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/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @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).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#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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