TCPIP_ADAPTER_IF_AP
时间: 2023-12-13 16:04:38 浏览: 74
TCPIP_ADAPTER_IF_AP是一个枚举类型,表示TCP/IP适配器的接口类型,其中AP表示接入点,即无线接入点。在ESP32中,可以使用TCP/IP适配器API来配置和管理网络接口。例如,可以使用tcpip_adapter_init()函数初始化TCP/IP协议栈,然后使用tcpip_adapter_dhcps_stop()和tcpip_adapter_set_ip_info()函数设置IP地址和网关等信息,最后使用tcpip_adapter_dhcps_start()函数启动DHCP服务器。在这些函数中,需要指定TCP/IP适配器的接口类型,例如TCPIP_ADAPTER_IF_AP表示无线接入点。
相关问题
esp32 idf ap tcp server
The ESP32 IDF (Integrated Development Framework) allows developers to create a TCP server on an ESP32 device. Here are the basic steps to create a TCP server:
1. Include the required libraries and initialize the network stack.
```c
#include <stdio.h>
#include <string.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "esp_system.h"
#include "esp_wifi.h"
#include "esp_event.h"
#include "esp_log.h"
#include "tcpip_adapter.h"
/* Initialize Wi-Fi */
static esp_err_t event_handler(void *ctx, system_event_t *event)
{
switch(event->event_id) {
case SYSTEM_EVENT_STA_START:
esp_wifi_connect();
break;
case SYSTEM_EVENT_STA_DISCONNECTED:
esp_wifi_connect();
break;
default:
break;
}
return ESP_OK;
}
void wifi_init_sta(void)
{
tcpip_adapter_init();
ESP_ERROR_CHECK(esp_event_loop_init(event_handler, NULL));
wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
ESP_ERROR_CHECK(esp_wifi_init(&cfg));
wifi_config_t wifi_config = {
.sta = {
.ssid = "your-ssid",
.password = "your-password",
},
};
ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA));
ESP_ERROR_CHECK(esp_wifi_set_config(ESP_IF_WIFI_STA, &wifi_config));
ESP_ERROR_CHECK(esp_wifi_start());
}
```
2. Create a socket and bind it to a local IP address and port number.
```c
/* Create a TCP server socket */
int server_socket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (server_socket == -1) {
ESP_LOGE(TAG, "Failed to create socket: errno %d", errno);
return;
}
/* Bind the socket to a port */
struct sockaddr_in server_address;
server_address.sin_family = AF_INET;
server_address.sin_addr.s_addr = htonl(INADDR_ANY);
server_address.sin_port = htons(80);
int err = bind(server_socket, (struct sockaddr *)&server_address, sizeof(server_address));
if (err != 0) {
ESP_LOGE(TAG, "Socket binding failed: errno %d", errno);
close(server_socket);
return;
}
```
3. Listen for incoming connections.
```c
/* Listen for incoming connections */
err = listen(server_socket, 1);
if (err != 0) {
ESP_LOGE(TAG, "Error occurred while listening for incoming connections: errno %d", errno);
close(server_socket);
return;
}
```
4. Accept incoming connections and handle client requests.
```c
/* Accept incoming connections and handle client requests */
while (1) {
struct sockaddr_in client_address;
socklen_t client_address_len = sizeof(client_address);
int client_socket = accept(server_socket, (struct sockaddr *)&client_address, &client_address_len);
if (client_socket == -1) {
ESP_LOGE(TAG, "Error occurred while accepting incoming connection: errno %d", errno);
continue;
}
char request_buffer[1024] = {0};
read(client_socket, request_buffer, sizeof(request_buffer)-1);
ESP_LOGI(TAG, "Received request: %s", request_buffer);
char response_buffer[1024] = {0};
sprintf(response_buffer, "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n<html><body><h1>Hello, World!</h1></body></html>\r\n");
write(client_socket, response_buffer, strlen(response_buffer));
shutdown(client_socket, 0);
close(client_socket);
}
```
In this example, we create a simple HTTP server that responds with "Hello, World!" to any incoming request. You can modify the response to suit your needs.
Note that this is a very basic example and you'll need to add error handling, thread safety, and other features to make it production-ready.
我现在想大家一个网络,用stm32+9266,一共有三套这样的设备,其中一套作为ap,另外两套作为sta模式接入这个ap,请给出详细的代码
在STM32微控制器上配合ESP8266模块构建一个支持AP和STA模式的Wi-Fi网络系统,通常需要使用嵌入式WiFi库如Espressif IoT SDK。以下是粗略的示例代码结构,具体实现可能因所选的SDK、框架和库的不同而有所差异:
```c
#include "esp_wifi.h"
#include "esp_event_loop.h"
// AP配置
typedef struct {
char ssid[32]; // WiFi SSID
char password[32]; // WiFi密码
} ApConfig;
// STA配置
typedef struct {
char ap_ssid[32]; // 连接的AP SSID
char ap_password[32]; // AP的密码
char station_ssid[32]; // 自己设置的SSID用于STA模式
char station_password[32]; // Station模式下的密码
} StaConfig;
ApConfig ap_config = {"Your_AP_Name", "Your_AP_Pass"};
StaConfig sta_configs[2] = {{"Other_AP_Name", "Other_AP_Pass", "Station_SSID_1", "Station_Password_1"},
{"Other_AP_Name_2", "Other_AP_Pass_2", "Station_SSID_2", "Station_Password_2"}};
void wifi_ap(void)
{
esp_err_t err;
tcpip_adapter_init();
wifi_event_handler_register(WIFI_EVENT_AP_STA_CONNECTED, wifi_ap_connected);
wifi_event_handler_register(WIFI_EVENT_AP_STA_DISCONNECTED, wifi_ap_disconnected);
ESP_LOGI(TAG, "Setting up access point...");
err = esp_wifi_set_mode(WIFI_MODE_AP_STA);
if (err != ESP_OK) {
ESP_LOGE(TAG, "Failed to set mode AP_STA, error code: %d", err);
return;
}
err = esp_wifi_set_config(ESP_IF_WIFI_AP, &ap_config);
if (err != ESP_OK) {
ESP_LOGE(TAG, "Failed to configure AP, error code: %d", err);
return;
}
}
void wifi_ap_connected(void *ctx, system_event_t *event)
{
ESP_LOGI(TAG, "Connected to a station");
}
void wifi_ap_disconnected(void *ctx, system_event_t *event)
{
ESP_LOGI(TAG, "Disconnected from a station");
}
void wifi_sta(void)
{
for (int i = 0; i < 2; ++i) {
esp_netif_t *sta_if = esp_netif_create_default_standalone(&sta_configs[i].station_ssid, &sta_configs[i].station_password);
if (!sta_if) {
ESP_LOGE(TAG, "Failed to create sta interface");
continue;
}
err = esp_netif_start(sta_if);
if (err != ESP_OK) {
ESP_LOGE(TAG, "Failed to start sta interface, error code: %d", err);
esp_netif_destroy(sta_if);
continue;
}
esp_wifi_connect();
}
}
void app_main()
{
wifi_ap(); // 启动AP模式
wifi_sta(); // 遍历STA配置,尝试连接到其他AP
}
```
注意:这只是一个基本的示例,并未包含错误处理和状态检查。实际项目中你需要添加适当的错误处理代码以及网络状态检测(如定时检查是否成功连接)。同时,确保你的硬件连接正确并调整了必要的固件设置。
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