Refresh rework

src/displayapp/DisplayApp.cpp

@@ -239,7 +239,7 @@ void DisplayApp::Refresh() {
 }
 
 void DisplayApp::RunningState() {
-  if (!currentScreen->Refresh()) {
+  if (!currentScreen->IsRunning()) {
     LoadApp(returnToApp, returnDirection);
   }
   lv_task_handler();

src/displayapp/screens/ApplicationList.cpp

@@ -34,12 +34,6 @@ ApplicationList::~ApplicationList() {
   lv_obj_clean(lv_scr_act());
 }
 
-bool ApplicationList::Refresh() {
-  if (running)
-    running = screens.Refresh();
-  return running;
-}
-
 bool ApplicationList::OnTouchEvent(Pinetime::Applications::TouchEvents event) {
   return screens.OnTouchEvent(event);
 }

src/displayapp/screens/ApplicationList.h

@@ -18,7 +18,6 @@ namespace Pinetime {
                                  Pinetime::Controllers::Battery& batteryController,
                                  Controllers::DateTime& dateTimeController);
         ~ApplicationList() override;
-        bool Refresh() override;
         bool OnTouchEvent(TouchEvents event) override;
 
       private:
@@ -33,4 +32,4 @@ namespace Pinetime {
       };
     }
   }
-}
+}

src/displayapp/screens/BatteryInfo.cpp

@@ -4,11 +4,6 @@
 
 using namespace Pinetime::Applications::Screens;
 
-static void lv_update_task(struct _lv_task_t* task) {
-  auto user_data = static_cast<BatteryInfo*>(task->user_data);
-  user_data->UpdateScreen();
-}
-
 BatteryInfo::BatteryInfo(Pinetime::Applications::DisplayApp* app, Pinetime::Controllers::Battery& batteryController)
   : Screen(app), batteryController {batteryController} {
 
@@ -49,16 +44,16 @@ BatteryInfo::BatteryInfo(Pinetime::Applications::DisplayApp* app, Pinetime::Cont
   lv_obj_set_pos(backgroundLabel, 0, 0);
   lv_label_set_text_static(backgroundLabel, "");
 
-  taskUpdate = lv_task_create(lv_update_task, 5000, LV_TASK_PRIO_LOW, this);
-  UpdateScreen();
+  taskRefresh = lv_task_create(RefreshTaskCallback, 5000, LV_TASK_PRIO_MID, this);
+  Refresh();
 }
 
 BatteryInfo::~BatteryInfo() {
-  lv_task_del(taskUpdate);
+  lv_task_del(taskRefresh);
   lv_obj_clean(lv_scr_act());
 }
 
-void BatteryInfo::UpdateScreen() {
+void BatteryInfo::Refresh() {
 
   batteryController.Update();
 
@@ -85,7 +80,3 @@ void BatteryInfo::UpdateScreen() {
   lv_label_set_text_fmt(voltage, "%1i.%02i volts", batteryVoltage / 1000, batteryVoltage % 1000 / 10);
   lv_bar_set_value(charging_bar, batteryPercent, LV_ANIM_ON);
 }
-
-bool BatteryInfo::Refresh() {
-  return running;
-}

src/displayapp/screens/BatteryInfo.h

@@ -19,9 +19,7 @@ namespace Pinetime {
         BatteryInfo(DisplayApp* app, Pinetime::Controllers::Battery& batteryController);
         ~BatteryInfo() override;
 
-        bool Refresh() override;
-
-        void UpdateScreen();
+        void Refresh() override;
 
       private:
         Pinetime::Controllers::Battery& batteryController;
@@ -31,7 +29,7 @@ namespace Pinetime {
         lv_obj_t* charging_bar;
         lv_obj_t* status;
 
-        lv_task_t* taskUpdate;
+        lv_task_t* taskRefresh;
 
         uint8_t batteryPercent = 0;
         uint16_t batteryVoltage = 0;

src/displayapp/screens/Brightness.cpp

@@ -30,10 +30,6 @@ Brightness::~Brightness() {
   lv_obj_clean(lv_scr_act());
 }
 
-bool Brightness::Refresh() {
-  return running;
-}
-
 const char* Brightness::LevelToString(Pinetime::Controllers::BrightnessController::Levels level) {
   switch (level) {
     case Pinetime::Controllers::BrightnessController::Levels::Off:

src/displayapp/screens/Brightness.h

@@ -12,7 +12,6 @@ namespace Pinetime {
       public:
         Brightness(DisplayApp* app, Controllers::BrightnessController& brightness);
         ~Brightness() override;
-        bool Refresh() override;
 
         bool OnTouchEvent(TouchEvents event) override;
 
@@ -31,4 +30,4 @@ namespace Pinetime {
       };
     }
   }
-}
+}

src/displayapp/screens/Clock.cpp

@@ -55,11 +55,6 @@ Clock::~Clock() {
   lv_obj_clean(lv_scr_act());
 }
 
-bool Clock::Refresh() {
-  screen->Refresh();
-  return running;
-}
-
 bool Clock::OnTouchEvent(Pinetime::Applications::TouchEvents event) {
   return screen->OnTouchEvent(event);
 }
@@ -101,4 +96,4 @@ std::unique_ptr<Screen> Clock::WatchFaceCustomScreen() {
   return std::make_unique<Screens::WatchFaceCustom>(app, dateTimeController, batteryController, bleController, notificatioManager,
 settingsController);
 }
-*/
+*/

src/displayapp/screens/Clock.h

@@ -34,8 +34,6 @@ namespace Pinetime {
               Controllers::MotionController& motionController);
         ~Clock() override;
 
-        bool Refresh() override;
-
         bool OnTouchEvent(TouchEvents event) override;
 
       private:

src/displayapp/screens/FirmwareUpdate.cpp

@@ -30,36 +30,40 @@ FirmwareUpdate::FirmwareUpdate(Pinetime::Applications::DisplayApp* app, Pinetime
   lv_label_set_text(percentLabel, "");
   lv_obj_set_auto_realign(percentLabel, true);
   lv_obj_align(percentLabel, bar1, LV_ALIGN_OUT_TOP_MID, 0, 60);
+
+  taskRefresh = lv_task_create(RefreshTaskCallback, LV_DISP_DEF_REFR_PERIOD, LV_TASK_PRIO_MID, this);
 }
 
 FirmwareUpdate::~FirmwareUpdate() {
+  lv_task_del(taskRefresh);
   lv_obj_clean(lv_scr_act());
 }
 
-bool FirmwareUpdate::Refresh() {
+void FirmwareUpdate::Refresh() {
   switch (bleController.State()) {
     default:
     case Pinetime::Controllers::Ble::FirmwareUpdateStates::Idle:
     case Pinetime::Controllers::Ble::FirmwareUpdateStates::Running:
       if (state != States::Running)
         state = States::Running;
-      return DisplayProgression();
+      DisplayProgression();
+      return;
     case Pinetime::Controllers::Ble::FirmwareUpdateStates::Validated:
       if (state != States::Validated) {
         UpdateValidated();
         state = States::Validated;
       }
-      return running;
+      return;
     case Pinetime::Controllers::Ble::FirmwareUpdateStates::Error:
       if (state != States::Error) {
         UpdateError();
         state = States::Error;
       }
-      return running;
+      return;
   }
 }
 
