Firmware2/Marlin/src/HAL/HAL_STM32F1/watchdog_Stm32f1.h

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/**
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* 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/>.
*
*/
/**
* HAL for stm32duino.com based on Libmaple and compatible (STM32F1)
*/
#ifndef WATCHDOG_STM32F1_H
#define WATCHDOG_STM32F1_H
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#include <libmaple/iwdg.h>
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#include "../../inc/MarlinConfig.h"
/**
* The watchdog clock is 40Khz. We need a 4 seconds interval, so use a /256 preescaler and
* 625 reload value (counts down to 0)
* use 1250 for 8 seconds
*/
#define STM32F1_WD_RELOAD 625
// Arduino STM32F1 core now has watchdog support
// Initialize watchdog with a 4 second countdown time
void watchdog_init();
// Reset watchdog. MUST be called at least every 4 seconds after the
// first watchdog_init or STM32F1 will reset.
inline void watchdog_reset() {
#if PIN_EXISTS(LED)
TOGGLE(LED_PIN); // heart beat indicator
#endif
iwdg_feed();
}
#endif // WATCHDOG_STM32F1_H