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led模拟交通灯 新手福利c语言程序代码
#include<reg51.h>
#define uchar unsigned char
#define uint unsigned int
sbit RED_A=P1^0; //东西向灯
sbit YELLOW_A=P1^1;
sbit GREEN_A=P1^2;
sbit RED_B=P1^3; //南北向灯
sbit YELLOW_B=P1^4;
sbit GREEN_B=P1^5;
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=0;GREEN_A=0;
RED_B=0;YELLOW_B=0;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;
YELLOW_B=~YELLOW_B;
GREEN_A=0;
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=0;GREEN_A=1;
RED_B=1;YELLOW_B=0;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;
YELLOW_A=~YELLOW_A;
GREEN_B=0;
if(++Flash_Count!=10)
return;
Flash_Count=0;
Operation_Type=1;
}
}
//主程序
void main()
{
while(1)Traffic_Light();
}
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