-bool FirmwareUpdate::DisplayProgression() const {
+void FirmwareUpdate::DisplayProgression() const {
   float current = bleController.FirmwareUpdateCurrentBytes() / 1024.0f;
   float total = bleController.FirmwareUpdateTotalBytes() / 1024.0f;
   int16_t pc = (current / total) * 100.0f;
@@ -67,7 +71,6 @@ bool FirmwareUpdate::DisplayProgression() const {
   lv_label_set_text(percentLabel, percentStr);
 
   lv_bar_set_value(bar1, pc, LV_ANIM_OFF);
-  return running;
 }
 
 void FirmwareUpdate::UpdateValidated() {

src/displayapp/screens/FirmwareUpdate.h

@@ -15,7 +15,7 @@ namespace Pinetime {
         FirmwareUpdate(DisplayApp* app, Pinetime::Controllers::Ble& bleController);
         ~FirmwareUpdate() override;
 
-        bool Refresh() override;
+        void Refresh() override;
 
       private:
         enum class States { Idle, Running, Validated, Error };
@@ -27,11 +27,13 @@ namespace Pinetime {
 
         States state;
 
-        bool DisplayProgression() const;
+        void DisplayProgression() const;
 
         void UpdateValidated();
 
         void UpdateError();
+
+        lv_task_t* taskRefresh;
       };
     }
   }

src/displayapp/screens/FirmwareValidation.cpp

@@ -61,10 +61,6 @@ FirmwareValidation::~FirmwareValidation() {
   lv_obj_clean(lv_scr_act());
 }
 
-bool FirmwareValidation::Refresh() {
-  return running;
-}
-
 void FirmwareValidation::OnButtonEvent(lv_obj_t* object, lv_event_t event) {
   if (object == buttonValidate && event == LV_EVENT_PRESSED) {
     validator.Validate();

src/displayapp/screens/FirmwareValidation.h

@@ -16,8 +16,6 @@ namespace Pinetime {
         FirmwareValidation(DisplayApp* app, Pinetime::Controllers::FirmwareValidator& validator);
         ~FirmwareValidation() override;
 
-        bool Refresh() override;
-
         void OnButtonEvent(lv_obj_t* object, lv_event_t event);
 
       private:

src/displayapp/screens/FlashLight.cpp

@@ -65,10 +65,6 @@ void FlashLight::OnClickEvent(lv_obj_t* obj, lv_event_t event) {
   }
 }
 
-bool FlashLight::Refresh() {
-  return running;
-}
-
 bool FlashLight::OnTouchEvent(Pinetime::Applications::TouchEvents event) {
   return true;
 }

src/displayapp/screens/FlashLight.h

@@ -16,8 +16,6 @@ namespace Pinetime {
         FlashLight(DisplayApp* app, System::SystemTask& systemTask, Controllers::BrightnessController& brightness);
         ~FlashLight() override;
 
-        bool Refresh() override;
-
         bool OnTouchEvent(Pinetime::Applications::TouchEvents event) override;
         void OnClickEvent(lv_obj_t* obj, lv_event_t event);
 

src/displayapp/screens/HeartRate.cpp

@@ -64,14 +64,17 @@ HeartRate::HeartRate(Pinetime::Applications::DisplayApp* app,
   UpdateStartStopButton(isHrRunning);
   if (isHrRunning)
     systemTask.PushMessage(Pinetime::System::Messages::DisableSleeping);
+
+  taskRefresh = lv_task_create(RefreshTaskCallback, 100, LV_TASK_PRIO_MID, this);
 }
 
 HeartRate::~HeartRate() {
+  lv_task_del(taskRefresh);
   lv_obj_clean(lv_scr_act());
   systemTask.PushMessage(Pinetime::System::Messages::EnableSleeping);
 }
 
-bool HeartRate::Refresh() {
+void HeartRate::Refresh() {
 
   auto state = heartRateController.State();
   switch (state) {
@@ -86,8 +89,6 @@ bool HeartRate::Refresh() {
 
   lv_label_set_text(label_status, ToString(state));
   lv_obj_align(label_status, label_hr, LV_ALIGN_OUT_BOTTOM_MID, 0, 10);
-
-  return running;
 }
 
 void HeartRate::OnStartStopEvent(lv_event_t event) {

src/displayapp/screens/HeartRate.h

@@ -20,7 +20,7 @@ namespace Pinetime {
         HeartRate(DisplayApp* app, Controllers::HeartRateController& HeartRateController, System::SystemTask& systemTask);
         ~HeartRate() override;
 
-        bool Refresh() override;
+        void Refresh() override;
 
         void OnStartStopEvent(lv_event_t event);
 
@@ -33,6 +33,8 @@ namespace Pinetime {
         lv_obj_t* label_status;
         lv_obj_t* btn_startStop;
         lv_obj_t* label_startStop;
+
+        lv_task_t* taskRefresh;
       };
     }
   }

src/displayapp/screens/InfiniPaint.cpp

@@ -15,10 +15,6 @@ InfiniPaint::~InfiniPaint() {
   lv_obj_clean(lv_scr_act());
 }
 
-bool InfiniPaint::Refresh() {
-  return running;
-}
-
 bool InfiniPaint::OnTouchEvent(Pinetime::Applications::TouchEvents event) {
   switch (event) {
     case Pinetime::Applications::TouchEvents::LongTap:

src/displayapp/screens/InfiniPaint.h

@@ -17,8 +17,6 @@ namespace Pinetime {
 
         ~InfiniPaint() override;
 
-        bool Refresh() override;
-
         bool OnTouchEvent(TouchEvents event) override;
 
         bool OnTouchEvent(uint16_t x, uint16_t y) override;

src/displayapp/screens/Label.cpp

@@ -36,7 +36,3 @@ Label::Label(uint8_t screenID, uint8_t numScreens, Pinetime::Applications::Displ
 Label::~Label() {
   lv_obj_clean(lv_scr_act());
 }
-
-bool Label::Refresh() {
-  return running;
-}

src/displayapp/screens/Label.h

@@ -12,8 +12,6 @@ namespace Pinetime {
         Label(uint8_t screenID, uint8_t numScreens, DisplayApp* app, lv_obj_t* labelText);
         ~Label() override;
 
-        bool Refresh() override;
-
       private:
         bool running = true;
 
@@ -25,4 +23,4 @@ namespace Pinetime {
       };
     }
   }
-}
+}

src/displayapp/screens/List.cpp

@@ -102,11 +102,6 @@ List::~List() {
   lv_obj_clean(lv_scr_act());
 }
 
-bool List::Refresh() {
-
-  return running;
-}
-
 void List::OnButtonEvent(lv_obj_t* object, lv_event_t event) {
   if (event == LV_EVENT_RELEASED) {
     for (int i = 0; i < MAXLISTITEMS; i++) {

src/displayapp/screens/List.h

@@ -27,8 +27,6 @@ namespace Pinetime {
                       std::array<Applications, MAXLISTITEMS>& applications);
         ~List() override;
 
-        bool Refresh() override;
-
         void OnButtonEvent(lv_obj_t* object, lv_event_t event);
 
       private:

src/displayapp/screens/Meter.cpp

@@ -20,17 +20,17 @@ Meter::Meter(Pinetime::Applications::DisplayApp* app) : Screen(app) {
 
   lv_obj_set_size(lmeter, 200, 200);
   lv_obj_align(lmeter, nullptr, LV_ALIGN_CENTER, 0, 0);
+
+  taskRefresh = lv_task_create(RefreshTaskCallback, LV_DISP_DEF_REFR_PERIOD, LV_TASK_PRIO_MID, this);
 }
 
