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/**
* Marlin 3D Printer Firmware
* Copyright (c) 2020 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 <https://www.gnu.org/licenses/>.
*
*/
/**
* HAL for stm32duino.com based on Libmaple and compatible (STM32F1)
*/
#ifdef __STM32F1__
#include "../../inc/MarlinConfig.h"
#if ENABLED(USE_WATCHDOG)
#include <libmaple/iwdg.h>
#include "watchdog.h"
/**
* The watchdog clock is 40Khz. So for a 4s or 8s interval use a /256 preescaler and 625 or 1250 reload value (counts down to 0).
*/
#define STM32F1_WD_RELOAD TERN(WATCHDOG_DURATION_8S, 1250, 625) // 4 or 8 second timeout
void HAL_watchdog_refresh() {
#if DISABLED(PINS_DEBUGGING) && PIN_EXISTS(LED)
TOGGLE(LED_PIN); // heartbeat indicator
#endif
iwdg_feed();
}
void watchdogSetup() {
// do whatever. don't remove this function.
}
/**
* @brief Initialized the independent hardware watchdog.
*
* @return No return
*
* @details The watchdog clock is 40Khz. So for a 4s or 8s interval use a /256 preescaler and 625 or 1250 reload value (counts down to 0).
*/
void watchdog_init() {
#if DISABLED(DISABLE_WATCHDOG_INIT)
iwdg_init(IWDG_PRE_256, STM32F1_WD_RELOAD);
#endif
}
#endif // USE_WATCHDOG
#endif // __STM32F1__
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