Firmware2/Marlin/watchdog.h

#ifndef __WATCHDOGH
#define __WATCHDOGH
#include "Configuration.h"
#ifdef USE_WATCHDOG

  // intialise watch dog with a 1 sec interrupt time
  void wd_init();
  // pad the dog/reset watchdog. MUST be called at least every second after the first wd_init or avr will go into emergency procedures..
  void wd_reset();

#else
  inline void wd_init() {};
  inline void wd_reset() {};
#endif

#endif