diff --git a/platformio.ini b/platformio.ini
index 7b50617..4fc3701 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -14,10 +14,11 @@ board = ttgo-t-watch
 framework = arduino
 board_build.f_flash = 80000000L
 monitor_speed = 115200
+monitor_filters =
+    default
+    esp32_exception_decoder
 build_flags =
-;    -DCORE_DEBUG_LEVEL=3
-    -DBOARD_HAS_PSRAM
-    -mfix-esp32-psram-cache-issue
+    -DCORE_DEBUG_LEVEL=3
 src_filter =
     +<*>
 lib_deps = 
@@ -25,5 +26,4 @@ lib_deps =
     ESP Async WebServer@>=1.2.0
     AsyncTCP@>=1.1.1
     ArduinoJson@>=6.15.2
-    ESP32SSPD@>=1.1.0
-;monitor_filters= default, esp32_exception_decoder
\ No newline at end of file
+    ESP32SSPD@>=1.1.0
\ No newline at end of file
diff --git a/src/app/weather/weather.cpp b/src/app/weather/weather.cpp
index 5ed1beb..6f6ff2f 100644
--- a/src/app/weather/weather.cpp
+++ b/src/app/weather/weather.cpp
@@ -36,6 +36,7 @@
 #include "gui/statusbar.h"
 #include "gui/keyboard.h"
 #include "hardware/motor.h"
+#include "hardware/powermgm.h"
 
 EventGroupHandle_t weather_widget_event_handle = NULL;
 TaskHandle_t _weather_widget_sync_Task;
diff --git a/src/app/weather/weather_forecast.cpp b/src/app/weather/weather_forecast.cpp
index 0c220db..ce1e090 100644
--- a/src/app/weather/weather_forecast.cpp
+++ b/src/app/weather/weather_forecast.cpp
@@ -33,6 +33,8 @@
 #include "gui/statusbar.h"
 #include "gui/keyboard.h"
 
+#include "hardware/powermgm.h"
+
 EventGroupHandle_t weather_forecast_event_handle = NULL;
 TaskHandle_t _weather_forecast_sync_Task;
 void weather_forecast_sync_Task( void * pvParameters );
diff --git a/src/config.h b/src/config.h
index 901daa4..8a62517 100644
--- a/src/config.h
+++ b/src/config.h
@@ -26,11 +26,12 @@
 
     #define LILYGO_WATCH_2020_V1             //To use T-Watch2020, please uncomment this line
     #define LILYGO_WATCH_LVGL                   //To use LVGL, you need to enable the macro LVGL
+    #define TWATCH_USE_PSRAM_ALLOC_LVGL
     #include <LilyGoWatch.h>
 
     /*
     * firmeware version string
     */
-    #define __FIRMWARE__            "2020080702"
+    #define __FIRMWARE__            "2020081004"
 
 #endif // _CONFIG_H
diff --git a/src/gui/gui.cpp b/src/gui/gui.cpp
index e1a463b..725f6f3 100644
--- a/src/gui/gui.cpp
+++ b/src/gui/gui.cpp
@@ -88,7 +88,12 @@ void gui_setup(void)
  *
  */
 void gui_loop( TTGOClass *ttgo ) {
-    // if we run in silence mode 
+    // if we run in silence mode    
+    if ( powermgm_get_event( POWERMGM_SILENCE_WAKEUP ) &&!powermgm_get_event( POWERMGM_STANDBY ) ) {
+        log_e("error while silence standby");
+        while(1);
+    }
+
     if ( powermgm_get_event( POWERMGM_SILENCE_WAKEUP ) ) {
         if ( lv_disp_get_inactive_time(NULL) < display_get_timeout() * 1000 ) {
             lv_task_handler();
diff --git a/src/gui/mainbar/setup_tile/update/update.cpp b/src/gui/mainbar/setup_tile/update/update.cpp
index 80321a5..33634e4 100644
--- a/src/gui/mainbar/setup_tile/update/update.cpp
+++ b/src/gui/mainbar/setup_tile/update/update.cpp
@@ -33,6 +33,7 @@
 #include "gui/mainbar/setup_tile/setup.h"
 #include "gui/statusbar.h"
 #include "hardware/display.h"
+#include "hardware/powermgm.h"
 
