led.bak

AT917S64,ARM处理器的程序。点灯的应用。

/************************************************************/
/*		Test Code for S64-DEK REV2.0						*/
/*				By Team Mcuzone								*/
/*					2005-11									*/
/************************************************************/

/************************************************************/
/*			Code for LED Operation							*/
/*				By Team Mcuzone								*/
/*					2005-11									*/
/*	Function Description:									*/
/*		ledrun():	三个LED以2进制方式显示0-7				*/
/*		ledon(unsigned char no):	点亮第(no)LED			*/
/*		ledoff(unsigned char no):	熄灭第(no)LED			*/
/*		ledallon():		点亮全部LED							*/
/*		ledalloff():	熄灭全部LED							*/
/*															*/
/*	Revision:												*/
/*		REV1.0,First editon									*/
/************************************************************/


//	Define function
/*
ledrun();
ledon(unsigned char no);		
ledoff(unsigned char no);
ledallon();							
ledalloff();					
*/


#include <AT91SAM7S64.h>

void delay(unsigned long int i)
{
	for(;i>0;i--)
	;
}

//	Init LED I/O
void ledinit(void)
{
	*AT91C_PMC_PCER|=0x0000000F;		//PMC外设时钟使能
	*AT91C_PIOA_PER|=0x0000000F;	  	//PIOA0-2作为I/O使用
	*AT91C_PIOA_OER|=0x0000000F;	   	//PIOA0-2输出使能
}


//	LED RUN 
void ledrun(void)
{
	unsigned char i;
	ledinit();
	for(i=0;i<16;i++) 			//3个LED灯以2进制方式显示0-7
	{
		*AT91C_PIOA_CODR|=i;
		delay(3000000);
		*AT91C_PIOA_SODR|=i;
		delay(3000000);
   	}

}

//	LED OFF
void ledoff(unsigned char no)
{
	ledinit();
	if(no==1)
		*AT91C_PIOA_SODR|=0x00000001;
	if(no==2)
		*AT91C_PIOA_SODR|=0x00000002;
	if(no==3)
		*AT91C_PIOA_SODR|=0x00000004;
    if(no==4)
		*AT91C_PIOA_SODR|=0x00000008; 

}



//	LED ON
void ledon(unsigned char no)
{
	ledinit();
	if(no==1)
		*AT91C_PIOA_CODR|=0x00000001;
	if(no==2)
		*AT91C_PIOA_CODR|=0x00000002;
	if(no==3)
		*AT91C_PIOA_CODR|=0x00000004;
    if(no==4)
		*AT91C_PIOA_CODR|=0x00000008;

}



//	LED All Off
void ledalloff(void)
{
	ledinit();
	*AT91C_PIOA_SODR|=0x0000000F;
}


//	LED All On
void ledallon(void)
{
	ledinit();
	*AT91C_PIOA_CODR|=0x0000000F;
}