Source/include/timers.h

/*
    FreeRTOS V6.1.1 - Copyright (C) 2011 Real Time Engineers Ltd.

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    This file is part of the FreeRTOS distribution.

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*/


#ifndef TIMERS_H
#define TIMERS_H

#ifndef INC_FREERTOS_H
	#error "include FreeRTOS.h must appear in source files before include timers.h"
#endif

#include "portable.h"
#include "list.h"

#ifdef __cplusplus
extern "C" {
#endif

/* IDs for commands that can be sent/received on the timer queue. */
#define trmCOMMAND_PROCESS_TIMER_OVERFLOW	0 /* For use by the kernel only! */
#define tmrCOMMAND_START					1
#define tmrCOMMAND_STOP						2
#define tmrCOMMAND_CHANGE_PERIOD			3
#define tmrCOMMAND_DELETE					4

/*-----------------------------------------------------------
 * MACROS AND DEFINITIONS
 *----------------------------------------------------------*/

typedef void * xTimerHandle;

/* Define the prototype to which timer callback functions must conform. */
typedef void (*tmrTIMER_CALLBACK)( xTimerHandle xTimer );

portBASE_TYPE xTimerCreateTimerTask( void ) PRIVILEGED_FUNCTION;
xTimerHandle xTimerCreate( const signed char *pcTimerName, portTickType xTimerPeriod, unsigned portBASE_TYPE uxAutoReload, void * pvTimerID, tmrTIMER_CALLBACK pxCallbackFunction ) PRIVILEGED_FUNCTION;
void *pvTimerGetTimerID( xTimerHandle xTimer ) PRIVILEGED_FUNCTION;
portBASE_TYPE xTimerGenericCommand( xTimerHandle xTimer, portBASE_TYPE xCommandID, portTickType xOptionalValue, portBASE_TYPE *pxHigherPriorityTaskWoken, portTickType xBlockTime ) PRIVILEGED_FUNCTION;
portBASE_TYPE xTimerIsTimerActive( xTimerHandle xTimer ) PRIVILEGED_FUNCTION;

#define xTimerStart( xTimer, xBlockTime ) xTimerGenericCommand( xTimer, tmrCOMMAND_START, 0, NULL, xBlockTime )
#define xTimerStop( xTimer, xBlockTime ) xTimerGenericCommand( xTimer, tmrCOMMAND_STOP, 0, NULL, xBlockTime )
#define xTimerChangePeriod( xTimer, xNewPeriod, xBlockTime ) xTimerGenericCommand( xTimer, tmrCOMMAND_CHANGE_PERIOD, xNewPeriod, NULL, xBlockTime )
#define xTimerDelete( xTimer, xBlockTime ) xTimerGenericCommand( xTimer, tmrCOMMAND_DELETE, 0, NULL, xBlockTime )
#define xTimerReset( xTimer, xBlockTime ) xTimerGenericCommand( xTimer, tmrCOMMAND_START, 0, NULL, xBlockTime )

#define xTimerStartFromISR( xTimer, pxHigherPriorityTaskWoken ) xTimerGenericCommand( xTimer, tmrCOMMAND_START, 0, pxHigherPriorityTaskWoken, 0 )
#define xTimerStopFromISR( xTimer, pxHigherPriorityTaskWoken ) xTimerGenericCommand( xTimer, tmrCOMMAND_STOP, 0, pxHigherPriorityTaskWoken, 0 )
#define xTimerChangePeriodFromISR( xTimer, xNewPeriod, pxHigherPriorityTaskWoken ) xTimerGenericCommand( xTimer, tmrCOMMAND_CHANGE_PERIOD, xNewPeriod, pxHigherPriorityTaskWoken, 0 )
#define xTimerResetFromISR( xTimer, pxHigherPriorityTaskWoken ) xTimerGenericCommand( xTimer, tmrCOMMAND_START, 0, pxHigherPriorityTaskWoken, 0 )

#ifdef __cplusplus
}
#endif
#endif /* TIMERS_H */