 EventGroupHandle_t update_event_handle = NULL;
 TaskHandle_t _update_Task;
diff --git a/src/gui/mainbar/setup_tile/wlan_settings/wlan_settings.cpp b/src/gui/mainbar/setup_tile/wlan_settings/wlan_settings.cpp
index 590f73d..f80c16c 100644
--- a/src/gui/mainbar/setup_tile/wlan_settings/wlan_settings.cpp
+++ b/src/gui/mainbar/setup_tile/wlan_settings/wlan_settings.cpp
@@ -292,8 +292,10 @@ static void exit_wifi_password_event_cb( lv_obj_t * obj, lv_event_t event ) {
 }
 
 lv_obj_t *wifi_autoon_onoff;
+lv_obj_t *wifi_webserver_onoff;
 static void wps_start_event_handler( lv_obj_t * obj, lv_event_t event );
 static void wifi_autoon_onoff_event_handler( lv_obj_t * obj, lv_event_t event );
+static void wifi_webserver_onoff_event_handler( lv_obj_t * obj, lv_event_t event );
 
 void wlan_setup_tile_setup( uint32_t wifi_setup_tile_num ) {
     // get an app tile and copy mainstyle
@@ -334,9 +336,25 @@ void wlan_setup_tile_setup( uint32_t wifi_setup_tile_num ) {
     lv_label_set_text( wifi_autoon_label, "enable on wakeup");
     lv_obj_align( wifi_autoon_label, wifi_autoon_onoff_cont, LV_ALIGN_IN_LEFT_MID, 5, 0 );
 
+    lv_obj_t *wifi_webserver_onoff_cont = lv_obj_create( wifi_setup_tile, NULL );
+    lv_obj_set_size(wifi_webserver_onoff_cont, LV_HOR_RES_MAX , 40);
+    lv_obj_add_style( wifi_webserver_onoff_cont, LV_OBJ_PART_MAIN, &wifi_setup_style  );
+    lv_obj_align( wifi_webserver_onoff_cont, wifi_autoon_onoff_cont, LV_ALIGN_OUT_BOTTOM_MID, 0, 0 );
+
+    wifi_webserver_onoff = lv_switch_create( wifi_setup_tile, NULL );
+    lv_obj_add_protect( wifi_webserver_onoff, LV_PROTECT_CLICK_FOCUS);
+    lv_obj_add_style( wifi_webserver_onoff, LV_SWITCH_PART_INDIC, mainbar_get_switch_style() );
+    lv_switch_off( wifi_webserver_onoff, LV_ANIM_ON );
+    lv_obj_align( wifi_webserver_onoff, wifi_webserver_onoff_cont, LV_ALIGN_IN_RIGHT_MID, -5, 0 );
+    lv_obj_set_event_cb( wifi_webserver_onoff, wifi_webserver_onoff_event_handler );
+    lv_obj_t *wifi_webserver_label = lv_label_create( wifi_webserver_onoff_cont, NULL);
+    lv_obj_add_style( wifi_webserver_label, LV_OBJ_PART_MAIN, &wifi_setup_style  );
+    lv_label_set_text( wifi_webserver_label, "enable webserver");
+    lv_obj_align( wifi_webserver_label, wifi_webserver_onoff_cont, LV_ALIGN_IN_LEFT_MID, 5, 0 );
+
     lv_obj_t *wps_btn = lv_btn_create( wifi_setup_tile, NULL);
     lv_obj_set_event_cb( wps_btn, wps_start_event_handler );
-    lv_obj_align( wps_btn, NULL, LV_ALIGN_IN_BOTTOM_MID, 0, -40);
+    lv_obj_align( wps_btn, wifi_webserver_onoff_cont, LV_ALIGN_OUT_BOTTOM_MID, 0, 10);
     lv_obj_t *wps_btn_label = lv_label_create( wps_btn, NULL );
     lv_label_set_text( wps_btn_label, "start WPS");
 
