timer.c

nec 78K0 样例对程序初始化电表样

/*
*******************************************************************************
**
**  This device driver was created by Applilet for the 78K0/KB2, 78K0/KC2,
**  78K0/KD2, 78K0/KE2 and 78K0/KF2 8-Bit Single-Chip Microcontrollers.
**
**  Copyright(C) NEC Electronics Corporation 2002 - 2005
**  All rights reserved by NEC Electronics Corporation.
**
**  This program should be used on your own responsibility.
**  NEC Electronics Corporation assumes no responsibility for any losses
**  incurred by customers or third parties arising from the use of this file.
**
**  Filename : timer.c
**  Abstract : This file implements a device driver for the timer module
**  APIlib:  NEC78K0KX2.lib V1.01 [09 Aug. 2005]
**
**  Device :	uPD78F0513(44-pin)
**
**  Compiler:  NEC/CC78K0
**
*******************************************************************************
*/

/*
*******************************************************************************
**  Include files
*******************************************************************************
*/
#include "macrodriver.h"
#include "timer.h"


/*
*******************************************************************************
**  MacroDefine
*******************************************************************************
*/
/*TM00 pulse width measure*/
extern ULONG tm00_pos_width;
extern ULONG tm00_neg_width;

/*TM01 pulse width measure*/

/*
**-----------------------------------------------------------------------------
**
**  Abstract:
**	This function initializes TM00_module.
**
**  Parameters:
**	None
**   
**  Returns:
**	None
**
**-----------------------------------------------------------------------------
*/
void TM00_Init( )
{
	TMC00=0x00;
	                 			/* internal count clock */
	PRM00 |= TM_TM00_CLOCK;
	/* TM00 pulse measurement funciton */
	SetIORBit(PM0,0x1);			/* TI000(P00) input */
	ClrIORBit(ISC,0x1);
	SetIORBit(PRM00, 0x10);			/* specifies raising edge of TI000 */
	CRC00 = 0x07;				/* CR001 and CR000 used as capture register */
	ClrIORBit(IF0H,0x80);
}
/*
**-----------------------------------------------------------------------------
**
**  Abstract:
**	This function starts the TM00 counter. 
**
**  Parameters:
**	None
**
**  Returns:
**	None
**
**-----------------------------------------------------------------------------
*/
void TM00_Start()
{
	ClrIORBit(MK0H,0x80);
	TMC00 = 0x4;				/* pulse width measure start */
}
		
/*
**-----------------------------------------------------------------------------
**
**  Abstract:
**	This function stops the TM00 counter and clear the count register.
**
**  Parameters:
**	None
**
**  Returns:
**	None
**
**-----------------------------------------------------------------------------
*/
void TM00_Stop()
{
	TMC00=0x0;
	SetIORBit(MK0H,0x80);
}

/*
**-----------------------------------------------------------------------------
**
**  Abstract:
**	This function is TM00 pulse width calculation.
**	
**  Parameters:
**	ULONG *activerwidth :		activewidth clock number
**	ULONG *inactivewidth :		inactivewidth clock nubmer
**	enum TMChannel channel :	channel to get pulse width
**
**  Returns:
**	MD_ARGERROR
**	MD_OK
**
**-----------------------------------------------------------------------------
*/
MD_STATUS TM00_GetPulseWidth(ULONG *activewidth, ULONG *inactivewidth,enum TMChannel channel)
{
	if(channel == TMChannel0){
		*inactivewidth = tm00_neg_width;
		*activewidth = tm00_pos_width;
	}
	else{
		return	MD_ARGERROR;
	}
	return	MD_OK;
}

/*
**-----------------------------------------------------------------------------
**
**  Abstract:
**	This function can initialize TM50_module.
**
**  Parameters:
**	None
**
**  Returns:
**	None
**
**-----------------------------------------------------------------------------
*/
void TM50_Init( void )
{
	ClrIORBit(TMC50, 0x80);
	TCL50 = TM_TM50_CLOCK;			/* internal countclock */
	/* TM50 PWM output */
	ClrIORBit(P1, 0x80);
	ClrIORBit(PM1, 0x80);			/* TO50 output */
	SetIORBit(TMC50, 0x1);
	SetIORBit(TMC50, 0x40);
	 	/* init high */
	SetIORBit(TMC50, 0x8);
	SetIORBit(TMC50, 0x2);			/* active low */
	CR50 = TM_TM50_PWMACTIVEVALUE;
}

/*
**-----------------------------------------------------------------------------
**
**  Abstract:
**	This function can start the TM50 counter.
**
**  Parameters:
**	None
**
**  Returns:
**	None
**
**-----------------------------------------------------------------------------
*/
void TM50_Start( void )
{
	/* TM50 PWM output */
	ClrIORBit(TMC50, 0x4);
	SetIORBit(TMC50, 0x8);
	SetIORBit(TMC50, 0x80);
}

/*
**-----------------------------------------------------------------------------
**
**  Abstract:
**	This function can stop the TM50 counter and clear the count register.
**
**  Parameters:
**	None
**
**  Returns:
**	None
**
**-----------------------------------------------------------------------------
*/
void TM50_Stop( void )
{
	ClrIORBit(TMC50, 0x80);
}
		
/*
**-----------------------------------------------------------------------------
**
**  Abstract:
**	This function can change TM50 condition.
**	
**  Parameters:
**	UCHAR :	  value
**  Returns:
**	MD_OK
**	MD_ERROR
**
**-----------------------------------------------------------------------------
*/
MD_STATUS TM50_ChangeTimerCondition(UCHAR value)
{
   	CR50 =value;
	return MD_OK;
}