1、打开proteus仿真软件，绘制交通灯仿真电路图，如下：
2、打开Keil4编程软件，根据刚刚绘制的交通灯仿真电路图编写相应的程序，程序如下：
3、#include <reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit RED_A=P0^0;
sbit YELLOW_A=P0^1;
sbit GREEN_A=P0^2;
sbit RED_B=P0^3;
sbit YELLOW_B=P0^4;
sbit GREEN_B=P0^5;
uchar Flash_Count = 0;
Operation_Type = 1;
void DelayMS(uint x)
{
uchar t;
while(x--)
{
for(t=120;t>0;t--);
}
}
void Traffic_lignt()
{
switch(Operation_Type)
{
case 1:
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:
DelayMS(200);
YELLOW_A=~YELLOW_A;
if(++Flash_Count !=10)
return;
Flash_Count=0;
Operation_Type = 3;
break;
case 3:
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:
DelayMS(200);
YELLOW_B=~YELLOW_B;
if(++Flash_Count !=10)
return;
Flash_Count=0;
Operation_Type = 1;
break;
}
}
void main()
{
while(1)
{
Traffic_lignt();
}
}
4、将Keil4编写好的程序导入proteus仿真软件中，效果如下：