@@ -344,6 +362,11 @@ void wlan_setup_tile_setup( uint32_t wifi_setup_tile_num ) {
         lv_switch_on( wifi_autoon_onoff, LV_ANIM_OFF);
     else
         lv_switch_off( wifi_autoon_onoff, LV_ANIM_OFF);
+
+    if ( wifictl_get_webserver() )
+        lv_switch_on( wifi_webserver_onoff, LV_ANIM_OFF);
+    else
+        lv_switch_off( wifi_webserver_onoff, LV_ANIM_OFF);
 }
 
 static void wps_start_event_handler( lv_obj_t * obj, lv_event_t event ) {
@@ -372,4 +395,11 @@ static void wifi_autoon_onoff_event_handler( lv_obj_t * obj, lv_event_t event )
         case (LV_EVENT_VALUE_CHANGED):  wifictl_set_autoon( lv_switch_get_state( obj ) );
                                         break;
     }
+}
+
+static void wifi_webserver_onoff_event_handler( lv_obj_t * obj, lv_event_t event ) {
+    switch (event) {
+        case (LV_EVENT_VALUE_CHANGED):  wifictl_set_webserver( lv_switch_get_state( obj ) );
+                                        break;
+    }
 }
\ No newline at end of file
diff --git a/src/gui/screenshot.cpp b/src/gui/screenshot.cpp
index 6ded53c..07a2321 100644
--- a/src/gui/screenshot.cpp
+++ b/src/gui/screenshot.cpp
@@ -28,6 +28,10 @@ static void screenshot_disp_flush( lv_disp_drv_t *disp_drv, const lv_area_t *are
 
 void screenshot_setup( void ) {
     png = (uint16_t*)ps_malloc( LV_HOR_RES_MAX * LV_VER_RES_MAX * sizeof( lv_color_t ) );
+    if ( png == NULL ) {
+        log_e("error memory alloc");
+        while(1);
+    }
 }
 
 void screenshot_take( void ) {
diff --git a/src/hardware/bma.cpp b/src/hardware/bma.cpp
index 14ced08..5646b12 100644
--- a/src/hardware/bma.cpp
+++ b/src/hardware/bma.cpp
@@ -72,7 +72,7 @@ void bma_setup( TTGOClass *ttgo ) {
 void bma_standby( void ) {
   TTGOClass *ttgo = TTGOClass::getWatch();
 
-  log_i("standby");
+  log_i("go standby");
 
   if ( bma_get_config( BMA_STEPCOUNTER ) )
       ttgo->bma->enableStepCountInterrupt( false );
@@ -82,7 +82,7 @@ void bma_standby( void ) {
 void bma_wakeup( void ) {
   TTGOClass *ttgo = TTGOClass::getWatch();
 
-  log_i("wakeup");
+  log_i("go wakeup");
 
   if ( bma_get_config( BMA_STEPCOUNTER ) )
     ttgo->bma->enableStepCountInterrupt( true );
@@ -114,7 +114,6 @@ void IRAM_ATTR  bma_irq( void ) {
     {
         portYIELD_FROM_ISR ();
     }
-    setCpuFrequencyMhz( 240 );
 }
 
 /*
@@ -125,7 +124,9 @@ void bma_loop( TTGOClass *ttgo ) {
      * handle IRQ event
      */
     if ( xEventGroupGetBitsFromISR( bma_event_handle ) & BMA_EVENT_INT ) {
-        while( !ttgo->bma->readInterrupt() );
+      setCpuFrequencyMhz(240);
+                
+      while( !ttgo->bma->readInterrupt() );
         if ( ttgo->bma->isDoubleClick() ) {
             powermgm_set_event( POWERMGM_BMA_WAKEUP );
             xEventGroupClearBitsFromISR( bma_event_handle, BMA_EVENT_INT );
diff --git a/src/hardware/display.cpp b/src/hardware/display.cpp
index 0340205..f32cd8b 100644
--- a/src/hardware/display.cpp
+++ b/src/hardware/display.cpp
@@ -69,7 +69,7 @@ void display_loop( TTGOClass *ttgo ) {
 
 void display_standby( void ) {
   TTGOClass *ttgo = TTGOClass::getWatch();
-  log_i("standby");
+  log_i("go standby");
   ttgo->bl->adjust( 0 );
   ttgo->displaySleep();
   ttgo->closeBL();
@@ -82,7 +82,7 @@ void display_wakeup( void ) {
 
