Get WiFi connected on ESP32

shroom-controller/main/.gitignore

@@ -0,0 +1 @@
+wifi_private.h

shroom-controller/main/CMakeLists.txt

@@ -1,5 +1,8 @@
 idf_component_register(
   SRCS "main.c"
   INCLUDE_DIRS "include"
-  REQUIRES esp_driver_gpio esp_wifi
+  REQUIRES 
+    esp_driver_gpio
+    esp_wifi
+    nvs_flash
 )

shroom-controller/main/main.c

@@ -1,2 +1,71 @@
-void app_main(void) {
+#include "esp_err.h"
+#include "esp_event_base.h"
+#include "esp_log.h"
+#include "esp_netif_types.h"
+#include "esp_wifi.h"
+#include "esp_wifi_default.h"
+
+#include "nvs_flash.h"
+
+#include "wifi_private.h"
+
+const char TAG[] = "main";
+
+static int s_retry_num = 0;
+static void event_handler(void* arg, esp_event_base_t event_base,
+                          int32_t event_id, void* event_data) {
+    if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_START) {
+        esp_wifi_connect();
+    } else if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_DISCONNECTED) {
+        if (s_retry_num < 5) {
+            esp_wifi_connect();
+            s_retry_num++;
+            ESP_LOGI(TAG, "retry to connect to the AP");
+        } else {
+            //xEventGroupSetBits(s_wifi_event_group, WIFI_FAIL_BIT);
+        }
+        ESP_LOGI(TAG,"connect to the AP fail");
+    } else if (event_base == IP_EVENT && event_id == IP_EVENT_STA_GOT_IP) {
+        ip_event_got_ip_t* event = (ip_event_got_ip_t*) event_data;
+        ESP_LOGI(TAG, "got ip:" IPSTR, IP2STR(&event->ip_info.ip));
+        s_retry_num = 0;
+        //xEventGroupSetBits(s_wifi_event_group, WIFI_CONNECTED_BIT);
+    }
+}
+
+void app_main(void) {
+  esp_err_t ret = nvs_flash_init();
+  if (ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {
+    ESP_ERROR_CHECK(nvs_flash_erase());
+    ret = nvs_flash_init();
+  }
+  ESP_ERROR_CHECK(ret);
+
+  wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
+
+  ESP_ERROR_CHECK(esp_netif_init());
+  ESP_ERROR_CHECK(esp_event_loop_create_default());
+  esp_netif_create_default_wifi_sta();
+
+  esp_event_handler_instance_t instance_any_id;
+  esp_event_handler_instance_t instance_got_ip;
+
+  ESP_ERROR_CHECK(esp_event_handler_instance_register(
+    WIFI_EVENT, ESP_EVENT_ANY_ID, &event_handler, NULL, &instance_any_id));
+  ESP_ERROR_CHECK(esp_event_handler_instance_register(
+    IP_EVENT, IP_EVENT_STA_GOT_IP, &event_handler, NULL, &instance_got_ip));
+
+  ESP_ERROR_CHECK(esp_wifi_init(&cfg));
+  ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA));
+
+  wifi_config_t wifi_config = {
+    .sta = {
+      .ssid = WIFI_SSID,
+      .password = WIFI_PASS,
+      .threshold.authmode = WIFI_AUTH_WPA_WPA2_PSK,
+    },
+  };
+
+  ESP_ERROR_CHECK(esp_wifi_set_config(WIFI_IF_STA, &wifi_config));
+  ESP_ERROR_CHECK(esp_wifi_start());
 }