diode.c.bak

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/***************************************************************
功能:实现多只LED依次点亮实现跑马灯效果
作者:SG
时间:2004-03-15
版本:V1.0
***************************************************************/

sbit _Led1 = 0xa0;				//对应CPU管脚P2.0
sbit _Led2 = 0xa1;				//对应CPU管脚P2.1
sbit _Led3 = 0xa2;				//对应CPU管脚P2.2
sbit _Led4 = 0xa3;				//对应CPU管脚P2.3
sbit _Led5 = 0xa4;				//对应CPU管脚P2.4
sbit _Led6 = 0xa5;				//对应CPU管脚P2.5
sbit _Led7 = 0xa6;				//对应CPU管脚P2.6
sbit _Led8 = 0xa7;				//对应CPU管脚P2.7
/*-------------------------------------------------
功能:1MS延时子程序
-------------------------------------------------*/
void Delay_xMs(unsigned int x)
{
    unsigned int i,j;
    for( i =0;i < x;i++ )
    {
        for( j =0;j<500;j++ );
    }
}

/*-------------------------------------------
主程序
功能:LED1--LED4发光二极管依次点亮实现跑马灯效果
--------------------------------------------*/
void main()
{
   	while(1)
   	{
   	   	_Led2 = 0;				//点亮LED1,熄灭LED2,LED3,LED4
   	   	_Led1 = 1;
   	   	_Led3 = 1;
   	   	_Led4 = 1;
   	   	Delay_xMs(60);	
   	   	_Led2 = 0;				//点亮LED2,熄灭LED1,LED3,LED4
   	   	_Led1 = 0;
   	   	_Led3 = 1;
   	   	_Led4 = 1;
   	   	Delay_xMs(60);
   	   	_Led1 = 0;				//点亮LED3,熄灭LED2,LED1,LED4
   	   	_Led2 = 0;
   	   	_Led3 = 0;
   	   	_Led4 = 1;
   	   	Delay_xMs(60);
   	   	_Led1 = 0;				//点亮LED4,熄灭LED2,LED3,LED1
   	   	_Led2 = 0;
   	   	_Led3 = 0;
   	   	_Led4 = 0;
   	   	Delay_xMs(60);
   	   	_Led2 = 1;				//,熄灭LED2,LED3,LED4,Led1
   	   	_Led1 = 1;
   	   	_Led3 = 1;
   	   	_Led4 = 1;
		Delay_xMs(120);			//延时一段时间
   	}
}