   // normal wake up from standby
   if ( powermgm_get_event( POWERMGM_PMU_BUTTON | POWERMGM_PMU_BATTERY | POWERMGM_BMA_WAKEUP ) ) {
-    log_i("wakeup");
+    log_i("go wakeup");
     ttgo->openBL();
     ttgo->displayWakeup();
     ttgo->bl->adjust( 0 );
@@ -92,7 +92,7 @@ void display_wakeup( void ) {
   }
   // silence wakeup request from standby
   else if ( powermgm_get_event( POWERMGM_SILENCE_WAKEUP_REQUEST ) ) {
-    log_i("silence wakeup");
+    log_i("go silence wakeup");
     ttgo->openBL();
     ttgo->displayWakeup();
     ttgo->bl->adjust( 0 );
diff --git a/src/hardware/pmu.cpp b/src/hardware/pmu.cpp
index 37417fa..6fd2ac5 100644
--- a/src/hardware/pmu.cpp
+++ b/src/hardware/pmu.cpp
@@ -81,11 +81,11 @@ void pmu_standby( void ) {
 
     if ( pmu_get_experimental_power_save() ) {
         ttgo->power->setDCDC3Voltage( 2700 );
-        log_i("enable 2.7V standby voltage");
+        log_i("go standby, enable 2.7V standby voltage");
     } 
     else {
         ttgo->power->setDCDC3Voltage( 3000 );
-        log_i("enable 3.0V standby voltage");
+        log_i("go standby, enable 3.0V standby voltage");
     }
     ttgo->power->setPowerOutPut(AXP202_LDO3, AXP202_OFF );
 }
@@ -95,11 +95,11 @@ void pmu_wakeup( void ) {
 
     if ( pmu_get_experimental_power_save() ) {
         ttgo->power->setDCDC3Voltage( 3000 );
-        log_i("enable 3.0V voltage");
+        log_i("go wakeup, enable 3.0V voltage");
     } 
     else {
         ttgo->power->setDCDC3Voltage( 3300 );
-        log_i("enable 3.3V voltage");
+        log_i("go wakeup, enable 3.3V voltage");
     }
 
     ttgo->power->clearTimerStatus();
@@ -174,6 +174,11 @@ void pmu_loop( TTGOClass *ttgo ) {
      */
     if ( xEventGroupGetBitsFromISR( pmu_event_handle ) & PMU_EVENT_AXP_INT ) {
         setCpuFrequencyMhz(240);
+        if ( powermgm_get_event( POWERMGM_PMU_BATTERY | POWERMGM_PMU_BUTTON | POWERMGM_STANDBY_REQUEST ) ) {
+            ttgo->power->clearIRQ();
+            xEventGroupClearBits( pmu_event_handle, PMU_EVENT_AXP_INT );            
+            return;
+        }
         
         ttgo->power->readIRQ();
         if (ttgo->power->isVbusPlugInIRQ()) {
diff --git a/src/hardware/powermgm.cpp b/src/hardware/powermgm.cpp
index 56c3fa5..ea0cf1f 100644
--- a/src/hardware/powermgm.cpp
+++ b/src/hardware/powermgm.cpp
@@ -42,6 +42,7 @@
 #include "gui/mainbar/mainbar.h"
 
 EventGroupHandle_t powermgm_status = NULL;
+portMUX_TYPE powermgmMux = portMUX_INITIALIZER_UNLOCKED;
 
