access-point.c

/*
 * Test being an access point.  When we run this app, watch the console and look
 * for a message of the form:
 *
 * event: SYSTEM_EVENT_AP_START
 *
 * This means that we have started being an access point.
 *
 * Now connect your WiFi client device (phone/PC) and we should see a message:
 *
 * event: SYSTEM_EVENT_AP_STACONNECTED, mac:7c:dd:90:9e:b5:62, aid:1
 *
 * This says that we have now connected.
 *
 */
#include <esp_event.h>
#include <esp_event_loop.h>
#include <esp_log.h>
#include <esp_system.h>
#include <esp_wifi.h>
#include <freertos/FreeRTOS.h>
#include <nvs_flash.h>

//static char tag[] = "access-point";

/**
 * An ESP32 WiFi event handler.
 * The types of events that can be received here are:
 *
 * SYSTEM_EVENT_AP_PROBEREQRECVED
 * SYSTEM_EVENT_AP_STACONNECTED
 * SYSTEM_EVENT_AP_STADISCONNECTED
 * SYSTEM_EVENT_AP_START
 * SYSTEM_EVENT_AP_STOP
 * SYSTEM_EVENT_SCAN_DONE
 * SYSTEM_EVENT_STA_AUTHMODE_CHANGE
 * SYSTEM_EVENT_STA_CONNECTED
 * SYSTEM_EVENT_STA_DISCONNECTED
 * SYSTEM_EVENT_STA_GOT_IP
 * SYSTEM_EVENT_STA_START
 * SYSTEM_EVENT_STA_STOP
 * SYSTEM_EVENT_WIFI_READY
 */
esp_err_t esp32_wifi_eventHandler(void *ctx, system_event_t *event) {
	// Your event handling code here...
	return ESP_OK;
}

void access_point_task(void *ignore) {
	nvs_flash_init();
	tcpip_adapter_init();
	ESP_ERROR_CHECK( esp_event_loop_init(esp32_wifi_eventHandler, NULL) );
	wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
	ESP_ERROR_CHECK( esp_wifi_init(&cfg) );
	ESP_ERROR_CHECK( esp_wifi_set_storage(WIFI_STORAGE_RAM) );
	ESP_ERROR_CHECK( esp_wifi_set_mode(WIFI_MODE_AP) );
	wifi_config_t apConfig = {
	   .ap = {
	      .ssid="ESP32_TESTAP",
	      .ssid_len=0,
	      .password="",
	      .channel=0,
	      .authmode=WIFI_AUTH_OPEN,
	      .ssid_hidden=0,
	      .max_connection=4,
	      .beacon_interval=100
	   }
	};
	ESP_ERROR_CHECK( esp_wifi_set_config(WIFI_IF_AP, &apConfig) );
	ESP_ERROR_CHECK( esp_wifi_start() );
	vTaskDelete(NULL);
}