You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
72 lines
2.3 KiB
72 lines
2.3 KiB
/**
|
|
* 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 TARGET_LPC1768
|
|
|
|
#include "../../inc/MarlinConfig.h"
|
|
|
|
#if ENABLED(USE_WATCHDOG)
|
|
|
|
#include <lpc17xx_wdt.h>
|
|
#include "watchdog.h"
|
|
|
|
#define WDT_TIMEOUT_US TERN(WATCHDOG_DURATION_8S, 8000000, 4000000) // 4 or 8 second timeout
|
|
|
|
void watchdog_init() {
|
|
#if ENABLED(WATCHDOG_RESET_MANUAL)
|
|
// We enable the watchdog timer, but only for the interrupt.
|
|
|
|
// Configure WDT to only trigger an interrupt
|
|
// Disable WDT interrupt (just in case, to avoid triggering it!)
|
|
NVIC_DisableIRQ(WDT_IRQn);
|
|
|
|
// We NEED memory barriers to ensure Interrupts are actually disabled!
|
|
// ( https://dzone.com/articles/nvic-disabling-interrupts-on-arm-cortex-m-and-the )
|
|
__DSB();
|
|
__ISB();
|
|
|
|
// Configure WDT to only trigger an interrupt
|
|
// Initialize WDT with the given parameters
|
|
WDT_Init(WDT_CLKSRC_IRC, WDT_MODE_INT_ONLY);
|
|
|
|
// Configure and enable WDT interrupt.
|
|
NVIC_ClearPendingIRQ(WDT_IRQn);
|
|
NVIC_SetPriority(WDT_IRQn, 0); // Use highest priority, so we detect all kinds of lockups
|
|
NVIC_EnableIRQ(WDT_IRQn);
|
|
#else
|
|
WDT_Init(WDT_CLKSRC_IRC, WDT_MODE_RESET);
|
|
#endif
|
|
WDT_Start(WDT_TIMEOUT_US);
|
|
}
|
|
|
|
void HAL_watchdog_refresh() {
|
|
WDT_Feed();
|
|
#if DISABLED(PINS_DEBUGGING) && PIN_EXISTS(LED)
|
|
TOGGLE(LED_PIN); // heartbeat indicator
|
|
#endif
|
|
}
|
|
|
|
// Timeout state
|
|
bool watchdog_timed_out() { return TEST(WDT_ReadTimeOutFlag(), 0); }
|
|
void watchdog_clear_timeout_flag() { WDT_ClrTimeOutFlag(); }
|
|
|
|
#endif // USE_WATCHDOG
|
|
#endif // TARGET_LPC1768
|
|
|