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MarlinFirmware/Marlin/src/HAL/SAMD51/watchdog.h
2020-07-22 22:20:14 -05:00

32 lines
1.2 KiB
C

/**
* Marlin 3D Printer Firmware
*
* Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
* SAMD51 HAL developed by Giuliano Zaro (AKA GMagician)
*
* 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 <https://www.gnu.org/licenses/>.
*
*/
#pragma once
// Initialize watchdog with a 4 second interrupt time
void watchdog_init();
// Reset watchdog. MUST be called at least every 4 seconds after the
// first watchdog_init or SAMD will go into emergency procedures.
inline void HAL_watchdog_refresh() {
SYNC(WDT->SYNCBUSY.bit.CLEAR); // Test first if previous is 'ongoing' to save time waiting for command execution
WDT->CLEAR.reg = WDT_CLEAR_CLEAR_KEY;
}