 /*
  *
@@ -83,16 +84,26 @@ void powermgm_loop( TTGOClass *ttgo ) {
             display_wakeup();
 
             timesyncToSystem();
-            ttgo->startLvglTick();
-            lv_disp_trig_activity(NULL);
 
             wifictl_wakeup();
+            Serial.printf("Total heap: %d\r\n", ESP.getHeapSize());
+            Serial.printf("Free heap: %d\r\n", ESP.getFreeHeap());
+            Serial.printf("Total PSRAM: %d\r\n", ESP.getPsramSize());
+            Serial.printf("Free PSRAM: %d\r\n", ESP.getFreePsram());
+
+            ttgo->startLvglTick();
+            lv_disp_trig_activity(NULL);
         }        
         else {
+            ttgo->stopLvglTick();
+
+            Serial.printf("Total heap: %d\r\n", ESP.getHeapSize());
+            Serial.printf("Free heap: %d\r\n", ESP.getFreeHeap());
+            Serial.printf("Total PSRAM: %d\r\n", ESP.getPsramSize());
+            Serial.printf("Free PSRAM: %d\r\n", ESP.getFreePsram());
             display_standby();
             mainbar_jump_to_maintile( LV_ANIM_OFF );
 
-            ttgo->stopLvglTick();
             timesyncToRTC();
 
             bma_standby();
@@ -126,19 +137,26 @@ void powermgm_loop( TTGOClass *ttgo ) {
  *
  */
 void powermgm_set_event( EventBits_t bits ) {
+    portENTER_CRITICAL_ISR(&powermgmMux);
     xEventGroupSetBits( powermgm_status, bits );
+    portEXIT_CRITICAL_ISR(&powermgmMux);
 }
 
 /*
  *
  */
 void powermgm_clear_event( EventBits_t bits ) {
+    portENTER_CRITICAL_ISR(&powermgmMux);
     xEventGroupClearBits( powermgm_status, bits );
+    portEXIT_CRITICAL_ISR(&powermgmMux);
 }
 
 /*
  *
  */
 EventBits_t powermgm_get_event( EventBits_t bits ) {
-    return( xEventGroupGetBits( powermgm_status ) & bits );
+    portENTER_CRITICAL_ISR(&powermgmMux);
+    EventBits_t temp = xEventGroupGetBits( powermgm_status ) & bits;
+    portEXIT_CRITICAL_ISR(&powermgmMux);
+    return( temp );
 }
diff --git a/src/hardware/timesync.cpp b/src/hardware/timesync.cpp
index 9698b0e..f6b6354 100644
--- a/src/hardware/timesync.cpp
+++ b/src/hardware/timesync.cpp
@@ -23,6 +23,7 @@
 #include <WiFi.h>
 #include "config.h"
 #include "timesync.h"
+#include "powermgm.h"
 
 EventGroupHandle_t time_event_handle = NULL;
 TaskHandle_t _timesync_Task;
diff --git a/src/hardware/wifictl.cpp b/src/hardware/wifictl.cpp
index d5dcd3d..eb79b3a 100644
--- a/src/hardware/wifictl.cpp
+++ b/src/hardware/wifictl.cpp
@@ -124,7 +124,9 @@ void wifictl_setup( void ) {
         // label.concat('\n');
         // label.concat(WiFi.localIPv6().toString());
         statusbar_wifi_set_state( true, label.c_str() );
-        asyncwebserver_setup();
+        if ( wifictl_config.webserver ) {
+          asyncwebserver_start();
+        }
         lv_obj_invalidate( lv_scr_act() );
     }, WiFiEvent_t::SYSTEM_EVENT_STA_GOT_IP );
 
@@ -144,10 +146,11 @@ void wifictl_setup( void ) {
     }, WiFiEvent_t::SYSTEM_EVENT_WIFI_READY );
 
