Update the periodic watchdog only if it is not stopped
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bed0963769
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a4d5ca833c
1 changed files with 7 additions and 2 deletions
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@ -28,11 +28,12 @@
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*
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*
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* This file is part of the Contiki operating system.
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* This file is part of the Contiki operating system.
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*
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*
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* @(#)$Id: watchdog.c,v 1.3 2008/01/08 08:03:02 adamdunkels Exp $
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* @(#)$Id: watchdog.c,v 1.4 2008/01/21 10:39:23 adamdunkels Exp $
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*/
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*/
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#include <io.h>
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#include <io.h>
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#include "dev/watchdog.h"
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#include "dev/watchdog.h"
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static int stopped = 0;
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/*---------------------------------------------------------------------------*/
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/*---------------------------------------------------------------------------*/
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void
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void
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watchdog_init(void)
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watchdog_init(void)
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@ -48,6 +49,7 @@ watchdog_start(void)
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/* We setup the watchdog to reset the device after one second,
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/* We setup the watchdog to reset the device after one second,
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unless watchdog_periodic() is called. */
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unless watchdog_periodic() is called. */
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WDTCTL = WDTPW | WDTCNTCL | WDT_ARST_1000;
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WDTCTL = WDTPW | WDTCNTCL | WDT_ARST_1000;
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stopped = 0;
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}
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}
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/*---------------------------------------------------------------------------*/
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/*---------------------------------------------------------------------------*/
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void
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void
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@ -55,13 +57,16 @@ watchdog_periodic(void)
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{
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{
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/* This function is called periodically to restart the watchdog
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/* This function is called periodically to restart the watchdog
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timer. */
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timer. */
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if(!stopped) {
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WDTCTL = (WDTCTL & 0xff) | WDTPW | WDTCNTCL;
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WDTCTL = (WDTCTL & 0xff) | WDTPW | WDTCNTCL;
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}
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}
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}
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/*---------------------------------------------------------------------------*/
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/*---------------------------------------------------------------------------*/
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void
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void
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watchdog_stop(void)
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watchdog_stop(void)
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{
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{
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WDTCTL = WDTPW | WDTHOLD;
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WDTCTL = WDTPW | WDTHOLD;
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stopped = 1;
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}
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}
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/*---------------------------------------------------------------------------*/
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/*---------------------------------------------------------------------------*/
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void
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void
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