Changed wifi provisioning scan method

Signed-off-by: sanket.wadekar <sanket.wadekar@espressif.com>

components/wifi_provisioning/Kconfig

@@ -45,4 +45,16 @@ menu "Wi-Fi Provisioning Manager"
         depends on WIFI_PROV_KEEP_BLE_ON_AFTER_PROV
         default y
 
+    choice WIFI_PROV_STA_SCAN_METHOD
+        bool "Wifi Provisioning Scan Method"
+        default WIFI_PROV_STA_ALL_CHANNEL_SCAN
+        config WIFI_PROV_STA_ALL_CHANNEL_SCAN
+            bool "All Channel Scan"
+            help
+                    Scan will end after scanning the entire channel. This option is useful in Mesh WiFi Systems.
+        config WIFI_PROV_STA_FAST_SCAN
+            bool "Fast Scan"
+            help
+                    Scan will end after an AP matching with the SSID has been detected.
+    endchoice
 endmenu

components/wifi_provisioning/src/handlers.c

@@ -111,6 +111,13 @@ static esp_err_t set_config_handler(const wifi_prov_config_set_data_t *req_data,
     /* Using strlcpy allows both max passphrase length (63 bytes) and ensures null termination
      * because size of wifi_cfg->sta.password is 64 bytes (1 extra byte for null character) */
     strlcpy((char *) wifi_cfg->sta.password, req_data->password, sizeof(wifi_cfg->sta.password));
+
+#ifdef CONFIG_WIFI_PROV_STA_ALL_CHANNEL_SCAN
+    wifi_cfg->sta.scan_method = WIFI_ALL_CHANNEL_SCAN;
+#else /* CONFIG_WIFI_PROV_STA_FAST_SCAN */
+    wifi_cfg->sta.scan_method = WIFI_FAST_SCAN;
+#endif
+
     return ESP_OK;
 }