单片机实验利用定时器控制八个LED灯每隔1S每四个为一组轮流点亮

03  8只LED左右来回点亮

/*    名称：8只LED左右来回点亮

       说明：程序利用循环移位函数_crol_和_cror_形成来回滚动的效果

*/

#include

#include

#define uchar unsigned char

#define uint unsigned int

//延时

void DelayMS(uint x)

{

       uchari;

       while(x--)

       {

              for(i=0;i<120;i++);

       }

}

//主程序

void main()

{

       uchari;

       P2=0x01;

       while(1)

       {

              for(i=0;i<7;i++)

              {

                     P2=_crol_(P2,1);//P2的值向左循环移动

                     DelayMS(150);

              }

              for(i=0;i<7;i++)

              {

                     P2=_cror_(P2,1);//P2的值向右循环移动

                     DelayMS(150);

              }

       }

}

04  花样流水灯

/*    名称：花样流水灯

       说明：16只LED分两组按预设的多种花样变换显示

*/

#include

#define uchar unsigned char

#define uint unsigned int

uchar code Pattern_P0[]=

{

 0xfc,0xf9,0xf3,0xe7,0xcf,0x9f,0x3f,0x7f,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,

 0xe7,0xdb,0xbd,0x7e,0xbd,0xdb,0xe7,0xff,0xe7,0xc3,0x81,0x00,0x81,0xc3,0xe7,0xff,

 0xaa,0x55,0x18,0xff,0xf0,0x0f,0x00,0xff,0xf8,0xf1,0xe3,0xc7,0x8f,0x1f,0x3f,0x7f,

 0x7f,0x3f,0x1f,0x8f,0xc7,0xe3,0xf1,0xf8,0xff,0x00,0x00,0xff,0xff,0x0f,0xf0,0xff,

 0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,

 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfd,0xfe,

 0xfe,0xfc,0xf8,0xf0,0xe0,0xc0,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0xc0,0xe0,0xf0,0xf8,0xfc,0xfe,

 0x00,0xff,0x00,0xff,0x00,0xff,0x00,0xff

};

uchar code Pattern_P2[]=

{

 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xfe,0xfc,0xf9,0xf3,0xe7,0xcf,0x9f,0x3f,0xff,

 0xe7,0xdb,0xbd,0x7e,0xbd,0xdb,0xe7,0xff,0xe7,0xc3,0x81,0x00,0x81,0xc3,0xe7,0xff,

 0xaa,0x55,0x18,0xff,0xf0,0x0f,0x00,0xff,0xf8,0xf1,0xe3,0xc7,0x8f,0x1f,0x3f,0x7f,

 0x7f,0x3f,0x1f,0x8f,0xc7,0xe3,0xf1,0xf8,0xff,0x00,0x00,0xff,0xff,0x0f,0xf0,0xff,

 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f,

 0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfd,0xfe,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,

 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xfe,0xfc,0xf8,0xf0,0xe0,0xc0,0x80,0x00,

 0x00,0x80,0xc0,0xe0,0xf0,0xf8,0xfc,0xfe,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,

 0x00,0xff,0x00,0xff,0x00,0xff,0x00,0xff

};

//延时

void DelayMS(uint x)

{

       uchari;

       while(x--)

       {

              for(i=0;i<120;i++);

       }

}

//主程序

void main()

{

       uchari;

       while(1)

       {     //从数组中读取数据送至P0和P2口显示

              for(i=0;i<136;i++)

              {

                     P0=Pattern_P0[i];

                     P2=Pattern_P2[i];

                     DelayMS(100);

              }

       }

}

05  LED模拟交通灯

/*    名称：LED模拟交通灯

       说明：东西向绿灯亮若干秒，黄灯闪烁5次后红灯亮， 红灯亮后，南北向由红灯变为绿灯，若干秒后南北向黄灯闪烁5此后变红灯，东西向变绿灯，如此重复。

*/

#include

#define uchar unsigned char

#define uint unsigned int

sbit RED_A=P0^0;    //东西向灯

sbit YELLOW_A=P0^1;

sbit GREEN_A=P0^2;

sbit RED_B=P0^3;    //南北向灯

sbit YELLOW_B=P0^4;

sbit GREEN_B=P0^5;

uchar Flash_Count=0,Operation_Type=1; //闪烁次数，操作类型变量

//延时

void DelayMS(uint x)

{

       uchari;

       while(x--)for(i=0;i<120;i++);

}

//交通灯切换

void Traffic_Light()

{

       switch(Operation_Type)

       {

              case1:     //东西向绿灯与南北向红灯亮

                            RED_A=1;YELLOW_A=1;GREEN_A=0;

                            RED_B=0;YELLOW_B=1;GREEN_B=1;

                            DelayMS(2000);

                            Operation_Type=2;

                            break;

              case2:     //东西向黄灯闪烁，绿灯关闭

                            DelayMS(300);

                            YELLOW_A=~YELLOW_A;GREEN_A=1;

                            if(++Flash_Count!=10)return; //闪烁5次

                            Flash_Count=0;

                            Operation_Type=3;

                            break;

              case3:     //东西向红灯，南北向绿灯亮

                            RED_A=0;YELLOW_A=1;GREEN_A=1;

                            RED_B=1;YELLOW_B=1;GREEN_B=0;

                            DelayMS(2000);

                            Operation_Type=4;

                            break;

              case4:     //南北向黄灯闪烁5次

                            DelayMS(300);

                            YELLOW_B=~YELLOW_B;GREEN_B=1;

                            if(++Flash_Count!=10)return;

                            Flash_Count=0;

                            Operation_Type=1;

       }

}

//主程序

void main()

{

       while(1)Traffic_Light();

}

06  单只数码管循环显示0~9

/*    名称：单只数码管循环显示0~9

       说明：主程序中的循环语句反复将0~9的段码送至P0口，使数字0~9循环显示

*/

#include

#include

#define uchar unsigned char

#define uint unsigned int

uchar codeDSY_CODE[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff};

//延时

void DelayMS(uint x)

{

       uchart;

       while(x--)for(t=0;t<120;t++);

}

//主程序

void main()

{

       uchari=0;

       P0=0x00;

       while(1)

       {/* for(;i<11;i++){ P0=~DSY_CODE[i]; DelayMS(300);}  //注:另一方案 */

              P0=~DSY_CODE[i];

              i=(i+1)%10;

              DelayMS(300);

       }

}

;给你做一个单双各四个灯轮流点亮的程序吧，P0口
#include
#define uchar unsigned char
uchar num=0;
void t0isr() interrupt 1
{
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
num++;
if(num>=20)
{
P0=~P0;
num=0;
}
}
main()
{
TMOD=0x01;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
TR0=1;
EA=1;
P0=0x5a;
while(1);
}

89C52各位，请帮忙...

单片机的种类型号五花八门，单片机的定时器模型又五花八门，你的电路是LED高电平点亮还是低电平点亮又没说，所以。。答案=无解， 不知道你要问什么。