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/**
* @file
*
* @ingroup RTEMSScoreWatchdog
*
* @brief This header file provides the interfaces of the
* @ref RTEMSScoreWatchdog related to watchdog ticks which are used by the
* implementation and the @ref RTEMSImplApplConfig.
*/
/*
* COPYRIGHT (c) 1989-2009.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifndef _RTEMS_SCORE_WATCHDOGTICKS_H
#define _RTEMS_SCORE_WATCHDOGTICKS_H
#include <rtems/score/basedefs.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* @addtogroup RTEMSScoreWatchdog
*
* @{
*/
/**
* @brief Type is used to specify the length of intervals.
*
* This type is used to specify the length of intervals.
*/
typedef uint32_t Watchdog_Interval;
/**
* @brief Special watchdog ticks value to indicate an infinite wait.
*/
#define WATCHDOG_NO_TIMEOUT 0
/**
* @brief Default value for the watchdog ticks per timeslice.
*/
#define WATCHDOG_TICKS_PER_TIMESLICE_DEFAULT 50
/**
* @brief The watchdog ticks counter.
*
* With a 1ms watchdog tick, this counter overflows after 50 days since boot.
*/
extern volatile Watchdog_Interval _Watchdog_Ticks_since_boot;
/**
* @brief The watchdog microseconds per tick.
*
* This constant is defined by the application configuration via
* <rtems/confdefs.h>.
*/
extern const uint32_t _Watchdog_Microseconds_per_tick;
/**
* @brief The watchdog nanoseconds per tick.
*
* This constant is defined by the application configuration via
* <rtems/confdefs.h>.
*/
extern const uint32_t _Watchdog_Nanoseconds_per_tick;
/**
* @brief The watchdog ticks per second.
*
* This constant is defined by the application configuration via
* <rtems/confdefs.h>.
*/
extern const uint32_t _Watchdog_Ticks_per_second;
/**
* @brief The watchdog ticks per timeslice.
*
* This constant is defined by the application configuration via
* <rtems/confdefs.h>.
*/
extern const uint32_t _Watchdog_Ticks_per_timeslice;
/** @} */
#ifdef __cplusplus
}
#endif
#endif
/* end of include file */
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