timer0.h

MST720-DEMO程序

/******************************************************************************
 Copyright (c) 2005 MStar Semiconductor, Inc.
 All rights reserved.

 [Module Name]: Timer0.h
 [Date]:	13-Jan-2005
 [Comment]:
   Header file for Timer 0 ISR module.
 [Reversion History]:
*******************************************************************************/

#ifndef _TIMER0_H_
#define _TIMER0_H_

#include "Project.h"

#ifdef _TIMER0_C_
#define _TIMER0DEC_
#else
#define _TIMER0DEC_	extern
#endif

/********************
* LOCAL MACROS	    *
*********************/
#define NUM_OF_1ms_CYCLE	((MCU_XTAL_CLK_KHZ+(MCU_MACHINE_CYCLE/2))/MCU_MACHINE_CYCLE) 
#define NUM_OF_RELOAD_CYCLE	7	    // Check from itimer.lst Assembly Code
#define CYCLES			0x010000 - (NUM_OF_1ms_CYCLE - NUM_OF_RELOAD_CYCLE)
#define TH_RELOAD_VALUE	(CYCLES & 0xFF00) / 0x100
#define TL_RELOAD_VALUE	CYCLES%0x100

#define NUM_OF_TIMERS		4
#define TIMER_ZERO_VALUE	0
#define TIMER_INVALID_VALUE	0xFFFF
#define TIMER_REGISTER_FAIL	0xFF
#define TIMER_RUNNING		0
#define TIMER_EXPIRED		1

/********************
* STATIC DATA	    *
*********************/
_TIMER0DEC_ WORD IDATA  timer_data[NUM_OF_TIMERS];

/**********************
* FUNCTION PROTOTYPES *
***********************/
_TIMER0DEC_ void sysTimer0Init (void);
_TIMER0DEC_ BYTE sysTimer0Register (void);
_TIMER0DEC_ void sysTimer0Set (BYTE handle_pointer,WORD time);
_TIMER0DEC_ BYTE sysTimer0Expired (BYTE handle_pointer);

#endif	//_TIMER0_H_