testboard.bak

这是一个基于nec78f8024的led驱动程序

/*
*******************************************************************************
**  COPYRIGHT (C) NEC Electronics Corporation 2008
**  NEC ELECTRONICS CONFIDENTIAL AND PROPRIETARY
**  All rights reserved by NEC Electronics Corporation.
**  Use of copyright notice does not evidence publication.
**
**  Filename :	BOARD.c
**  Abstract :	This file implements device driver for HCD-Board.
**
**  Device :	uPD78F8024
**
**  Compiler :	NEC/CC78K0
**
*******************************************************************************
*/
#pragma interrupt	INTP1	shutdown_interrupt
/*
*******************************************************************************
**  Include files
*******************************************************************************
*/
#include "macrodriver.h"
#include "BOARD.h"
#include "LED.h"

/*
*******************************************************************************
**  Function Prototypes
*******************************************************************************
*/
__interrupt void  shutdown_interrupt( void );

/*
*******************************************************************************
**  External Variable Difinition
*******************************************************************************
*/
unsigned char g_ucBoardStatus = BOARD_STATUS_SHUTDOWN;	/* to store the status of board */

/*
**-----------------------------------------------------------------------------
**
**  function name:
**  	BOARD_init
**
**  Parameters:
**  	void
**
**  Returns:
**  	void
**
**-----------------------------------------------------------------------------
*/
void BOARD_init( void )
{
	/* wait at the PWM standby time */
	TCL50 = 0b00000101;
	CR50  = 63;
	TMC50 = 0b10000000;
	while(!TMIF50);
	TMC50 = 0b00000000;
	TCL50 = 0b00000000;
	TMIF50 = BIT_CLR;
	
	/* set output to each PWM port mode */
	PORT_MODE_PWM1 = OUTPUT;
	PORT_MODE_PWM2 = OUTPUT;
	PORT_MODE_PWM3 = OUTPUT;
	PORT_MODE_PWM4 = OUTPUT;

	/* output High Level to each PWM port */
	PORT_PWM1 = LEVEL_HIGH;
	PORT_PWM2 = LEVEL_HIGH;
	PORT_PWM3 = LEVEL_HIGH;
	PORT_PWM4 = LEVEL_HIGH;

	/* output Low Level to each PWM port */
	PORT_PWM1 = LEVEL_LOW;
	PORT_PWM2 = LEVEL_LOW;
	PORT_PWM3 = LEVEL_LOW;
	PORT_PWM4 = LEVEL_LOW;
}

/*
**-----------------------------------------------------------------------------
**
**  function name:
**  	shutdown_interrupt
**
**  Parameters:
**  	void
**
**  Returns:
**  	void
**
**-----------------------------------------------------------------------------
*/ 
__interrupt void  shutdown_interrupt( void ) {
	/* set SHUTDOWN to status of board  */
	g_ucBoardStatus = BOARD_STATUS_SHUTDOWN;
}

/*
**-----------------------------------------------------------------------------
**
**  function name:
**  	changeBoardStatus
**
**  Parameters:
**  	unsigned char    status of board after changed
**
**  Returns:
**  	void
**
**-----------------------------------------------------------------------------
*/
void changeBoardStatus(unsigned char  ucStatus) {

	/* when there is no necessity of the state transition */
	if (ucStatus == g_ucBoardStatus) {
		/* end without processing */
		return;
	}
	
	/* when changing to ENABLE */
	if (ucStatus == BOARD_STATUS_ENABLE) {
		/* set High to operation/standby control input port */
		PORT_BOARD_ENABLE = LEVEL_HIGH;
	}
	/* when changing to SHUTDOWN */
	else if (ucStatus == BOARD_STATUS_SHUTDOWN) {
		/* set Low to operation/standby control input port */
		PORT_BOARD_ENABLE = LEVEL_LOW;
	}
	else {
		/* end without processing */
		return;
	}
	
	/* reset status of board */
	g_ucBoardStatus = ucStatus;
}