51单片机交通灯系统设计(流程框图+硬件+源码) -

#include<reg52.h>
#define uint unsigned int;
#define uchar unsigned char;
void DigitalTube(); //数码管显示函数
void InterruptT0(); //内部中断0
sbit P10 = P1^0; //红绿灯引脚的初始化
sbit P11 = P1^1;
sbit P12 = P1^2;
sbit P13 = P1^3;
sbit P14 = P1^4;
sbit P15 = P1^5;
sbit P16 = P1^6; //数码管使能控制
sbit P17 = P1^7;
sbit P20 = P2^0;
sbit P21 = P2^1;
sbit K22 = P2^2; //按键22
sbit K23 = P2^3;
sbit K24 = P2^4;
sbit dula = P2^5;
uint LedBuf[10] = {
0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,
0x80,0x90
}; //0~9的数字显示共阳
uint Kflag = 1; //按键24的标志
uint LedNumNS = 27; //南北的数字显示
uint LedNumEW = 30; //东西的数字显示
uint i = 0;
uint j = 0;
uint j1 = 0;
uint k = 0;
uint g = 0;
uint z = 0; //计数及状态的变量
uint LedTime1 = 30;
uint LedTime2 = 27;
uint LedTime3 = 30;
uint LedTime4 = 27;
uint Kf22 = 1; //按键前一个状态的值
uint Kf23 = 1;
uint Kf24 = 1;
uint KSta24 = 1; //按键的当前值
uint KSta23 = 1;
uint KSta22 = 1;
uchar Kflag22 = 0; //按键22的switch函数参数
void main()
{
EA = 1; //开总中断
ET0 = 1; //开内部中断0
TR0 = 1;
TMOD = 0x01; //方式1
TH0 = 0xFC;
TL0= 0x67; //1ms中断
P1 = 0xEE; //
while(1)
{
DigitalTube(); //数码管显示
}
}
void InterruptT0() interrupt 1
{
TH0 = 0xFC;
TL0 = 0x67; //1ms中断
i++;
k++;
KSta24 = K24; //按键K24 夜间模式
if(Kf24 != KSta24) //按键有动作
{
if(Kf24 == 1) //按键按下
{
Kflag = !Kflag;
}
Kf24 = KSta24;
}
KSta23 = K23; //按键K23 增减时长
if(Kf23 != KSta23) //按键有动作
{
if(Kf23 == 1) //按键按下
{
// LedTime = LedTime +2;
LedTime1 = LedTime1 +5; //32 34 36 38 30
LedTime2 = LedTime2 +5; //25 23 21 19 17
LedTime3 = LedTime3 +5;
LedTime4 = LedTime4 +5;
if(LedTime1 >=60)
{
LedTime1 = 10;
LedTime2 = 7;
LedTime3 = 10;
LedTime4 = 7;
}
LedNumEW = LedTime1;
LedNumNS = LedTime2;
}
Kf23= KSta23;
}
KSta22 = K22; //按键K22 某方向长时间红灯
if(Kf22 != KSta22) //按键有动作
{
if(Kf22 == 1) //按键按下
{
Kflag22 ++;
if(Kflag22>= 3)
{
Kflag22 = 0;
}
switch(Kflag22)
{
case 1:
LedTime1 = 50;
LedTime2 = 47; //case2
LedTime3 = 20;
LedTime4 = 17; //case1
LedNumEW = LedTime1;
LedNumNS = LedTime2;
break;
case 2:
LedTime1 = 20;
LedTime2 = 17; //case2
LedTime3 = 50;
LedTime4 = 47; //case1
LedNumEW = LedTime1;
LedNumNS = LedTime2;
break;
case 0:
LedTime1 = 30;
LedTime2 = 27;
LedTime3 = 30;
LedTime4 = 27;
LedNumEW = LedTime1;
LedNumNS = LedTime2;
break;
}
}
Kf22 = KSta22;
}
if(j >= 200)
{
j = 0;
j1++;
}
if(i >= 1000)
{
i = 0;
LedNumNS--; //27
LedNumEW--; //30
switch(g)
{ //刚开始东西红南北绿
case 0: //********2
if(LedNumEW == 3) //*****3
{
P14 = ! P14; //绿灯灭
if(Kf24 == Kflag) P15 = ! P15; //黄灯亮
LedNumNS = 3;
}
if(LedNumEW == 0)
{
LedNumNS = LedTime3; // 30东西绿南北红的时间
LedNumEW = LedTime4; // 27
P12 = ! P12; //东西绿灯亮
P10 = ! P10; //东西红灯灭
P13 = ! P13; //nanbei红灯亮
if(Kf24 == Kflag)
P15 = ! P15; //南北黄灯灭
g = 1;
}
break;
case 1: //******4
if(LedNumNS == 3) //黄灯亮
{
P12 = !P12;
P11 = !P11;
LedNumEW = 3;
}
if(LedNumNS == 0) //********5
{
LedNumEW = LedTime1;//重新赋值
LedNumNS = LedTime2;
if(Kf24 == Kflag) P11 = !P11; //南北黄灯灭
P10 = !P10; //dongxi红灯亮
P14 = !P14;
P13 = !P13;
g = 0;
}
break;
}
if(Kf24 != Kflag) //夜间模式
{
if(j1 % 2 == 0)
{
P11 = ! P11;
P15 = ! P15;
} //所有方向黄灯闪烁
}
}
}
void DigitalTube() //数码管
{
switch(z)
{
case 0: //第一个数码管显示数字
P0 =0xFF; //防止数字显示混乱
dula = 1;
P0 = LedBuf[LedNumEW / 10]; //十位
P20 = 0;
P17 = 0;
P21 = 0;
P16 = 1;
dula = 0;
z++;
break;
case 1: //第二个数码管亮
P0 =0xFF;
dula = 1;
P0 = LedBuf[LedNumEW % 10]; //个位
P16 = 0;
P20 = 0;
P21 = 0;
P17 = 1;
dula = 0;
z++;
break;
case 2: //第三个数码管亮
P0 =0xFF;
dula = 1;
P0 = LedBuf[LedNumNS / 10]; //十位
P21 = 0;
P16 = 0;
P17 = 0; //关闭2
P20 = 1; //使能第3个数码管
dula = 0;
z++; //进入3
break;
case 3: //第四个数码管亮
P0 =0xFF;
dula = 1;
P0 = LedBuf[LedNumNS % 10]; //个位
P20 = 0; //第三个关闭
P16 = 0;
P17 = 0;
P21 = 1; //使能第四个数码管
dula = 0;
z = 0; //进入0
break;
default:break;
}
}

复制代码