 Meter::~Meter() {
-
+  lv_task_del(taskRefresh);
   lv_obj_clean(lv_scr_act());
 }
 
-bool Meter::Refresh() {
+void Meter::Refresh() {
   lv_linemeter_set_value(lmeter, value++); /*Set the current value*/
   if (value >= 60)
     value = 0;
-
-  return running;
 }

src/displayapp/screens/Meter.h

@@ -14,13 +14,15 @@ namespace Pinetime {
         Meter(DisplayApp* app);
         ~Meter() override;
 
-        bool Refresh() override;
+        void Refresh() override;
 
       private:
         lv_style_t style_lmeter;
         lv_obj_t* lmeter;
 
         uint32_t value = 0;
+
+        lv_task_t* taskRefresh;
       };
     }
   }

src/displayapp/screens/Metronome.cpp

@@ -85,9 +85,12 @@ Metronome::Metronome(DisplayApp* app, Controllers::MotorController& motorControl
   lv_label_set_text(playPauseLabel, Symbols::play);
 
   app->SetTouchMode(DisplayApp::TouchModes::Polling);
+
+  taskRefresh = lv_task_create(RefreshTaskCallback, LV_DISP_DEF_REFR_PERIOD, LV_TASK_PRIO_MID, this);
 }
 
 Metronome::~Metronome() {
+  lv_task_del(taskRefresh);
   app->SetTouchMode(DisplayApp::TouchModes::Gestures);
   systemTask.PushMessage(System::Messages::EnableSleeping);
   lv_obj_clean(lv_scr_act());
@@ -97,7 +100,7 @@ bool Metronome::OnTouchEvent(Pinetime::Applications::TouchEvents event) {
   return true;
 }
 
-bool Metronome::Refresh() {
+void Metronome::Refresh() {
   switch (currentState) {
     case States::Stopped: {
       break;
@@ -117,7 +120,6 @@ bool Metronome::Refresh() {
       break;
     }
   }
-  return running;
 }
 
 void Metronome::OnEvent(lv_obj_t* obj, lv_event_t event) {

src/displayapp/screens/Metronome.h

@@ -11,7 +11,7 @@ namespace Pinetime::Applications::Screens {
   public:
     Metronome(DisplayApp* app, Controllers::MotorController& motorController, System::SystemTask& systemTask);
     ~Metronome() override;
-    bool Refresh() override;
+    void Refresh() override;
     bool OnTouchEvent(TouchEvents event) override;
     void OnEvent(lv_obj_t* obj, lv_event_t event);
     enum class States { Running, Stopped };
@@ -30,5 +30,7 @@ namespace Pinetime::Applications::Screens {
     lv_obj_t *bpmArc, *bpmTap, *bpmValue, *bpmLegend;
     lv_obj_t *bpbDropdown, *bpbLegend;
     lv_obj_t *playPause, *playPauseLabel;
+
+    lv_task_t* taskRefresh;
   };
 }

src/displayapp/screens/Motion.cpp

@@ -32,18 +32,20 @@ Motion::Motion(Pinetime::Applications::DisplayApp* app, Controllers::MotionContr
   lv_label_set_align(label, LV_LABEL_ALIGN_CENTER);
   lv_obj_align(label, NULL, LV_ALIGN_IN_TOP_MID, 0, 10);
   lv_label_set_recolor(label, true);
-  
+
   labelStep = lv_label_create(lv_scr_act(), NULL);
   lv_obj_align(labelStep, chart, LV_ALIGN_IN_BOTTOM_LEFT, 0, 0);
   lv_label_set_text(labelStep, "Steps ---");
 
+  taskRefresh = lv_task_create(RefreshTaskCallback, LV_DISP_DEF_REFR_PERIOD, LV_TASK_PRIO_MID, this);
 }
 
 Motion::~Motion() {
+  lv_task_del(taskRefresh);
   lv_obj_clean(lv_scr_act());
 }
 
-bool Motion::Refresh() {
+void Motion::Refresh() {
   lv_chart_set_next(chart, ser1, motionController.X());
   lv_chart_set_next(chart, ser2, motionController.Y());
   lv_chart_set_next(chart, ser3, motionController.Z());
@@ -52,8 +54,6 @@ bool Motion::Refresh() {
 
   lv_label_set_text_fmt(label, "X #FF0000 %d# Y #008000 %d# Z #FFFF00 %d#", motionController.X() / 0x10, motionController.Y() / 0x10, motionController.Z() / 0x10);
   lv_obj_align(label, NULL, LV_ALIGN_IN_TOP_MID, 0, 10);
-
-  return running;
 }
 
 bool Motion::OnButtonPushed() {

src/displayapp/screens/Motion.h

@@ -17,7 +17,7 @@ namespace Pinetime {
         Motion(DisplayApp* app, Controllers::MotionController& motionController);
         ~Motion() override;
 
-        bool Refresh() override;
+        void Refresh() override;
         bool OnButtonPushed() override;
 
       private:
@@ -32,7 +32,9 @@ namespace Pinetime {
         static constexpr uint8_t nbStepsBufferSize = 9;
         char nbStepsBuffer[nbStepsBufferSize + 1];
         bool running = true;
+
+        lv_task_t* taskRefresh;
       };
     }
   }
-}
+}

src/displayapp/screens/Music.cpp

@@ -146,13 +146,16 @@ Music::Music(Pinetime::Applications::DisplayApp* app, Pinetime::Controllers::Mus
   frameB = false;
 
   musicService.event(Controllers::MusicService::EVENT_MUSIC_OPEN);
+
+  taskRefresh = lv_task_create(RefreshTaskCallback, 5000, LV_TASK_PRIO_MID, this);
 }
 
 Music::~Music() {
+  lv_task_del(taskRefresh);
   lv_obj_clean(lv_scr_act());
 }
 
-bool Music::Refresh() {
+void Music::Refresh() {
   if (artist != musicService.getArtist()) {
     artist = musicService.getArtist();
     currentLength = 0;
@@ -216,8 +219,6 @@ bool Music::Refresh() {
   } else {
     lv_label_set_text(txtPlayPause, Symbols::play);
   }
-
-  return running;
 }
 
 void Music::UpdateLength() {
@@ -303,4 +304,4 @@ bool Music::OnTouchEvent(Pinetime::Applications::TouchEvents event) {
       return true;
     }
   }
-}
+}

src/displayapp/screens/Music.h

@@ -35,7 +35,7 @@ namespace Pinetime {
 
         ~Music() override;
 
-        bool Refresh() override;
+        void Refresh() override;
 
         void OnObjectEvent(lv_obj_t* obj, lv_event_t event);
 
@@ -78,6 +78,8 @@ namespace Pinetime {
 
         bool playing;
 
+        lv_task_t* taskRefresh;
+
         /** Watchapp */
       };
     }

src/displayapp/screens/Navigation.cpp

@@ -161,13 +161,16 @@ Navigation::Navigation(Pinetime::Applications::DisplayApp* app, Pinetime::Contro
   lv_bar_set_anim_time(barProgress, 500);
   lv_bar_set_range(barProgress, 0, 100);
   lv_bar_set_value(barProgress, 0, LV_ANIM_OFF);
+
+  taskRefresh = lv_task_create(RefreshTaskCallback, LV_DISP_DEF_REFR_PERIOD, LV_TASK_PRIO_MID, this);
 }
 
