sta2eth sample
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Outline
#include <string.h>
#include "esp_wifi.h"
#include "esp_log.h"
#include "freertos/FreeRTOS.h"
#include "freertos/event_groups.h"
#include "esp_http_server.h"
#include "dns_server.h"
TAG
s_web_server
s_flags
s_success_bit
is_provisioned()
http_get_handler(httpd_req_t *)
root
start_webserver()
start_provisioning(EventGroupHandle_t *, int, int)
Files
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SourceVuESP-IDF Framework and Examplessta2eth samplemain/manual_config.c
 
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/* * SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Unlicense OR CC0-1.0 *//* ... */ #include <string.h> #include "esp_wifi.h" #include "esp_log.h" #include "freertos/FreeRTOS.h" #include "freertos/event_groups.h" #include "esp_http_server.h" #include "dns_server.h"7 includes static const char *TAG = "NCM_configuration"; static httpd_handle_t s_web_server = NULL; static EventGroupHandle_t *s_flags = NULL; static int s_success_bit; bool is_provisioned(void) { wifi_config_t wifi_cfg; if (esp_wifi_get_config(WIFI_IF_STA, &wifi_cfg) != ESP_OK) { return false; }{...} if (strlen((const char *) wifi_cfg.sta.ssid)) { return true; }{...} return false; }{ ... } static esp_err_t http_get_handler(httpd_req_t *req) { const char page[] = "<form action=\"/\" method=\"get\"><br><br>\n" "SSID: <input type=\"text\" id=\"ssid\" name=\"ssid\"><br><br>\n" "Password: <input type=\"text\" id=\"password\" name=\"password\"><br><br>\n" " <input type=\"submit\" value=\"Connect\">" "</form>"; char *buf = NULL; 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]; wifi_config_t wifi_cfg = {}; if (httpd_query_key_value(buf, "ssid", param, sizeof(param)) == ESP_OK) { ESP_LOGI(TAG, "ssid=%s", param); strncpy((char *)wifi_cfg.sta.ssid, param, sizeof(wifi_cfg.sta.ssid)); }{...} if (httpd_query_key_value(buf, "password", param, sizeof(param)) == ESP_OK) { ESP_LOGI(TAG, "password=%s", param); strncpy((char *)wifi_cfg.sta.password, param, sizeof(wifi_cfg.sta.password)); }{...} if (strlen((char *)wifi_cfg.sta.ssid) > 0 && strlen((char *)wifi_cfg.sta.password)) { httpd_resp_set_type(req, "text/html"); esp_wifi_set_mode(WIFI_MODE_STA); if (esp_wifi_set_storage(WIFI_STORAGE_FLASH) == ESP_OK && esp_wifi_set_config(WIFI_IF_STA, &wifi_cfg) == ESP_OK) { const char wifi_configured[] = "<h1>Connecting...</h1>"; ESP_LOGI(TAG, "WiFi settings accepted!"); httpd_resp_send(req, wifi_configured, strlen(wifi_configured)); }{...} else { const char wifi_config_failed[] = "<h1>Failed to configure WiFi settings</h1>"; ESP_LOGE(TAG, "Failed to set WiFi config to flash"); httpd_resp_send(req, wifi_config_failed, strlen(wifi_config_failed)); }{...} free(buf); if (s_flags) { xEventGroupSetBits(*s_flags, s_success_bit); }{...} return ESP_OK; }{...} }{...} free(buf); }{...} httpd_resp_set_type(req, "text/html"); httpd_resp_send(req, page, sizeof(page)); return ESP_OK; }{ ... } static const httpd_uri_t root = { .uri = "/", .method = HTTP_GET, .handler = http_get_handler, }{...}; static void start_webserver(void) { httpd_config_t config = HTTPD_DEFAULT_CONFIG(); config.max_open_sockets = 3; config.lru_purge_enable = true; // Start the httpd server ESP_LOGI(TAG, "Starting server on port: '%d'", config.server_port); if (httpd_start(&s_web_server, &config) == ESP_OK) { // Set URI handlers ESP_LOGI(TAG, "Registering URI handlers"); httpd_register_uri_handler(s_web_server, &root); }{...} }{ ... } esp_err_t start_provisioning(EventGroupHandle_t *flags, int success_bit, int fail_bit) { start_webserver(); // Start the DNS server that will reply to "wifi.settings" with "usb" network interface address dns_server_config_t config = DNS_SERVER_CONFIG_SINGLE("wifi.settings" /* name */, "wired" /* USB netif ID */); start_dns_server(&config); s_flags = flags; s_success_bit = success_bit; return ESP_OK; }{ ... }
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