     WiFi.onEvent([](WiFiEvent_t event, WiFiEventInfo_t info) {
-        powermgm_clear_event( POWERMGM_WIFI_ACTIVE | POWERMGM_WIFI_CONNECTED | POWERMGM_WIFI_OFF_REQUEST | POWERMGM_WIFI_ON_REQUEST | POWERMGM_WIFI_SCAN | POWERMGM_WIFI_WPS_REQUEST );
         statusbar_hide_icon( STATUSBAR_WIFI );
         statusbar_wifi_set_state( false, "" );
         lv_obj_invalidate( lv_scr_act() );
+        asyncwebserver_end();
+        powermgm_clear_event( POWERMGM_WIFI_ACTIVE | POWERMGM_WIFI_CONNECTED | POWERMGM_WIFI_OFF_REQUEST | POWERMGM_WIFI_ON_REQUEST | POWERMGM_WIFI_SCAN | POWERMGM_WIFI_WPS_REQUEST );
     }, WiFiEvent_t::SYSTEM_EVENT_STA_STOP );
 
     WiFi.onEvent([](WiFiEvent_t event, WiFiEventInfo_t info) {
@@ -222,6 +225,15 @@ void wifictl_set_autoon( bool autoon ) {
   wifictl_config.autoon = autoon;
   wifictl_save_config();
 }
+
+bool wifictl_get_webserver( void ) {
+  return( wifictl_config.webserver );
+}
+
+void wifictl_set_webserver( bool webserver ) {
+  wifictl_config.webserver = webserver;
+  wifictl_save_config();
+}
 /*
  *
  */
@@ -329,6 +341,7 @@ void wifictl_on( void ) {
   if ( wifi_init == false )
     return;
 
+  log_i("request wifictl on");
   if ( powermgm_get_event( POWERMGM_WIFI_OFF_REQUEST ) || powermgm_get_event( POWERMGM_WIFI_ON_REQUEST ) ) {
     return;
   }
@@ -345,6 +358,7 @@ void wifictl_off( void ) {
   if ( wifi_init == false )
     return;
   
+  log_i("request wifictl off");
   if ( powermgm_get_event( POWERMGM_WIFI_OFF_REQUEST ) || powermgm_get_event( POWERMGM_WIFI_ON_REQUEST )) {
     return;
   }
@@ -355,15 +369,19 @@ void wifictl_off( void ) {
 }
 
 void wifictl_standby( void ) {
-  log_i("standby");
-  if ( powermgm_get_event( POWERMGM_WIFI_ACTIVE ) ) wifictl_off();
-  while( powermgm_get_event( POWERMGM_WIFI_ACTIVE | POWERMGM_WIFI_CONNECTED | POWERMGM_WIFI_OFF_REQUEST | POWERMGM_WIFI_ON_REQUEST | POWERMGM_WIFI_SCAN | POWERMGM_WIFI_WPS_REQUEST ) ) { yield(); }
+  log_i("request wifictl standby");
+  wifictl_off();
+  while( powermgm_get_event( POWERMGM_WIFI_ACTIVE | POWERMGM_WIFI_CONNECTED | POWERMGM_WIFI_OFF_REQUEST | POWERMGM_WIFI_ON_REQUEST | POWERMGM_WIFI_SCAN | POWERMGM_WIFI_WPS_REQUEST ) ) { 
+    yield();
+  }
+  log_i("request wifictl standby done");
 }
 
 void wifictl_wakeup( void ) {
   if ( wifictl_config.autoon ) {
-    log_i("wakeup");
+    log_i("request wifictl wakeup");
     wifictl_on();
+    log_i("request wifictl wakeup done");
   }
 }
 
@@ -411,6 +429,7 @@ void wifictl_Task( void * pvParameters ) {
       lv_obj_invalidate( lv_scr_act() );
       WiFi.mode( WIFI_STA );
       powermgm_clear_event( POWERMGM_WIFI_OFF_REQUEST | POWERMGM_WIFI_ACTIVE | POWERMGM_WIFI_CONNECTED | POWERMGM_WIFI_SCAN | POWERMGM_WIFI_ON_REQUEST );
+      log_i("request wifictl on done");
     }
     else if ( powermgm_get_event( POWERMGM_WIFI_OFF_REQUEST ) ) {
       statusbar_wifi_set_state( false, "" );
@@ -418,6 +437,7 @@ void wifictl_Task( void * pvParameters ) {
       WiFi.mode( WIFI_OFF );
       esp_wifi_stop();
       powermgm_clear_event( POWERMGM_WIFI_OFF_REQUEST | POWERMGM_WIFI_ACTIVE | POWERMGM_WIFI_CONNECTED | POWERMGM_WIFI_SCAN | POWERMGM_WIFI_ON_REQUEST );
+      log_i("request wifictl off done");
     }
     vTaskSuspend( _wifictl_Task );
   }
diff --git a/src/hardware/wifictl.h b/src/hardware/wifictl.h
index c0cd58a..d1fe7f4 100644
--- a/src/hardware/wifictl.h
+++ b/src/hardware/wifictl.h
@@ -40,6 +40,7 @@
 