 Navigation::~Navigation() {
+  lv_task_del(taskRefresh);
   lv_obj_clean(lv_scr_act());
 }
 
-bool Navigation::Refresh() {
+void Navigation::Refresh() {
   if (flag != navService.getFlag()) {
     flag = navService.getFlag();
     lv_label_set_text(imgFlag, iconForName(flag));
@@ -192,8 +195,4 @@ bool Navigation::Refresh() {
       lv_obj_set_style_local_bg_color(barProgress, LV_BAR_PART_INDIC, LV_STATE_DEFAULT, LV_COLOR_ORANGE);
     }
   }
-
-  return running;
 }
-
-

src/displayapp/screens/Navigation.h

@@ -35,7 +35,7 @@ namespace Pinetime {
         Navigation(DisplayApp* app, Pinetime::Controllers::NavigationService& nav);
         ~Navigation() override;
 
-        bool Refresh() override;
+        void Refresh() override;
 
       private:
         lv_obj_t* imgFlag;
@@ -49,6 +49,8 @@ namespace Pinetime {
         std::string narrative;
         std::string manDist;
         int progress;
+
+        lv_task_t* taskRefresh;
       };
     }
   }

src/displayapp/screens/Notifications.cpp

@@ -47,13 +47,16 @@ Notifications::Notifications(DisplayApp* app,
     timeoutTickCountStart = xTaskGetTickCount();
     timeoutTickCountEnd = timeoutTickCountStart + (5 * 1024);
   }
+
+  taskRefresh = lv_task_create(RefreshTaskCallback, LV_DISP_DEF_REFR_PERIOD, LV_TASK_PRIO_MID, this);
 }
 
 Notifications::~Notifications() {
+  lv_task_del(taskRefresh);
   lv_obj_clean(lv_scr_act());
 }
 
-bool Notifications::Refresh() {
+void Notifications::Refresh() {
   if (mode == Modes::Preview) {
     auto tick = xTaskGetTickCount();
     int32_t pos = 240 - ((tick - timeoutTickCountStart) / ((timeoutTickCountEnd - timeoutTickCountStart) / 240));
@@ -63,8 +66,6 @@ bool Notifications::Refresh() {
     timeoutLinePoints[1].x = pos;
     lv_line_set_points(timeoutLine, timeoutLinePoints, 2);
   }
-
-  return running;
 }
 
 bool Notifications::OnTouchEvent(Pinetime::Applications::TouchEvents event) {

src/displayapp/screens/Notifications.h

@@ -22,7 +22,7 @@ namespace Pinetime {
                                Modes mode);
         ~Notifications() override;
 
-        bool Refresh() override;
+        void Refresh() override;
         bool OnTouchEvent(Pinetime::Applications::TouchEvents event) override;
 
         class NotificationItem {
@@ -35,9 +35,6 @@ namespace Pinetime {
                            Modes mode,
                            Pinetime::Controllers::AlertNotificationService& alertNotificationService);
           ~NotificationItem();
-          bool Refresh() {
-            return false;
-          }
           void OnAcceptIncomingCall(lv_event_t event);
           void OnMuteIncomingCall(lv_event_t event);
           void OnRejectIncomingCall(lv_event_t event);
@@ -78,6 +75,8 @@ namespace Pinetime {
         lv_obj_t* timeoutLine;
         uint32_t timeoutTickCountStart;
         uint32_t timeoutTickCountEnd;
+
+        lv_task_t* taskRefresh;
       };
     }
   }

src/displayapp/screens/Paddle.cpp

@@ -29,15 +29,18 @@ Paddle::Paddle(Pinetime::Applications::DisplayApp* app, Pinetime::Components::Li
   lv_obj_set_style_local_bg_color(ball, LV_BTN_PART_MAIN, LV_STATE_DEFAULT, LV_COLOR_WHITE);
   lv_obj_set_style_local_radius(ball, LV_BTN_PART_MAIN, LV_STATE_DEFAULT, LV_RADIUS_CIRCLE);
   lv_obj_set_size(ball, ballSize, ballSize);
+
+  taskRefresh = lv_task_create(RefreshTaskCallback, 20, LV_TASK_PRIO_MID, this);
 }
 
 Paddle::~Paddle() {
+  lv_task_del(taskRefresh);
   // Reset the touchmode
   app->SetTouchMode(DisplayApp::TouchModes::Gestures);
   lv_obj_clean(lv_scr_act());
 }
 
-bool Paddle::Refresh() {
+void Paddle::Refresh() {
   ballX += dx;
   ballY += dy;
 
@@ -69,7 +72,6 @@ bool Paddle::Refresh() {
     }
   }
   lv_label_set_text_fmt(points, "%04d", score);
-  return running;
 }
 
 bool Paddle::OnTouchEvent(Pinetime::Applications::TouchEvents event) {

src/displayapp/screens/Paddle.h

@@ -16,7 +16,7 @@ namespace Pinetime {
         Paddle(DisplayApp* app, Pinetime::Components::LittleVgl& lvgl);
         ~Paddle() override;
 
-        bool Refresh() override;
+        void Refresh() override;
 
         bool OnTouchEvent(TouchEvents event) override;
         bool OnTouchEvent(uint16_t x, uint16_t y) override;
@@ -40,6 +40,8 @@ namespace Pinetime {
         lv_obj_t* paddle;
         lv_obj_t* ball;
         lv_obj_t* background;
+
+        lv_task_t* taskRefresh;
       };
     }
   }

src/displayapp/screens/PineTimeStyle.cpp

@@ -200,13 +200,17 @@ PineTimeStyle::PineTimeStyle(DisplayApp* app,
   lv_obj_set_size(backgroundLabel, 240, 240);
   lv_obj_set_pos(backgroundLabel, 0, 0);
   lv_label_set_text(backgroundLabel, "");
+
+  taskRefresh = lv_task_create(RefreshTaskCallback, LV_DISP_DEF_REFR_PERIOD, LV_TASK_PRIO_MID, this);
+  Refresh();
 }
 
 PineTimeStyle::~PineTimeStyle() {
+  lv_task_del(taskRefresh);
   lv_obj_clean(lv_scr_act());
 }
 
-bool PineTimeStyle::Refresh() {
+void PineTimeStyle::Refresh() {
   batteryPercentRemaining = batteryController.PercentRemaining();
   if (batteryPercentRemaining.IsUpdated()) {
     auto batteryPercent = batteryPercentRemaining.Get();
@@ -335,6 +339,4 @@ bool PineTimeStyle::Refresh() {
       lv_obj_set_style_local_scale_grad_color(stepGauge, LV_GAUGE_PART_MAIN, LV_STATE_DEFAULT, LV_COLOR_WHITE);
     }
   }
-
-  return running;
-}
+}

src/displayapp/screens/PineTimeStyle.h

@@ -30,7 +30,7 @@ namespace Pinetime {
                       Controllers::MotionController& motionController);
         ~PineTimeStyle() override;
 
-        bool Refresh() override;
+        void Refresh() override;
 
         void OnObjectEvent(lv_obj_t* pObj, lv_event_t i);
 
