add WiFi SSID/password and NVS erase options to menuconfig

main/Kconfig

@@ -20,4 +20,34 @@ menu "espScope Configuration"
             a file called "./boards/<your board name>.h" and set this to "./boards/your board name.h"
             Default is boards/default.h which is empty.
 
+    config WIFI_ERASE_NVS
+        bool "Erase NVS WiFi config on boot"
+        default n
+        help
+            Enable to erase stored WiFi credentials from NVS at every boot.
+            Useful when you want to always use the credentials set in
+            menuconfig instead of previously saved ones.
+
+    config WIFI_CONFIGURE
+        bool "Configure WiFi credentials"
+        default n
+        help
+            Enable to set WiFi SSID and Password in menuconfig.
+            If disabled (default), device boots in SoftAP mode
+            for over-the-air provisioning.
+
+    config WIFI_SSID
+        string "WiFi SSID"
+        depends on WIFI_CONFIGURE
+        default ""
+        help
+            WiFi SSID for Station mode.
+
+    config WIFI_PASSWORD
+        string "WiFi Password"
+        depends on WIFI_CONFIGURE
+        default ""
+        help
+            WiFi password for the configured SSID.
+
 endmenu

main/wifi_manager.c

@@ -322,7 +322,12 @@ bool wifi_manager_init_wifi(void) {
     esp_event_handler_instance_register(WIFI_EVENT, ESP_EVENT_ANY_ID, &event_handler, NULL, NULL);
     esp_event_handler_instance_register(IP_EVENT, IP_EVENT_STA_GOT_IP, &event_handler, NULL, NULL);
 
-    // 2. Check NVS
+    // 2. Erase NVS on boot if configured
+#if CONFIG_WIFI_ERASE_NVS
+    wifi_manager_erase_config();
+#endif
+
+    // 3. Check NVS
     nvs_handle_t nvs_handle;
     char pass[64] = {0};
     size_t ssid_len = sizeof(ssid);
@@ -339,14 +344,19 @@ bool wifi_manager_init_wifi(void) {
         nvs_close(nvs_handle);
     }
 
-    // 3. Start Mode
+    // 4. Start Mode
     if (has_creds && strlen(ssid) > 0) {
         wifi_init_station(ssid, pass);
         return false;
-    } else {
-        wifi_init_softap();
-        return true;
     }
+#if CONFIG_WIFI_CONFIGURE
+    ESP_LOGI(TAG, "Using Kconfig WiFi credentials for SSID=%s", CONFIG_WIFI_SSID);
+    wifi_init_station(CONFIG_WIFI_SSID, CONFIG_WIFI_PASSWORD);
+    return false;
+#else
+    wifi_init_softap();
+    return true;
+#endif
 }
 
 void wifi_manager_erase_config(void) {