870bfd08f5
* Add traceback after watchdog timeout Add the cpability to perform a traceback following a watchdog timeout. * Enhanced hardware SPI Allow use of either SSP0 or SSP1. Ensure that no data is left in I/O buffers after calls to enable sharing of SSP hardware. * Make flash emulation of eeprom the default Make use of flash for eeprom storage the default. This means that usage of eeprom will not cause USB drive mount/unmount operations. * Allow sharing of SD card SD card I/O operations from the USB stack take place in idle loop, rather than at interrupt time. Allowing sharing of the SPI bus. New configuration options to allow usage of the SD card to be specified. * Fix problem with hardware SPI pins
81 lines
2.3 KiB
C++
81 lines
2.3 KiB
C++
/**
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* Marlin 3D Printer Firmware
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* Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
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*
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* Based on Sprinter and grbl.
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* Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifdef TARGET_LPC1768
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#include "../../inc/MarlinConfig.h"
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#if ENABLED(USE_WATCHDOG)
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#include "lpc17xx_wdt.h"
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#include "watchdog.h"
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void watchdog_init(void) {
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#if ENABLED(WATCHDOG_RESET_MANUAL)
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// We enable the watchdog timer, but only for the interrupt.
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// Configure WDT to only trigger an interrupt
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// Disable WDT interrupt (just in case, to avoid triggering it!)
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NVIC_DisableIRQ(WDT_IRQn);
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// We NEED memory barriers to ensure Interrupts are actually disabled!
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// ( https://dzone.com/articles/nvic-disabling-interrupts-on-arm-cortex-m-and-the )
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__DSB();
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__ISB();
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// Configure WDT to only trigger an interrupt
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// Initialize WDT with the given parameters
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WDT_Init(WDT_CLKSRC_IRC, WDT_MODE_INT_ONLY);
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// Configure and enable WDT interrupt.
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NVIC_ClearPendingIRQ(WDT_IRQn);
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NVIC_SetPriority(WDT_IRQn, 0); // Use highest priority, so we detect all kinds of lockups
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NVIC_EnableIRQ(WDT_IRQn);
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#else
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WDT_Init(WDT_CLKSRC_IRC, WDT_MODE_RESET);
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#endif
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WDT_Start(WDT_TIMEOUT);
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}
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void HAL_clear_reset_source(void) {
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WDT_ClrTimeOutFlag();
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}
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uint8_t HAL_get_reset_source(void) {
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if (TEST(WDT_ReadTimeOutFlag(), 0)) return RST_WATCHDOG;
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return RST_POWER_ON;
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}
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void watchdog_reset() {
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WDT_Feed();
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#if PIN_EXISTS(LED)
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TOGGLE(LED_PIN); // heart beat indicator
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#endif
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}
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#else
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void HAL_clear_reset_source(void) {}
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uint8_t HAL_get_reset_source(void) { return RST_POWER_ON; }
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#endif // USE_WATCHDOG
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#endif // TARGET_LPC1768
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