reflow-oven-control-sw/stm-firmware/include/reflow-controller/safety/watchdog.h

51 lines
1.6 KiB
C

/* Reflow Oven Controller
*
* Copyright (C) 2020 Mario Hüttel <mario.huettel@gmx.net>
*
* This file is part of the Reflow Oven Controller Project.
*
* The reflow oven controller is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* The Reflow Oven Control Firmware 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 the reflow oven controller project.
* If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __WATCHDOG_H__
#define __WATCHDOG_H__
#include <reflow-controller/safety/safety-config.h>
#include <stdint.h>
#include <stdbool.h>
/**
* @brief Setup the watchdog for the safety controller
* @param Prescaler to use for the 32 KHz LSI clock
* @return 0 if successful
* @note Once the watchdog is enabled, it cannot be turned off!
*/
int watchdog_setup(uint8_t prescaler);
/**
* @brief Reset watchdog counter
* @param magic Magic value to prevent this fuinction from being called randomly
* @return 0 if successful
*/
int watchdog_ack(uint32_t magic);
/**
* @brief Check if reset was generated by the watchdog.
* @note This also clears the relevant flag, so the function will reutrn false when called a second time
* @return
*/
bool watchdog_check_reset_source(void);
#endif /* __WATCHDOG_H__ */