     typedef struct {
         bool autoon = true;
+        bool webserver = true;
     } wifictl_config_t;
 
     /*
@@ -82,5 +83,7 @@
     bool wifictl_get_autoon( void );
     void wifictl_set_autoon( bool autoon );
     void wifictl_start_wps( void );
+    bool wifictl_get_webserver( void );
+    void wifictl_set_webserver( bool webserver );
 
 #endif // _WIFICTL_H
\ No newline at end of file
diff --git a/src/my-ttgo-watch.ino b/src/my-ttgo-watch.ino
index 7e9e850..73c474c 100644
--- a/src/my-ttgo-watch.ino
+++ b/src/my-ttgo-watch.ino
@@ -91,6 +91,7 @@ void setup()
 
 void loop()
 {
+    delay(10);
     gui_loop( ttgo );
     powermgm_loop( ttgo );
 }
diff --git a/src/webserver/webserver.cpp b/src/webserver/webserver.cpp
index a32f80b..5d53501 100644
--- a/src/webserver/webserver.cpp
+++ b/src/webserver/webserver.cpp
@@ -77,7 +77,7 @@ void handleUpdate( AsyncWebServerRequest *request, const String& filename, size_
 /*
  *
  */
-void asyncwebserver_setup(void){
+void asyncwebserver_start(void){
 
   asyncserver.on("/info", HTTP_GET, [](AsyncWebServerRequest *request) {
     String message("Firmwarestand: " __DATE__ " " __TIME__ "\nGCC-Version: " __VERSION__ "\n");
@@ -217,4 +217,12 @@ void asyncwebserver_setup(void){
   SSDP.begin();
 
   asyncserver.begin();
+
+  log_i("enable webserver and ssdp");
+}
+
+void asyncwebserver_end(void) {
+  SSDP.end();
+  asyncserver.end();
+  log_i("disable webserver and ssdp");
 }
\ No newline at end of file
diff --git a/src/webserver/webserver.h b/src/webserver/webserver.h
index 4e0c855..198dba0 100644
--- a/src/webserver/webserver.h
+++ b/src/webserver/webserver.h
@@ -33,6 +33,7 @@
     /*
      *  @brief setup builtin webserver, call after first wifi-connection. otherwise esp32 will crash
      */
-    void asyncwebserver_setup(void);
+    void asyncwebserver_start(void);
+    void asyncwebserver_end(void);
 
 #endif // _ASYNCWEBSERVER_H
\ No newline at end of file
diff --git a/ttgo-t-watch2020_v1.ino.bin b/ttgo-t-watch2020_v1.ino.bin
index d9b71f1..cae6940 100644
Binary files a/ttgo-t-watch2020_v1.ino.bin and b/ttgo-t-watch2020_v1.ino.bin differ
diff --git a/ttgo-t-watch2020_v1.version.json b/ttgo-t-watch2020_v1.version.json
index df38553..c5d7709 100644
--- a/ttgo-t-watch2020_v1.version.json
+++ b/ttgo-t-watch2020_v1.version.json
@@ -1 +1 @@
-{"version":"2020080702","host":"http://www.neo-guerillaz.de","file":"ttgo-t-watch2020_v1.ino.bin"}
+{"version":"2020081001","host":"http://www.neo-guerillaz.de","file":"ttgo-t-watch2020_v1.ino.bin"}