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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/>.
*
*/
#ifdef __IMXRT1062__
/**
* HAL Watchdog for Teensy 4.0 (IMXRT1062DVL6A) / 4.1 (IMXRT1062DVJ6A)
*/
#include "../../inc/MarlinConfig.h"
#if ENABLED(USE_WATCHDOG)
#include "watchdog.h"
#define WDT_TIMEOUT TERN(WATCHDOG_DURATION_8S, 8, 4) // 4 or 8 second timeout
constexpr uint8_t timeoutval = (WDT_TIMEOUT - 0.5f) / 0.5f;
void watchdog_init() {
CCM_CCGR3 |= CCM_CCGR3_WDOG1(3); // enable WDOG1 clocks
WDOG1_WMCR = 0; // disable power down PDE
WDOG1_WCR |= WDOG_WCR_SRS | WDOG_WCR_WT(timeoutval);
WDOG1_WCR |= WDOG_WCR_WDE | WDOG_WCR_WDT | WDOG_WCR_SRE;
}
void HAL_watchdog_refresh() {
// Watchdog refresh sequence
WDOG1_WSR = 0x5555;
WDOG1_WSR = 0xAAAA;
}
#endif // USE_WATCHDOG
#endif // __IMXRT1062__
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