精选单片机8255交通灯程序

1、单片机8255交通灯程序交通灯程序/* 十字路口交通灯控制 C 程序*/#include #defineucharunsigned char#defineuintunsigned int/*定义控制位*/sbit Time_Show_LED2=P25; /Time_Show_LED2(直行时间显示)控制位sbit Time_Show_LED1=P24; /Time_Show_LED1(直行时间显示)控制位sbit EW_LED2=P23; /EW_LED2控制位sbit EW_LED1=P22; /EW_LED1控制位sbit SN_LED2=P21; /SN_LED2控制位sbit SN_L

2、ED1=P20; /SN_LED1控制位sbit SN_Yellow=P16; /SN黄灯sbit EW_Yellow=P12; /EW黄灯sbit EW_ManGreen=P30; /EW人行道绿灯sbit SN_ManGreen=P31; /SN人行道绿灯sbit Special_LED=P26; /交通特殊指示灯sbit Busy_LED=P27; /交通繁忙指示灯sbit Nomor_Button=P35; /交通正常按键sbit Busy_Btton=P36; /交通繁忙按键sbit Special_Btton=P37; /交通特殊按键 sbit EW_ManRed=P33; /EW

3、人行道红灯sbit SN_ManRed=P34; /SN人行道红灯bit Flag_SN_Yellow; /SN黄灯标志位bit Flag_EW_Yellow; /EW黄灯标志位char Time_EW; /东西方向倒计时单元char Time_SN; /南北方向倒计时单元uchar EW=60,SN=40,EWL=19,SNL=19; /程序初始化赋值，正常模式uchar EW1=60,SN1=40,EWL1=19,SNL1=19; /用于存放修改值的变量uchar code table10=0 x3F,0 x06,0 x5B,0 x4F,0 x66,0 x6D,0 x7D,0 x07,0

4、x7F,0 x6F; /0-9段选码uchar code S8=0 x28,0 x48,0 x18,0 x48,0 x82,0 x84,0 x81,0 x84; /交通信号灯控制代码/*延时子程序*/void Delay(uchar a)uchari;i=a;while(i-);/*显示子函数*/void Display(void)uchar h,l;h=Time_EW/10;l=Time_EW%10; P0=tablel; EW_LED2=1; /点亮EW_LED2Delay(2);EW_LED2=0; /熄灭EW_LED2P0=tableh;EW_LED1=1; /点亮EW_LED1Del

5、ay(2);EW_LED1=0;h=Time_SN/10;l=Time_SN%10;P0=tablel;SN_LED2=1; /点亮SN_LED2Delay(2);SN_LED2=0;P0=tableh;SN_LED1=1; /点亮SN_LED1Delay(2);SN_LED1=0;h= EW1/10;l= EW1%10;P0=tablel;Time_Show_LED1=1; /点亮Time_Show_LED1Delay(2); Time_Show_LED1=0;P0=tableh;Time_Show_LED2=1;/点亮Time_Show_LED2Delay(2);Time_Show_LED

6、2=0; /*外部0中断效劳程序*/void INT0_srv(void)interrupt 0 using 1 EX0=0; /关中断 if(Nomor_Button=0) /测试按键是否按下，按下为正常状态 EW1=60;SN1=40;EWL1=19;SNL1=19;Busy_LED=0; /关繁忙信号灯Special_LED =0; /关特殊信号灯 if(Busy_Btton=0) /测试按键是否按下，按下为繁忙状态 EW1=45;SN1=30;EWL1=14;SNL1=14;Special_LED=0; /关特殊信号灯Busy_LED=1; /开繁忙信号灯 if(Special_Btt

7、on=0)/测试按键是否按下，按下为特殊状态 EW1=75;SN1=55;EWL1=19;SNL1=19;Busy_LED=0; /关繁忙信号灯Special_LED =1;/开特殊信号灯 EX0=1; /开中断/*T0中断效劳程序*/void timer0(void)interrupt 1 using 1static uchar count;TH0=(65536-50000)/256;TL0=(65536-50000)%256;count+;if(count=10) if(Flag_SN_Yellow=1) /测试南北黄灯标志位 SN_Yellow=SN_Yellow; if(Flag_EW

8、_Yellow=1) /测试东西黄灯标志位 EW_Yellow=EW_Yellow; if(count=20) Time_EW-; Time_SN-; if(Flag_SN_Yellow=1) /测试南北黄灯标志位 SN_Yellow=SN_Yellow; if(Flag_EW_Yellow=1) /测试东西黄灯标志位 EW_Yellow=EW_Yellow; count=0;/*主程序开始*/voidmain(void) Busy_LED=0;Special_LED=0;IT0=1; /INT0负跳变触发TMOD=0 x01; /定时器工作于方式1TH0=(65536-50000)/256;

9、 /定时器赋初值TL0=(65536-50000)%256;EA=1; /CPU开中断总允许ET0=1; /开定时中断EX0=1; /开外部INTO中断TR0=1; /启动定时 while(1) /*S0状态*/SN_ManRed=0;SN_ManGreen=1; /SN人行道通行EW_ManRed=1;/EW人行道禁止EW_ManGreen=0;Flag_EW_Yellow=0; /EW关黄灯显示信号Time_EW=EW;Time_SN=SN;while(Time_SN=5) P1=S0;/SN绿灯，EW红灯 Display();/*S1状态*/P1=0 x00;while(Time_SN=

10、0)Flag_SN_Yellow=1; /SN开黄灯信号位P1=P1|0 x08; /保持EW红灯Display();/*S2状态*/SN_ManRed=1; /SN人行道禁止SN_ManGreen=0;EW_ManRed=1; /EW人行道禁止EW_ManGreen=0;Flag_SN_Yellow=0; /SN关黄灯显示信号Time_SN=SNL;while(Time_SN=5)P1=S2; /SN左拐绿灯亮，EW红灯Display();/*S3状态*/P1=0 x00;while(Time_SN=0)Flag_SN_Yellow=1;/SN开黄灯信号位P1=P1|0 x08; /保持EW

11、红灯Display();/*赋值*/EW=EW1;SN=SN1;EWL=EWL1;SNL=SNL1;/*S4状态*/SN_ManRed=1; /SN人行道禁止SN_ManGreen=0;EW_ManRed=0;EW_ManGreen=1; /EW人行道通行Flag_SN_Yellow=0; /SN关黄灯显示信号Time_EW=SN;Time_SN=EW;while(Time_EW=5) P1=S4; /EW通行，SN红灯Display();/*S5状态*/P1=0X00;while(Time_EW=0)Flag_EW_Yellow=1;/EW开黄灯信号位P1=P1|0 x80; /保持SN红灯Display();/*S6状态*/SN_ManRed=1; /SN人行道禁止SN_ManGreen=0;EW_ManRed=1; /EW人行道禁止EW_ManGreen=0;Flag_EW_Yellow=0;/EW关黄灯显示信号Time_