124 lines
4.0 KiB
C
124 lines
4.0 KiB
C
/*
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* Copyright (c) 2014, Texas Instruments Incorporated - http://www.ti.com/
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* \addtogroup cc26xx-clocks
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* @{
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*
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* \defgroup cc26xx-wdt CC13xx/CC26xx watchdog timer driver
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*
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* Driver for the CC13xx/CC26xx Watchdog Timer
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*
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* This file is not called watchdog.c because the filename is in use by
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* TI CC26xxware/CC13xxware
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* @{
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*
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* \file
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* Implementation of the CC13xx/CC26xx watchdog driver.
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*/
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/*---------------------------------------------------------------------------*/
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#include "contiki.h"
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#include "dev/watchdog.h"
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/*---------------------------------------------------------------------------*/
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#include <Board.h>
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#include <ti/drivers/Watchdog.h>
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/*---------------------------------------------------------------------------*/
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#include <stdbool.h>
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#include <stdint.h>
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/*---------------------------------------------------------------------------*/
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#ifdef CONTIKI_WATCHDOG_CONF_TIMER_TOP
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#define CONTIKI_WATCHDOG_TIMER_TOP CONTIKI_WATCHDOG_CONF_TIMER_TOP
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#else
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#define CONTIKI_WATCHDOG_TIMER_TOP 0xFFFFF
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#endif
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/*---------------------------------------------------------------------------*/
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static Watchdog_Handle wd_handle;
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/*---------------------------------------------------------------------------*/
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/**
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* \brief Initialises the CC26xx WDT
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*
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* Simply sets the reload counter to a default value. The WDT is not started
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* yet. To start it, watchdog_start() must be called.
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*/
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void
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watchdog_init(void)
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{
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Watchdog_init();
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Watchdog_Params params;
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Watchdog_Params_init(¶ms);
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params.resetMode = Watchdog_RESET_ON;
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params.debugStallMode = Watchdog_DEBUG_STALL_ON;
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wd_handle = Watchdog_open(Board_WATCHDOG0, ¶ms);
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}
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/*---------------------------------------------------------------------------*/
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/**
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* \brief Starts the CC26xx WDT
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*/
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void
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watchdog_start(void)
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{
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watchdog_periodic();
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}
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/*---------------------------------------------------------------------------*/
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/**
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* \brief Refreshes the CC26xx WDT
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*/
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void
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watchdog_periodic(void)
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{
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Watchdog_setReload(wd_handle, CONTIKI_WATCHDOG_TIMER_TOP);
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}
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/*---------------------------------------------------------------------------*/
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/**
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* \brief Stops the WDT such that it won't timeout and cause MCU reset
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*/
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void
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watchdog_stop(void)
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{
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Watchdog_clear(wd_handle);
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}
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/*---------------------------------------------------------------------------*/
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/**
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* \brief Manually trigger a WDT reboot
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*/
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void
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watchdog_reboot(void)
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{
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watchdog_start();
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while(1);
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}
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/*---------------------------------------------------------------------------*/
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/**
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* @}
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* @}
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*/
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