@@ -80,6 +80,8 @@ namespace Pinetime {
         Controllers::NotificationManager& notificatioManager;
         Controllers::Settings& settingsController;
         Controllers::MotionController& motionController;
+
+        lv_task_t* taskRefresh;
       };
     }
   }

src/displayapp/screens/Screen.cpp

@@ -1,2 +1,6 @@
 #include "Screen.h"
-using namespace Pinetime::Applications::Screens;
+using namespace Pinetime::Applications::Screens;
+
+void Screen::RefreshTaskCallback(lv_task_t* task) {
+  static_cast<Screen*>(task->user_data)->Refresh();
+}

src/displayapp/screens/Screen.h

@@ -2,6 +2,7 @@
 
 #include <cstdint>
 #include "../TouchEvents.h"
+#include <lvgl/lvgl.h>
 
 namespace Pinetime {
   namespace Applications {
@@ -34,25 +35,20 @@ namespace Pinetime {
       };
 
       class Screen {
+      private:
+        virtual void Refresh() {
+        }
+
       public:
         explicit Screen(DisplayApp* app) : app {app} {
         }
         virtual ~Screen() = default;
 
-        /**
-         * Most of the time, apps only react to events (touch events, for example).
-         * In this case you don't need to do anything in this method.
-         *
-         * For example, InfiniPaint does nothing in Refresh().
-         * But, if you want to update your display periodically, draw an animation...
-         * you cannot do it in a touch event handler because these handlers are not
-         * called if the user does not touch the screen.
-         *
-         * That's why Refresh() is there: update the display periodically.
-         *
-         * @return false if the app can be closed, true if it must continue to run
-         **/
-        virtual bool Refresh() = 0;
+        static void RefreshTaskCallback(lv_task_t* task);
+
+        bool IsRunning() const {
+          return running;
+        }
 
         /** @return false if the button hasn't been handled by the app, true if it has been handled */
         virtual bool OnButtonPushed() {

src/displayapp/screens/ScreenList.h

@@ -30,11 +30,6 @@ namespace Pinetime {
           lv_obj_clean(lv_scr_act());
         }
 
-        bool Refresh() override {
-          running = current->Refresh();
-          return running;
-        }
-
         bool OnTouchEvent(TouchEvents event) override {
 
           if (mode == ScreenListModes::UpDown) {
@@ -110,4 +105,4 @@ namespace Pinetime {
       };
     }
   }
-}
+}

src/displayapp/screens/Steps.cpp

@@ -50,20 +50,20 @@ Steps::Steps(
   lv_obj_set_size(backgroundLabel, 240, 240);
   lv_obj_set_pos(backgroundLabel, 0, 0);
   lv_label_set_text_static(backgroundLabel, "");
+
+  taskRefresh = lv_task_create(RefreshTaskCallback, 100, LV_TASK_PRIO_MID, this);
 }
 
 Steps::~Steps() {
+  lv_task_del(taskRefresh);
   lv_obj_clean(lv_scr_act());
 }
 
-bool Steps::Refresh() {
-
+void Steps::Refresh() {
   stepsCount = motionController.NbSteps();
-  
+
   lv_label_set_text_fmt(lSteps, "%li", stepsCount);
   lv_obj_align(lSteps, nullptr, LV_ALIGN_CENTER, 0, -20);
-  
-  lv_arc_set_value(stepsArc, int16_t(500 * stepsCount / settingsController.GetStepsGoal()));
 
-  return running;
+  lv_arc_set_value(stepsArc, int16_t(500 * stepsCount / settingsController.GetStepsGoal()));
 }

src/displayapp/screens/Steps.h

@@ -15,24 +15,23 @@ namespace Pinetime {
     namespace Screens {
 
       class Steps : public Screen {
-        public:
-          Steps(DisplayApp* app, Controllers::MotionController& motionController, Controllers::Settings &settingsController);
-          ~Steps() override;
+      public:
+        Steps(DisplayApp* app, Controllers::MotionController& motionController, Controllers::Settings& settingsController);
+        ~Steps() override;
 
-          bool Refresh() override;
-          
+        void Refresh() override;
 
-        private:          
+      private:
+        Controllers::MotionController& motionController;
+        Controllers::Settings& settingsController;
 
-          Controllers::MotionController& motionController;
-          Controllers::Settings& settingsController;
+        lv_obj_t* lSteps;
+        lv_obj_t* lStepsIcon;
+        lv_obj_t* stepsArc;
 
-          lv_obj_t * lSteps;
-          lv_obj_t * lStepsIcon;
-          lv_obj_t * stepsArc;
-
-          uint32_t stepsCount;
+        uint32_t stepsCount;
 
+        lv_task_t* taskRefresh;
       };
     }
   }

src/displayapp/screens/StopWatch.cpp

@@ -48,7 +48,6 @@ static void stop_lap_event_handler(lv_obj_t* obj, lv_event_t event) {
 StopWatch::StopWatch(DisplayApp* app, System::SystemTask& systemTask)
   : Screen(app),
     systemTask {systemTask},
-    running {true},
     currentState {States::Init},
     startTime {},
     oldTimeElapsed {},
@@ -101,9 +100,12 @@ StopWatch::StopWatch(DisplayApp* app, System::SystemTask& systemTask)
   lv_obj_set_style_local_text_color(lapTwoText, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, LV_COLOR_YELLOW);
   lv_obj_align(lapTwoText, lv_scr_act(), LV_ALIGN_IN_LEFT_MID, 50, 55);
   lv_label_set_text(lapTwoText, "");
+
+  taskRefresh = lv_task_create(RefreshTaskCallback, 20, LV_TASK_PRIO_MID, this);
 }
 
 StopWatch::~StopWatch() {
+  lv_task_del(taskRefresh);
   systemTask.PushMessage(Pinetime::System::Messages::EnableSleeping);
   lv_obj_clean(lv_scr_act());
 }
@@ -149,7 +151,7 @@ void StopWatch::pause() {
   systemTask.PushMessage(Pinetime::System::Messages::EnableSleeping);
 }
 
-bool StopWatch::Refresh() {
+void StopWatch::Refresh() {
   if (currentState == States::Running) {
     timeElapsed = calculateDelta(startTime, xTaskGetTickCount());
     currentTimeSeparated = convertTicksToTimeSegments((oldTimeElapsed + timeElapsed));
@@ -157,7 +159,6 @@ bool StopWatch::Refresh() {
     lv_label_set_text_fmt(time, "%02d:%02d", currentTimeSeparated.mins, currentTimeSeparated.secs);
     lv_label_set_text_fmt(msecTime, "%02d", currentTimeSeparated.hundredths);
   }
-  return running;
 }
 
 void StopWatch::playPauseBtnEventHandler(lv_event_t event) {
@@ -196,8 +197,7 @@ void StopWatch::stopLapBtnEventHandler(lv_event_t event) {
 bool StopWatch::OnButtonPushed() {
   if (currentState == States::Running) {
     pause();
-  } else {
-    running = false;
+    return true;
   }
-  return true;
+  return false;
 }

src/displayapp/screens/StopWatch.h

@@ -64,7 +64,7 @@ namespace Pinetime::Applications::Screens {
   public:
     StopWatch(DisplayApp* app, System::SystemTask& systemTask);
     ~StopWatch() override;
-    bool Refresh() override;
+    void Refresh() override;
 
     void playPauseBtnEventHandler(lv_event_t event);
     void stopLapBtnEventHandler(lv_event_t event);
@@ -77,7 +77,6 @@ namespace Pinetime::Applications::Screens {
   private:
     Pinetime::System::SystemTask& systemTask;
     TickType_t timeElapsed;
-    bool running;
     States currentState;
     TickType_t startTime;
     TickType_t oldTimeElapsed;
@@ -86,5 +85,7 @@ namespace Pinetime::Applications::Screens {
     int lapNr = 0;
     lv_obj_t *time, *msecTime, *btnPlayPause, *btnStopLap, *txtPlayPause, *txtStopLap;
     lv_obj_t *lapOneText, *lapTwoText;
+
+    lv_task_t* taskRefresh;
   };
 }

src/displayapp/screens/SystemInfo.cpp

@@ -63,13 +63,6 @@ SystemInfo::~SystemInfo() {
   lv_obj_clean(lv_scr_act());
 }
 
-bool SystemInfo::Refresh() {
-  if (running) {
-    screens.Refresh();
-  }
-  return running;
-}
-
 bool SystemInfo::OnButtonPushed() {
   running = false;
   return true;

src/displayapp/screens/SystemInfo.h

@@ -30,7 +30,6 @@ namespace Pinetime {
                             Pinetime::Drivers::WatchdogView& watchdog,
                             Pinetime::Controllers::MotionController& motionController);
         ~SystemInfo() override;
-        bool Refresh() override;
         bool OnButtonPushed() override;
         bool OnTouchEvent(TouchEvents event) override;
 
