--- /dev/null
+/* 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*/
+
+}