Add some ping watchdog

Add some ping watchdog

src/ArduinoDUE/Repetier/Commands.cpp

@@ -68,6 +68,9 @@ void Commands::commandLoop()
 void Commands::checkForPeriodicalActions(bool allowNewMoves)
 {
     if(!executePeriodical) return;
+#if FEATURE_WATCHDOG
+            HAL::pingWatchdog();
+#endif
     executePeriodical = 0;
     Extruder::manageTemperatures();
     if(--counter250ms == 0)

src/ArduinoDUE/Repetier/ui.cpp

@@ -57,6 +57,9 @@ void playsound(int tone,int duration)
 {
 #if FEATURE_BEEPER
 if (!HAL::enablesound)return;
+#if FEATURE_WATCHDOG
+            HAL::pingWatchdog();
+#endif
 HAL::tone(BEEPER_PIN, tone);
 HAL::delayMilliseconds(duration);
 HAL::noTone(BEEPER_PIN);