#include "../../base.h"

#if ENABLED(USE_WATCHDOG)
  #include "watchdog.h"

  // Initialize watchdog with a 4 sec interrupt time
  void watchdog_init() {
    #if ENABLED(WATCHDOG_RESET_MANUAL)
      // We enable the watchdog timer, but only for the interrupt.
      // Take care, as this requires the correct order of operation, with interrupts disabled. See the datasheet of any AVR chip for details.
      wdt_reset();
      _WD_CONTROL_REG = _BV(_WD_CHANGE_BIT) | _BV(WDE);
      _WD_CONTROL_REG = _BV(WDIE) | WDTO_4S;
    #else
      wdt_enable(WDTO_4S);
    #endif
  }

  //===========================================================================
  //=================================== ISR ===================================
  //===========================================================================

  // Watchdog timer interrupt, called if main program blocks >1sec and manual reset is enabled.
  #if ENABLED(WATCHDOG_RESET_MANUAL)
    ISR(WDT_vect) {
      ECHO_LM(ER, "Something is wrong, please turn off the printer.");
      kill(PSTR("ERR:Please Reset")); //kill blocks //16 characters so it fits on a 16x2 display
      while (1); //wait for user or serial reset
    }
  #endif // WATCHDOG_RESET_MANUAL

#endif // USE_WATCHDOG
