *)wifi_config.sta.password, CONFIG_APP_WIFI_PASSWORD, strlen(CONFIG_APP_WIFI_PASSWORD)) != 0) {
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snprintf((char *)wifi_config.sta.password, 64, CONFIG_APP_WIFI_PASSWORD);
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has_changes = true;
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}
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if (wifi_config.sta.threshold.authmode != APP_WIFI_AUTH_MODE) {
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wifi_config.sta.threshold.authmode = APP_WIFI_AUTH_MODE;
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has_changes = true;
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}
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ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA));
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if (has_changes) {
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ESP_ERROR_CHECK(esp_wifi_set_config(WIFI_IF_STA, &wifi_config));
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ESP_LOGI(LOG_TAG, "WiFi config has changed, setting new config.");
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}
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ESP_ERROR_CHECK(esp_wifi_start());
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ESP_LOGI(LOG_TAG, "WiFi initialized, heap free: %lu.", esp_get_free_heap_size());
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return ESP_OK;
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}
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esp_err_t app_wifi_deinit(void) {
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esp_wifi_stop();
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esp_wifi_deinit();
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esp_netif_destroy_default_wifi(s_sta_netif);
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esp_event_loop_delete_default();
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vEventGroupDelete(s_app_wifi_event_group);
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return ESP_OK;
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}
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app_wifi_event_t app_wifi_wait_event(uint32_t max_timeout_ms) {
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EventBits_t bits = xEventGroupWaitBits(s_app_wifi_event_group, APP_WIFI_EVENT_GROUP_EVENT_CONNECTED, pdFALSE,
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pdFALSE, pdMS_TO_TICKS(max_timeout_ms));
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if (bits & APP_WIFI_EVENT_GROUP_EVENT_CONNECTED) {
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return APP_WIFI_EVENT_CONNECTED;
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} else {
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return APP_WIFI_EVENT_TIMEOUT;
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}
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}
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static void app_wifi_event_handler(void *arg, esp_event_base_t event_base, int32_t event_id, void *event_data) {
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/* Event handler */
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if (event_base == WIFI_EVENT) {
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if (event_id == WIFI_EVENT_STA_START) {
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esp_wifi_connect();
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}
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if (event_id == WIFI_EVENT_STA_DISCONNECTED) {
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esp_wifi_connect();
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ESP_LOGI(LOG_TAG, "Disconnected");
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}
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} else if (event_base == IP_EVENT) {
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if (event_id == IP_EVENT_STA_GOT_IP) {
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xEventGroupSetBits(s_app_wifi_event_group, APP_WIFI_EVENT_GROUP_EVENT_CONNECTED);
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s_retries = 0U;
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ip_event_got_ip_t *event = event_data;
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ESP_LOGI(LOG_TAG, "Connected, IP address: " IPSTR, IP2STR(&event->ip_info.ip));
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}
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}
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}
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