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**************************************************************************************************/

/**************************************************************************************************
  Filename:       osal_cbtimer.h
  Revised:         
  Revision:        

  Description:    This file contains the Callback Timer definitions.


 **************************************************************************************************/

#ifndef OSAL_CBTIMER_H
#define OSAL_CBTIMER_H

#ifdef __cplusplus
extern "C"
{
#endif

/*********************************************************************
 * INCLUDES
 */

/*********************************************************************
 * CONSTANTS
 */
// Invalid timer id
#define INVALID_TIMER_ID                           0xFF

// Timed out timer
#define TIMEOUT_TIMER_ID                           0xFE

/*********************************************************************
 * VARIABLES
 */

/*********************************************************************
 * MACROS
 */
#define  OSAL_CBTIMER_NUM_TASKS 1                 // set by HZF, align to  project setting
#if ( OSAL_CBTIMER_NUM_TASKS == 0 )
  #error Callback Timer module shouldn't be included (no callback timer is needed)!
#elif ( OSAL_CBTIMER_NUM_TASKS == 1 )
  #define OSAL_CBTIMER_PROCESS_EVENT( a )          ( a )
#elif ( OSAL_CBTIMER_NUM_TASKS == 2 )
  #define OSAL_CBTIMER_PROCESS_EVENT( a )          ( a ), ( a )
#else
  #error Maximum of 2 callback timer tasks are supported! Modify it here.
#endif

/*********************************************************************
 * TYPEDEFS
 */

// Callback Timer function prototype. Callback function will be called
// when the associated timer expires.
//
// pData - pointer to data registered with timer
//
typedef void (*pfnCbTimer_t)( uint8 *pData );

/*********************************************************************
 * VARIABLES
 */

/*********************************************************************
 * FUNCTIONS
 */
  
/*
 * Callback Timer task initialization function.
 */
extern void osal_CbTimerInit( uint8 taskId );

/*
 * Callback Timer task event processing function.
 */
extern uint16 osal_CbTimerProcessEvent( uint8 taskId, uint16 events );

/*
 * Function to start a timer to expire in n mSecs.
 */
extern Status_t osal_CbTimerStart( pfnCbTimer_t pfnCbTimer, uint8 *pData, 
                                   uint16 timeout, uint8 *pTimerId );

/*
 * Function to update a timer that has already been started.
 */
extern Status_t osal_CbTimerUpdate( uint8 timerId, uint16 timeout );

/*
 * Function to stop a timer that has already been started.
 */
extern Status_t osal_CbTimerStop( uint8 timerId );
  
/*********************************************************************
*********************************************************************/

#ifdef __cplusplus
}
#endif

#endif /* OSAL_CBTIMER_H */