@@ -56,4 +55,4 @@ namespace Pinetime {
       };
     }
   }
-}
+}

src/displayapp/screens/Tile.cpp

@@ -120,10 +120,6 @@ void Tile::UpdateScreen() {
   lv_label_set_text(batteryIcon, BatteryIcon::GetBatteryIcon(batteryController.PercentRemaining()));
 }
 
-bool Tile::Refresh() {
-  return running;
-}
-
 void Tile::OnObjectEvent(lv_obj_t* obj, lv_event_t event, uint32_t buttonId) {
   if (event == LV_EVENT_VALUE_CHANGED) {
     app->StartApp(apps[buttonId], DisplayApp::FullRefreshDirections::Up);

src/displayapp/screens/Tile.h

@@ -30,7 +30,6 @@ namespace Pinetime {
 
         ~Tile() override;
 
-        bool Refresh() override;
         void UpdateScreen();
         void OnObjectEvent(lv_obj_t* obj, lv_event_t event, uint32_t buttonId);
 

src/displayapp/screens/Timer.cpp

@@ -4,10 +4,8 @@
 #include "Symbols.h"
 #include "lvgl/lvgl.h"
 
-
 using namespace Pinetime::Applications::Screens;
 
-
 static void btnEventHandler(lv_obj_t* obj, lv_event_t event) {
   Timer* screen = static_cast<Timer*>(obj->user_data);
   screen->OnButtonEvent(obj, event);
@@ -22,7 +20,7 @@ void Timer::createButtons() {
   lv_obj_set_width(btnMinutesUp, 60);
   txtMUp = lv_label_create(btnMinutesUp, nullptr);
   lv_label_set_text(txtMUp, "+");
-  
+
   btnMinutesDown = lv_btn_create(lv_scr_act(), nullptr);
   btnMinutesDown->user_data = this;
   lv_obj_set_event_cb(btnMinutesDown, btnEventHandler);
@@ -31,7 +29,7 @@ void Timer::createButtons() {
   lv_obj_set_width(btnMinutesDown, 60);
   txtMDown = lv_label_create(btnMinutesDown, nullptr);
   lv_label_set_text(txtMDown, "-");
-  
+
   btnSecondsUp = lv_btn_create(lv_scr_act(), nullptr);
   btnSecondsUp->user_data = this;
   lv_obj_set_event_cb(btnSecondsUp, btnEventHandler);
@@ -40,7 +38,7 @@ void Timer::createButtons() {
   lv_obj_set_width(btnSecondsUp, 60);
   txtSUp = lv_label_create(btnSecondsUp, nullptr);
   lv_label_set_text(txtSUp, "+");
-  
+
   btnSecondsDown = lv_btn_create(lv_scr_act(), nullptr);
   btnSecondsDown->user_data = this;
   lv_obj_set_event_cb(btnSecondsDown, btnEventHandler);
@@ -49,24 +47,20 @@ void Timer::createButtons() {
   lv_obj_set_width(btnSecondsDown, 60);
   txtSDown = lv_label_create(btnSecondsDown, nullptr);
   lv_label_set_text(txtSDown, "-");
-  
 }
 
-
 Timer::Timer(DisplayApp* app, Controllers::TimerController& timerController)
-    : Screen(app),
-      running{true},
-      timerController{timerController} {
-  
+  : Screen(app), running {true}, timerController {timerController} {
+
   time = lv_label_create(lv_scr_act(), nullptr);
   lv_obj_set_style_local_text_font(time, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, &jetbrains_mono_76);
   lv_obj_set_style_local_text_color(time, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, LV_COLOR_GRAY);
-  
+
   uint32_t seconds = timerController.GetTimeRemaining() / 1000;
   lv_label_set_text_fmt(time, "%02lu:%02lu", seconds / 60, seconds % 60);
 
   lv_obj_align(time, lv_scr_act(), LV_ALIGN_IN_LEFT_MID, 0, -20);
-  
+
   btnPlayPause = lv_btn_create(lv_scr_act(), nullptr);
   btnPlayPause->user_data = this;
   lv_obj_set_event_cb(btnPlayPause, btnEventHandler);
@@ -79,20 +73,20 @@ Timer::Timer(DisplayApp* app, Controllers::TimerController& timerController)
     lv_label_set_text(txtPlayPause, Symbols::play);
     createButtons();
   }
-  
+
+  taskRefresh = lv_task_create(RefreshTaskCallback, 20, LV_TASK_PRIO_MID, this);
 }
 
 Timer::~Timer() {
+  lv_task_del(taskRefresh);
   lv_obj_clean(lv_scr_act());
-  
 }
 
-bool Timer::Refresh() {
+void Timer::Refresh() {
   if (timerController.IsRunning()) {
     uint32_t seconds = timerController.GetTimeRemaining() / 1000;
     lv_label_set_text_fmt(time, "%02lu:%02lu", seconds / 60, seconds % 60);
   }
-  return running;
 }
 
 void Timer::OnButtonEvent(lv_obj_t* obj, lv_event_t event) {
@@ -105,11 +99,11 @@ void Timer::OnButtonEvent(lv_obj_t* obj, lv_event_t event) {
         secondsToSet = seconds % 60;
         timerController.StopTimer();
         createButtons();
-        
+
       } else if (secondsToSet + minutesToSet > 0) {
         lv_label_set_text(txtPlayPause, Symbols::pause);
         timerController.StartTimer((secondsToSet + minutesToSet * 60) * 1000);
-        
+
         lv_obj_del(btnSecondsDown);
         btnSecondsDown = nullptr;
         lv_obj_del(btnSecondsUp);
@@ -118,7 +112,6 @@ void Timer::OnButtonEvent(lv_obj_t* obj, lv_event_t event) {
         btnMinutesDown = nullptr;
         lv_obj_del(btnMinutesUp);
         btnMinutesUp = nullptr;
-        
       }
     } else {
       if (!timerController.IsRunning()) {
@@ -129,7 +122,7 @@ void Timer::OnButtonEvent(lv_obj_t* obj, lv_event_t event) {
             minutesToSet++;
           }
           lv_label_set_text_fmt(time, "%02d:%02d", minutesToSet, secondsToSet);
-          
+
         } else if (obj == btnMinutesDown) {
           if (minutesToSet == 0) {
             minutesToSet = 59;
@@ -137,7 +130,7 @@ void Timer::OnButtonEvent(lv_obj_t* obj, lv_event_t event) {
             minutesToSet--;
           }
           lv_label_set_text_fmt(time, "%02d:%02d", minutesToSet, secondsToSet);
-          
+
         } else if (obj == btnSecondsUp) {
           if (secondsToSet >= 59) {
             secondsToSet = 0;
@@ -145,7 +138,7 @@ void Timer::OnButtonEvent(lv_obj_t* obj, lv_event_t event) {
             secondsToSet++;
           }
           lv_label_set_text_fmt(time, "%02d:%02d", minutesToSet, secondsToSet);
-          
+
         } else if (obj == btnSecondsDown) {
           if (secondsToSet == 0) {
             secondsToSet = 59;
@@ -153,21 +146,16 @@ void Timer::OnButtonEvent(lv_obj_t* obj, lv_event_t event) {
             secondsToSet--;
           }
           lv_label_set_text_fmt(time, "%02d:%02d", minutesToSet, secondsToSet);
-          
         }
       }
-      
     }
-    
   }
-  
 }
 
