使用ESP-IDF写一段程序,它将启动Web服务器,并在访问"/wifi"路径时显示一个表单,允许用户输入WiFi名称和密码:
时间: 2023-01-28 21:02:28 浏览: 121
以下是使用 ESP-IDF 写一段程序的示例代码,它将启动 Web 服务器,并在访问 "/wifi" 路径时显示一个表单,允许用户输入 WiFi 名称和密码:
```
#include "esp_system.h"
#include "esp_http_server.h"
#define TAG "wifi_form"
static const httpd_uri_t wifi_uri = {
.uri = "/wifi",
.method = HTTP_GET,
.handler = wifi_form_handler,
};
esp_err_t wifi_form_handler(httpd_req_t *req)
{
char* buf;
size_t buf_len;
buf_len = httpd_req_get_url_query_len(req) + 1;
if (buf_len > 1) {
buf = malloc(buf_len);
if (httpd_req_get_url_query_str(req, buf, buf_len) == ESP_OK) {
ESP_LOGI(TAG, "Found URL query => %s", buf);
char param[32];
if (httpd_query_key_value(buf, "ssid", param, sizeof(param)) == ESP_OK) {
ESP_LOGI(TAG, "Found URL query parameter => ssid=%s", param);
}
if (httpd_query_key_value(buf, "password", param, sizeof(param)) == ESP_OK) {
ESP_LOGI(TAG, "Found URL query parameter => password=%s", param);
}
}
free(buf);
}
const char* resp_str = "<html><body><form action='/wifi' method='get'>"
"WiFi SSID: <input type='text' name='ssid'>"
"WiFi Password: <input type='text' name='password'>"
"<br><br>"
"<button type='submit'>Connect</button>"
"</form></body></html>";
httpd_resp_send(req, resp_str, strlen(resp_str));
return ESP_OK;
}
void app_main()
{
httpd_config_t config = HTTPD_DEFAULT_CONFIG();
httpd_handle_t server = NULL;
if (httpd_start(&server, &config) == ESP_OK) {
httpd_register_uri_handler(server, &wifi_uri);
}
}
```
在上面的代码中,wifi_form_handler 函数处理 "/wifi" 路径的请求。它会读取 URL 查询字符串,然后使