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Add defines for watchdog configuration.

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This commit is contained in:
dak664 2011-03-13 13:45:12 -04:00
parent 0b2d3d1615
commit a210e14d78
1 changed files with 31 additions and 6 deletions
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37
cpu/avr/watchdog.c
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@ -28,44 +28,69 @@
*
* This file is part of the Contiki operating system.
*
* @(#)$Id: watchdog.c,v 1.3 2010/12/18 20:51:11 dak664 Exp $
*/
/* Dummy watchdog routines for the Raven 1284p */
/* Watchdog routines for the AVR */
/* Default timeout of 2 seconds is available on most MCUs */
#ifndef WATCHDOG_CONF_TIMEOUT
#define WATCHDOG_CONF_TIMEOUT WDTO_2S
//#define WATCHDOG_CONF_TIMEOUT WDTO_4S
#endif
/* While balancing start and stop calls is a good idea, an imbalance will cause
* resets that can take a lot of time to track down.
* Some low power protocols may do this.
* The default is no balance; define WATCHDOG_CONF_BALANCE 1 to override.
*/
#ifndef WATCHDOG_CONF_BALANCE
#define WATCHDOG_CONF_BALANCE 0
#endif
#include "dev/watchdog.h"
#include <avr/wdt.h>
#include <avr/interrupt.h>
#if WATCHDOG_CONF_BALANCE
static int stopped = 0;
#endif
/*---------------------------------------------------------------------------*/
void
watchdog_init(void)
{
MCUSR&=~(1<<WDRF);
#if WATCHDOG_CONF_BALANCE
stopped = 0;
#endif
watchdog_stop();
}
/*---------------------------------------------------------------------------*/
void
watchdog_start(void)
{
#if WATCHDOG_CONF_BALANCE
stopped--;
// if(!stopped)
wdt_enable(WDTO_2S);
if(!stopped)
#endif
wdt_enable(WATCHDOG_CONF_TIMEOUT);
}
/*---------------------------------------------------------------------------*/
void
watchdog_periodic(void)
{
// if(!stopped)
#if WATCHDOG_CONF_BALANCE
if(!stopped)
#endif
wdt_reset();
}
/*---------------------------------------------------------------------------*/
void
watchdog_stop(void)
{
// stopped++;
#if WATCHDOG_CONF_BALANCE
stopped++;
#endif
wdt_disable();
}
/*---------------------------------------------------------------------------*/