-
 void Timer::setDone() {
   lv_label_set_text(time, "00:00");
   lv_label_set_text(txtPlayPause, Symbols::play);
   secondsToSet = 0;
   minutesToSet = 0;
   createButtons();
-}
+}

src/displayapp/screens/Timer.h

@@ -8,35 +8,32 @@
 #include "components/timer/TimerController.h"
 
 namespace Pinetime::Applications::Screens {
-  
-  
+
   class Timer : public Screen {
   public:
-    
-    enum class Modes {
-      Normal, Done
-    };
-    
+    enum class Modes { Normal, Done };
+
     Timer(DisplayApp* app, Controllers::TimerController& timerController);
-    
+
     ~Timer() override;
-    
-    bool Refresh() override;
-    
+
+    void Refresh() override;
+
     void setDone();
-    
+
     void OnButtonEvent(lv_obj_t* obj, lv_event_t event);
-  
+
   private:
-    
     bool running;
     uint8_t secondsToSet = 0;
     uint8_t minutesToSet = 0;
     Controllers::TimerController& timerController;
-    
+
     void createButtons();
-    
-    lv_obj_t* time, * msecTime, * btnPlayPause, * txtPlayPause, * btnMinutesUp, * btnMinutesDown, * btnSecondsUp, * btnSecondsDown, * txtMUp,
-        * txtMDown, * txtSUp, * txtSDown;
+
+    lv_obj_t *time, *msecTime, *btnPlayPause, *txtPlayPause, *btnMinutesUp, *btnMinutesDown, *btnSecondsUp, *btnSecondsDown, *txtMUp,
+      *txtMDown, *txtSUp, *txtSDown;
+
+    lv_task_t* taskRefresh;
   };
-}
+}

src/displayapp/screens/Twos.cpp

@@ -102,10 +102,6 @@ Twos::~Twos() {
   lv_obj_clean(lv_scr_act());
 }
 
-bool Twos::Refresh() {
-  return running;
-}
-
 bool Twos::placeNewTile() {
   std::vector<std::pair<int, int>> availableCells;
   for (int row = 0; row < 4; row++) {
@@ -295,4 +291,4 @@ void Twos::updateGridDisplay(Tile grid[][4]) {
       }
     }
   }
-}
+}

src/displayapp/screens/Twos.h

@@ -14,7 +14,6 @@ namespace Pinetime {
       public:
         Twos(DisplayApp* app);
         ~Twos() override;
-        bool Refresh() override;
 
         bool OnTouchEvent(TouchEvents event) override;
 
@@ -36,4 +35,4 @@ namespace Pinetime {
       };
     }
   }
-}
+}

src/displayapp/screens/WatchFaceAnalog.cpp

@@ -119,10 +119,12 @@ WatchFaceAnalog::WatchFaceAnalog(Pinetime::Applications::DisplayApp* app,
   lv_style_set_line_rounded(&hour_line_style_trace, LV_STATE_DEFAULT, false);
   lv_obj_add_style(hour_body_trace, LV_LINE_PART_MAIN, &hour_line_style_trace);
 
+  taskRefresh = lv_task_create(RefreshTaskCallback, 20, LV_TASK_PRIO_MID, this);
   UpdateClock();
 }
 
 WatchFaceAnalog::~WatchFaceAnalog() {
+  lv_task_del(taskRefresh);
 
   lv_style_reset(&hour_line_style);
   lv_style_reset(&hour_line_style_trace);
@@ -176,7 +178,7 @@ void WatchFaceAnalog::UpdateClock() {
   }
 }
 
-bool WatchFaceAnalog::Refresh() {
+void WatchFaceAnalog::Refresh() {
   batteryPercentRemaining = batteryController.PercentRemaining();
   if (batteryPercentRemaining.IsUpdated()) {
     auto batteryPercent = batteryPercentRemaining.Get();
@@ -211,6 +213,4 @@ bool WatchFaceAnalog::Refresh() {
       currentDay = day;
     }
   }
-
-  return true;
 }

src/displayapp/screens/WatchFaceAnalog.h

@@ -32,7 +32,7 @@ namespace Pinetime {
 
         ~WatchFaceAnalog() override;
 
-        bool Refresh() override;
+        void Refresh() override;
 
       private:
         uint8_t sHour, sMinute, sSecond;
@@ -83,6 +83,8 @@ namespace Pinetime {
         Controllers::Settings& settingsController;
 
         void UpdateClock();
+
+        lv_task_t* taskRefresh;
       };
     }
   }

src/displayapp/screens/WatchFaceDigital.cpp

@@ -100,13 +100,17 @@ WatchFaceDigital::WatchFaceDigital(DisplayApp* app,
   lv_obj_set_style_local_text_color(stepIcon, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, lv_color_hex(0x00FFE7));
   lv_label_set_text(stepIcon, Symbols::shoe);
   lv_obj_align(stepIcon, stepValue, LV_ALIGN_OUT_LEFT_MID, -5, 0);
+
+  taskRefresh = lv_task_create(RefreshTaskCallback, 20, LV_TASK_PRIO_MID, this);
+  Refresh();
 }
 
 WatchFaceDigital::~WatchFaceDigital() {
+  lv_task_del(taskRefresh);
   lv_obj_clean(lv_scr_act());
 }
 
-bool WatchFaceDigital::Refresh() {
+void WatchFaceDigital::Refresh() {
   batteryPercentRemaining = batteryController.PercentRemaining();
   if (batteryPercentRemaining.IsUpdated()) {
     auto batteryPercent = batteryPercentRemaining.Get();
@@ -240,6 +244,4 @@ bool WatchFaceDigital::Refresh() {
     lv_obj_align(stepValue, lv_scr_act(), LV_ALIGN_IN_BOTTOM_RIGHT, -5, -2);
     lv_obj_align(stepIcon, stepValue, LV_ALIGN_OUT_LEFT_MID, -5, 0);
   }
-
-  return running;
 }

src/displayapp/screens/WatchFaceDigital.h

@@ -33,7 +33,7 @@ namespace Pinetime {
                          Controllers::MotionController& motionController);
         ~WatchFaceDigital() override;
 
-        bool Refresh() override;
+        void Refresh() override;
 
         void OnObjectEvent(lv_obj_t* pObj, lv_event_t i);
 
