101 lines
3.5 KiB
C
101 lines
3.5 KiB
C
#include "wifi.h"
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#include <string.h>
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#include "freertos/FreeRTOS.h"
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#include "esp_sntp.h"
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#include "esp_wifi.h"
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#include "esp_event.h"
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#include "esp_log.h"
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static const char *TAG = "WIFI";
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static EventGroupHandle_t s_wifi_event_group;
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static bool ntp_time_obtained = false;
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#define WIFI_CONNECTED_BIT (1 << 0)
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bool has_ntp_time_obtained_once() {
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return ntp_time_obtained;
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}
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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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esp_wifi_connect();
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ESP_LOGI(TAG, "connecting...");
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}
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else if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_DISCONNECTED) {
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esp_wifi_connect();
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ESP_LOGI(TAG,"connect to the AP fail - trying to reconnect");
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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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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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xEventGroupSetBits(s_wifi_event_group, WIFI_CONNECTED_BIT);
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}
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}
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void start_wifi() {
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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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s_wifi_event_group = xEventGroupCreate();
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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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wifi_config_t wifi_config = {
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.sta = {
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.ssid = CONFIG_WIFI_SSID,
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.password = CONFIG_WIFI_PASSWORD,
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.failure_retry_cnt = 20,
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// TODO Figure out what I actually removed here
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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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// Wait for WiFi to connect
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xEventGroupWaitBits(s_wifi_event_group, WIFI_CONNECTED_BIT, pdFALSE, pdFALSE, portMAX_DELAY);
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esp_sntp_setservername(0, "pool.ntp.org");
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esp_sntp_setoperatingmode(SNTP_OPMODE_POLL);
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sntp_set_sync_status(SNTP_SYNC_STATUS_RESET);
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sntp_set_sync_mode(SNTP_SYNC_MODE_SMOOTH);
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esp_sntp_init();
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setenv("TZ", "GMT0BST,M3.5.0/1,M10.5.0", 1);
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tzset();
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for (uint32_t i = 0; i < 20; ++i) {
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if (sntp_get_sync_status() != SNTP_SYNC_STATUS_COMPLETED) {
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ESP_LOGI(TAG, "... waiting for time update");
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vTaskDelay(1000 / portTICK_PERIOD_MS);
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}
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}
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time_t epoch;
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time(&epoch);
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struct tm *timeinfo = localtime(&epoch);
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ESP_LOGI(TAG, "Current time: %i:%i", timeinfo->tm_hour, timeinfo->tm_min);
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ntp_time_obtained = true;
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}
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