56 lines
2 KiB
C++
56 lines
2 KiB
C++
/*
|
|
* Marlin 3D Printer Firmware
|
|
* Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
|
|
*
|
|
* Based on Sprinter and grbl.
|
|
* Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
#include "Marlin.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) {
|
|
SERIAL_ERROR_START;
|
|
SERIAL_ERRORLNPGM("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
|