111 lines
3.8 KiB
C
111 lines
3.8 KiB
C
/****************************************************************************
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* include/wdog.h
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*
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* Copyright (C) 2007-2009 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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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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*
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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
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* 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 OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __INCLUDE_WDOG_H
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#define __INCLUDE_WDOG_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <sched.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Global Type Declarations
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****************************************************************************/
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/* The arguments are passed as uint32_t values. For systems where the
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* sizeof(pointer) < sizeof(uint32_t), the following union defines the
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* alignment of the pointer within the uint32_t. For example, the SDCC
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* MCS51 general pointer is 24-bits, but uint32_t is 32-bits (of course).
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*
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* For systems where sizeof(pointer) > sizeof(uint32_t), we will have to do
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* some redesign.
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*/
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union wdparm_u
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{
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FAR void *pvarg;
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FAR uint32_t *dwarg;
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};
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typedef union wdparm_u wdparm_t;
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/* This is the form of the function that is called when the
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* watchdog function expires. Up to four parameters may be passed.
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*/
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typedef CODE void (*wdentry_t)(int argc, uint32_t arg1, ...);
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/* Watchdog 'handle' */
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typedef FAR struct wdog_s *WDOG_ID;
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/****************************************************************************
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* Global Variables
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****************************************************************************/
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/****************************************************************************
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* Global Function Prototypes
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****************************************************************************/
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#ifdef __cplusplus
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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WDOG_ID wd_create(void);
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int wd_delete(WDOG_ID wdog);
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int wd_start(WDOG_ID wdog, int delay, wdentry_t wdentry, int argc, ...);
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int wd_cancel(WDOG_ID wdog);
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int wd_gettime(WDOG_ID wdog);
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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif /* _WDOG_H_ */
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