mirror of
https://github.com/Valeh2012/PersonalVotingMachine
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88 lines
2.4 KiB
C++
88 lines
2.4 KiB
C++
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/**
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* @file WiFiModule.cpp
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* @brief WiFiModule implementation file
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* */
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#include "string.h"
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#include "esp_event.h"
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#include "freertos/event_groups.h"
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#include "esp_wifi.h"
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#include "module.h"
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static const int WIFI_CONNECTED_BIT = BIT0;
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static int MAXIMUM_RETRY = 5;
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static int wifi_status = 0;
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static int s_retry_num = 0;
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/* FreeRTOS event group to signal when we are connected*/
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static EventGroupHandle_t s_wifi_event_group;
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/** Sample code to connect wifi from ESP-IDF*/
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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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if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_START) {
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esp_wifi_connect();
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} else if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_DISCONNECTED) {
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if (s_retry_num < MAXIMUM_RETRY) {
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esp_wifi_connect();
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xEventGroupClearBits(s_wifi_event_group, WIFI_CONNECTED_BIT);
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s_retry_num++;
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ESP_LOGI("wi-fi", "retry to connect to the AP");
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}
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ESP_LOGI("wi-fi","connect to the AP fail");
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} else if (event_base == IP_EVENT && event_id == IP_EVENT_STA_GOT_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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wifi_status = 1;
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ESP_LOGI("wi-fi","connected");
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}
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}
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WiFiModule::WiFiModule(char *ssid, char* pass){
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this->WIFI_SSID = ssid;
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this->WIFI_PASS = pass;
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}
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esp_err_t WiFiModule::init(){
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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, &event_handler, NULL));
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ESP_ERROR_CHECK(esp_event_handler_register(IP_EVENT, IP_EVENT_STA_GOT_IP, &event_handler, NULL));
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wifi_config_t wifi_config = {};
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memset(&wifi_config,0, sizeof(wifi_config));
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strcpy((char*)(wifi_config.sta.ssid), WIFI_SSID );
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strcpy((char*)(wifi_config.sta.password), WIFI_PASS);
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wifi_config.sta.bssid_set = false;
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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(TAG, "wifi_init_sta finished.");
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ESP_LOGI(TAG, "connect to ap SSID:%s password:%s",WIFI_SSID, WIFI_PASS);
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while(!wifi_status){
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vTaskDelay(500 / portTICK_PERIOD_MS);
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if(s_retry_num >= MAXIMUM_RETRY){
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throw "WiFi unable to connect";
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}
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}
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return ESP_OK;
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}
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esp_err_t WiFiModule::deinit(){
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return esp_wifi_deinit();
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}
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