Remove simple_wifi example

main/simple_wifi.c

-/* Simple WiFi Example
-
-   This example code is in the Public Domain (or CC0 licensed, at your option.)
-
-   Unless required by applicable law or agreed to in writing, this
-   software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
-   CONDITIONS OF ANY KIND, either express or implied.
-*/
-#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 "lwip/err.h"
-#include "lwip/sys.h"
-
-/* The examples use simple WiFi configuration that you can set via
-   'make menuconfig'.
-
-   If you'd rather not, just change the below entries to strings with
-   the config you want - ie #define EXAMPLE_WIFI_SSID "mywifissid"
-*/
-#define EXAMPLE_ESP_WIFI_MODE_AP   CONFIG_ESP_WIFI_MODE_AP //TRUE:AP FALSE:STA
-#define EXAMPLE_ESP_WIFI_SSID      CONFIG_ESP_WIFI_SSID
-#define EXAMPLE_ESP_WIFI_PASS      CONFIG_ESP_WIFI_PASSWORD
-#define EXAMPLE_MAX_STA_CONN       CONFIG_MAX_STA_CONN
-
-/* FreeRTOS event group to signal when we are connected*/
-static EventGroupHandle_t wifi_event_group;
-
-/* The event group allows multiple bits for each event,
-   but we only care about one event - are we connected
-   to the AP with an IP? */
-const int WIFI_CONNECTED_BIT = BIT0;
-
-static const char *TAG = "simple wifi";
-
-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_GOT_IP:
-        ESP_LOGI(TAG, "got ip:%s",
-                 ip4addr_ntoa(&event->event_info.got_ip.ip_info.ip));
-        xEventGroupSetBits(wifi_event_group, WIFI_CONNECTED_BIT);
-        break;
-    case SYSTEM_EVENT_AP_STACONNECTED:
-        ESP_LOGI(TAG, "station:"MACSTR" join, AID=%d",
-                 MAC2STR(event->event_info.sta_connected.mac),
-                 event->event_info.sta_connected.aid);
-        break;
-    case SYSTEM_EVENT_AP_STADISCONNECTED:
-        ESP_LOGI(TAG, "station:"MACSTR"leave, AID=%d",
-                 MAC2STR(event->event_info.sta_disconnected.mac),
-                 event->event_info.sta_disconnected.aid);
-        break;
-    case SYSTEM_EVENT_STA_DISCONNECTED:
-        esp_wifi_connect();
-        xEventGroupClearBits(wifi_event_group, WIFI_CONNECTED_BIT);
-        break;
-    default:
-        break;
-    }
-    return ESP_OK;
-}
-
-void wifi_init_softap()
-{
-    wifi_event_group = xEventGroupCreate();
-
-    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 = {
-        .ap = {
-            .ssid = EXAMPLE_ESP_WIFI_SSID,
-            .ssid_len = strlen(EXAMPLE_ESP_WIFI_SSID),
-            .password = EXAMPLE_ESP_WIFI_PASS,
-            .max_connection = EXAMPLE_MAX_STA_CONN,
-            .authmode = WIFI_AUTH_WPA_WPA2_PSK
-        },
-    };
-    if (strlen(EXAMPLE_ESP_WIFI_PASS) == 0) {
-        wifi_config.ap.authmode = WIFI_AUTH_OPEN;
-    }
-
-    ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_AP));
-    ESP_ERROR_CHECK(esp_wifi_set_config(ESP_IF_WIFI_AP, &wifi_config));
-    ESP_ERROR_CHECK(esp_wifi_start());
-
-    ESP_LOGI(TAG, "wifi_init_softap finished.SSID:%s password:%s",
-             EXAMPLE_ESP_WIFI_SSID, EXAMPLE_ESP_WIFI_PASS);
-}
-
-void wifi_init_sta()
-{
-    wifi_event_group = xEventGroupCreate();
-
-    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 = EXAMPLE_ESP_WIFI_SSID,
-            .password = EXAMPLE_ESP_WIFI_PASS
-        },
-    };
-
-    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() );
-
-    ESP_LOGI(TAG, "wifi_init_sta finished.");
-    ESP_LOGI(TAG, "connect to ap SSID:%s password:%s",
-             EXAMPLE_ESP_WIFI_SSID, EXAMPLE_ESP_WIFI_PASS);
-}
-
-void app_main()
-{
-    //Initialize NVS
-    esp_err_t ret = nvs_flash_init();
-    if (ret == ESP_ERR_NVS_NO_FREE_PAGES) {
-      ESP_ERROR_CHECK(nvs_flash_erase());
-      ret = nvs_flash_init();
-    }
-    ESP_ERROR_CHECK(ret);
-    
-#if EXAMPLE_ESP_WIFI_MODE_AP
-    ESP_LOGI(TAG, "ESP_WIFI_MODE_AP");
-    wifi_init_softap();
-#else
-    ESP_LOGI(TAG, "ESP_WIFI_MODE_STA");
-    wifi_init_sta();
-#endif /*EXAMPLE_ESP_WIFI_MODE_AP*/
-
-}