@@ -75,6 +75,8 @@ namespace Pinetime {
         Controllers::Settings& settingsController;
         Controllers::HeartRateController& heartRateController;
         Controllers::MotionController& motionController;
+
+        lv_task_t* taskRefresh;
       };
     }
   }

src/displayapp/screens/settings/QuickSettings.cpp

@@ -164,7 +164,3 @@ bool QuickSettings::OnTouchEvent(Pinetime::Applications::TouchEvents event) {
       return true;
   }
 }
-
-bool QuickSettings::Refresh() {
-  return running;
-}

src/displayapp/screens/settings/QuickSettings.h

@@ -27,8 +27,6 @@ namespace Pinetime {
 
         ~QuickSettings() override;
 
-        bool Refresh() override;
-
         bool OnTouchEvent(Pinetime::Applications::TouchEvents event) override;
         void OnButtonEvent(lv_obj_t* object, lv_event_t event);
 

src/displayapp/screens/settings/SettingDisplay.cpp

@@ -80,10 +80,6 @@ SettingDisplay::~SettingDisplay() {
   settingsController.SaveSettings();
 }
 
-bool SettingDisplay::Refresh() {
-  return running;
-}
-
 void SettingDisplay::UpdateSelected(lv_obj_t* object, lv_event_t event) {
   if (event == LV_EVENT_VALUE_CHANGED) {
     for (int i = 0; i < optionsTotal; i++) {
@@ -110,4 +106,4 @@ void SettingDisplay::UpdateSelected(lv_obj_t* object, lv_event_t event) {
       }
     }
   }
-}
+}

src/displayapp/screens/settings/SettingDisplay.h

@@ -15,7 +15,6 @@ namespace Pinetime {
         SettingDisplay(DisplayApp* app, Pinetime::Controllers::Settings& settingsController);
         ~SettingDisplay() override;
 
-        bool Refresh() override;
         void UpdateSelected(lv_obj_t* object, lv_event_t event);
 
       private:

src/displayapp/screens/settings/SettingSteps.cpp

@@ -70,11 +70,6 @@ SettingSteps::~SettingSteps() {
   settingsController.SaveSettings();
 }
 
-bool SettingSteps::Refresh() {
-  return running;
-}
-
-
 void SettingSteps::UpdateSelected(lv_obj_t *object, lv_event_t event) {
   uint32_t value = settingsController.GetStepsGoal();
   if(object == btnPlus && (event == LV_EVENT_PRESSED)) {
@@ -95,4 +90,4 @@ void SettingSteps::UpdateSelected(lv_obj_t *object, lv_event_t event) {
     }
   }
 
-}
+}

src/displayapp/screens/settings/SettingSteps.h

@@ -10,22 +10,19 @@ namespace Pinetime {
   namespace Applications {
     namespace Screens {
 
-      class SettingSteps : public Screen{
-        public:
-          SettingSteps(DisplayApp* app, Pinetime::Controllers::Settings &settingsController);
-          ~SettingSteps() override;
+      class SettingSteps : public Screen {
+      public:
+        SettingSteps(DisplayApp* app, Pinetime::Controllers::Settings& settingsController);
+        ~SettingSteps() override;
 
-          bool Refresh() override;
-          void UpdateSelected(lv_obj_t *object, lv_event_t event);
-         
-        private:          
+        void UpdateSelected(lv_obj_t* object, lv_event_t event);
 
-          Controllers::Settings& settingsController;
+      private:
+        Controllers::Settings& settingsController;
 
-          lv_obj_t * stepValue;
-          lv_obj_t * btnPlus;
-          lv_obj_t * btnMinus;
-          
+        lv_obj_t* stepValue;
+        lv_obj_t* btnPlus;
+        lv_obj_t* btnMinus;
       };
     }
   }

src/displayapp/screens/settings/SettingTimeFormat.cpp

@@ -64,10 +64,6 @@ SettingTimeFormat::~SettingTimeFormat() {
   settingsController.SaveSettings();
 }
 
-bool SettingTimeFormat::Refresh() {
-  return running;
-}
-
 void SettingTimeFormat::UpdateSelected(lv_obj_t* object, lv_event_t event) {
   if (event == LV_EVENT_VALUE_CHANGED) {
     for (int i = 0; i < optionsTotal; i++) {
@@ -86,4 +82,4 @@ void SettingTimeFormat::UpdateSelected(lv_obj_t* object, lv_event_t event) {
       }
     }
   }
-}
+}

src/displayapp/screens/settings/SettingTimeFormat.h

@@ -15,7 +15,6 @@ namespace Pinetime {
         SettingTimeFormat(DisplayApp* app, Pinetime::Controllers::Settings& settingsController);
         ~SettingTimeFormat() override;
 
-        bool Refresh() override;
         void UpdateSelected(lv_obj_t* object, lv_event_t event);
 
       private:

src/displayapp/screens/settings/SettingWakeUp.cpp

@@ -72,10 +72,6 @@ SettingWakeUp::~SettingWakeUp() {
   settingsController.SaveSettings();
 }
 
-bool SettingWakeUp::Refresh() {
-  return running;
-}
-
 void SettingWakeUp::UpdateSelected(lv_obj_t* object, lv_event_t event) {
   using WakeUpMode = Pinetime::Controllers::Settings::WakeUpMode;
   if (event == LV_EVENT_VALUE_CHANGED && !ignoringEvents) {

src/displayapp/screens/settings/SettingWakeUp.h

@@ -15,7 +15,6 @@ namespace Pinetime {
         SettingWakeUp(DisplayApp* app, Pinetime::Controllers::Settings& settingsController);
         ~SettingWakeUp() override;
 
-        bool Refresh() override;
         void UpdateSelected(lv_obj_t* object, lv_event_t event);
 
       private:

src/displayapp/screens/settings/SettingWatchFace.cpp

@@ -75,10 +75,6 @@ SettingWatchFace::~SettingWatchFace() {
   settingsController.SaveSettings();
 }
 
-bool SettingWatchFace::Refresh() {
-  return running;
-}
-
 void SettingWatchFace::UpdateSelected(lv_obj_t* object, lv_event_t event) {
   if (event == LV_EVENT_VALUE_CHANGED) {
     for (uint8_t i = 0; i < optionsTotal; i++) {
@@ -90,4 +86,4 @@ void SettingWatchFace::UpdateSelected(lv_obj_t* object, lv_event_t event) {
       }
     }
   }
-}
+}

src/displayapp/screens/settings/SettingWatchFace.h

@@ -15,7 +15,6 @@ namespace Pinetime {
         SettingWatchFace(DisplayApp* app, Pinetime::Controllers::Settings& settingsController);
         ~SettingWatchFace() override;
 
-        bool Refresh() override;
         void UpdateSelected(lv_obj_t* object, lv_event_t event);
 
       private:

src/displayapp/screens/settings/Settings.cpp

@@ -26,13 +26,6 @@ Settings::~Settings() {
   lv_obj_clean(lv_scr_act());
 }
 
-bool Settings::Refresh() {
-
-  if (running)
-    running = screens.Refresh();
-  return running;
-}
-
 bool Settings::OnTouchEvent(Pinetime::Applications::TouchEvents event) {
   return screens.OnTouchEvent(event);
 }

src/displayapp/screens/settings/Settings.h

@@ -14,8 +14,6 @@ namespace Pinetime {
         Settings(DisplayApp* app, Pinetime::Controllers::Settings& settingsController);
         ~Settings() override;
 
-        bool Refresh() override;
-
         bool OnTouchEvent(Pinetime::Applications::TouchEvents event) override;
 
       private: