51单片机交通灯仿真原理图如下(proteus仿真工程文件可到本帖附件中下载)
单片机源程序如下:
- #include<reg51.h>
- #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)
- {
- uchar i;
- while(x--) for(i=0;i<120;i++);
- }
- //交通灯切换
- void Traffic_Light()
- {
- switch(Operation_Type)
- {
- case 1: //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;
- case 2: //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;
- case 3: //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;
- case 4: //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;
- }
- }
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51单片机交通灯.zip
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