ESP32作为接入点AP

esp_wifi_set_mode(WIFI_MODE_STA)
或者
esp_wifi_set_mode(WIFI_MODE_APSTA)

wifi_config_t apConfig = {
.ap = {
.ssid="<access point name>",
.ssid_len=,
.password="<password>",
.channel=,
.authmode=WIFI_AUTH_OPEN,
.ssid_hidden=,
.max_connection=,
.beacon_interval=
}
};

#include <string.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/event_groups.h"
#include "esp_system.h"
#include "esp_wifi.h"
#include "esp_event_loop.h"
#include "esp_log.h"
#include "nvs_flash.h"#include "driver/gpio.h"
#include "esp_types.h"/* FreeRTOS Task Handle -------------------------------------------------------*//* FreeRTOS Semaphore Handle --------------------------------------------------*//* FreeRTOS event group to signal when we are connected & ready to make a request */static const char *TAG = "example";//#define LED_GPIO_NUM GPIO_NUM_25
#define LED_GPIO_NUM GPIO_NUM_4//LED闪烁接口，为以后通过LED显示连接状态做拓展准备。#define CONFIG_AP_SSID "ESP32"
#define CONFIG_AP_PASSWORD "12345678"//配置AP的SSID 和passworduint8_t ApMac[];//网卡地址/**
* @brief no .
* @note no.
* @param no.
* @retval no.
*/
esp_err_t event_handler(void *ctx, system_event_t *event)//等待回调事件
{
switch (event->event_id)//对事件进行识别
{
case SYSTEM_EVENT_STA_START:
ESP_LOGI(TAG, "Connecting to AP...");
esp_wifi_connect();
break; case SYSTEM_EVENT_STA_GOT_IP:
ESP_LOGI(TAG, "Connected.");
break; case SYSTEM_EVENT_STA_DISCONNECTED:
//ESP_LOGI(TAG, "Wifi disconnected, try to connect again...");
esp_wifi_connect();
break; default:
break;
} return ESP_OK;
}/**
* @brief no .
* @note no.
* @param no.
* @retval no.
*/
void led_init( void )
{
gpio_set_direction( LED_GPIO_NUM , GPIO_MODE_OUTPUT );
}/**
* @brief no .
* @note no.
* @param no.
* @retval no.
*/
void led_task( void *pvParameters )
{
int level = ; for( ;; )
{
gpio_set_level( LED_GPIO_NUM , level);
level = !level;
vTaskDelay( / portTICK_PERIOD_MS);
}
}void app_main(void)
{
nvs_flash_init();//初始化NVS内存
led_init();
tcpip_adapter_init();//tcp/IP配置
ESP_ERROR_CHECK( esp_event_loop_init(event_handler, NULL) );//回调，当ESP32检测到某些类型的WiFi相关事件时调用。
wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();//定义一个名为cfg的wifi_init_config_t结构体。wifi_init_config_t中的参数可由menuconfig配置
ESP_ERROR_CHECK( esp_wifi_init(&cfg) );
ESP_ERROR_CHECK( esp_wifi_set_storage(WIFI_STORAGE_RAM) );//指示ESP32将这些设置记录到闪存
ESP_ERROR_CHECK( esp_wifi_set_mode(WIFI_MODE_AP) );//模式设置为AP esp_wifi_get_mac( ESP_IF_WIFI_AP , ApMac );//获取DHCP分配的IP接口的mac。 wifi_config_t ap_config = {
.ap = {
// .ssid = ssid,
.password = CONFIG_AP_PASSWORD,
.ssid_len = ,
.max_connection = ,
.authmode = WIFI_AUTH_WPA_PSK
}
};//ap接入点参数配置。 sprintf( (char *)ap_config.ap.ssid , "%s_%02X%02X" , CONFIG_AP_SSID , ApMac[] , ApMac[] ); esp_err_t tmp = esp_wifi_set_config(WIFI_IF_AP, &ap_config);
ESP_ERROR_CHECK(esp_wifi_start());
esp_wifi_connect(); xTaskCreate( &led_task, "led task", , NULL, , NULL );}

uint8 stationCount = wifi_softap_get_station_num();
os_printf("stationCount = %d\n", stationCount);
wifi_sta_list_t *stationInfo = wifi_softap_get_station_info();
if (stationInfo != NULL) {
while (stationInfo != NULL) {
os_printf("Station IP: %d.%d.%d.%d\n", IP2STR(&(stationInfo->ip)));
stationInfo = STAILQ_NEXT(stationInfo, next);
}
wifi_softap_free_station_info();
}

tcpip_adapter_init();
tcpip_adapter_dhcpc_stop();
tcpip_adapter_set_ip_info();
esp_wifi_init();
esp_wifi_set_mode();
esp_wifi_set_config();
esp_wifi_start();
esp_wifi_config();

tcpip_adapter_ip_info_t ipInfo;
IP4_ADDR(&ipInfo.ip, ,,,);
IP4_ADDR(&ipInfo.gw, ,,,);
IP4_ADDR(&ipInfo.netmask, ,,,);
tcpip_adapter_set_ip_info(TCPIP_ADAPTER_IF_STA, &ipInfo);

tcpip_adapter_ip_info_t ipInfo;
inet_pton（AF_INET，“192.168.1.99”，＆ipInfo.ip）;
inet_pton（AF_INET，“192.168.1.1”，＆ipInfo.gw）;
inet_pton（AF_INET，“255.255.255.0”，＆ipInfo.netmask）;
tcpip_adapter_set_ip_info（TCPIP_ADAPTER_IF_STA，＆ipInfo）;