航灯单片机

Ⅰ 交通灯的单片机设计

哥们啊你是不是做毕业设计啊，那还不自己好好做啊，这个作出来很有用啊，这个既不需要扩展口，真的很简单啊，好好做吧，给你个图看看吧，基本上就是这个电路就行了啊

程序也很简单，用定时器就好了啊，中断也用的到，加油啦，支持你，Myfriends！！！（这个图中用了8个LED，做交通灯再加上4个就行了，口也够）

Ⅱ 单片机交通灯c程序 只有红绿灯 和数码显示

参考《51单片机C语言创新教程》温子祺等着。

源码转自：《51单片机C语言创新教程》。

/*实验名称:交通灯实验

*描述:交通灯实验要求红灯亮15秒，绿灯亮10秒，黄灯亮5秒，

当红灯切换为绿灯或者绿灯切换为红灯，

要实现灯闪烁。红灯、绿灯、黄灯的点亮持续时间可以通过串口来修改，

并在下一个循环中更新数值。

*作者:温子祺

*修改日期:2010/5/4

*说明:代码注释与讲解详见《51单片机C语言创新教程》温子祺等着，北京航空航天大学出版社

*/

#include"stc.h"

typedefunsignedcharUINT8;

typedefunsignedint UINT16;

typedefunsignedlongUINT32;

typedefcharINT8;

typedefintINT16;

typedeflongINT32;

#defineTIMER0_INITIAL_VALUE5000

#defineHIGH1

#defineLOW0

#defineON1

#defineOFF0

#defineSEG_PORTP0

#defineLS164_DATA(x){if((x))P0_4=1;elseP0_4=0;}

#defineLS164_CLK(x){if((x))P0_5=1;elseP0_5=0;}

#defineNORTH_R_LIGHT(x){if((x))P2_0=0;elseP2_0=1;}

#defineNORTH_Y_LIGHT(x){if((x))P2_1=0;elseP2_1=1;}

#defineNORTH_G_LIGHT(x){if((x))P2_2=0;elseP2_2=1;}

#defineSOUTH_R_LIGHT(x){if((x))P2_3=0;elseP2_3=1;}

#defineSOUTH_Y_LIGHT(x){if((x))P2_4=0;elseP2_4=1;}

#defineSOUTH_G_LIGHT(x){if((x))P2_5=0;elseP2_5=1;}

#defineTRAFFIC_STATUS_10

#defineTRAFFIC_STATUS_21

#defineTRAFFIC_STATUS_32

#defineUART_MARKER0xEE

UINT8Timer0IRQEvent=0;

UINT8Time1SecEvent=0;

UINT8Time500MsEvent=0;

UINT8TimeCount=0;

UINT8SegCurPosition=0;

UINT8LightOrgCount[4]={15,5,15,5};

UINT8LightCurCount[4]={15,5,15,5};

UINT8TrafficLightStatus=0;

codeUINT8SegCode[10]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90};

UINT8SegBuf[4]={0};

codeUINT8SegPosition[4]={0x07,0x0b,0x0d,0x0e};

typedefstruct_LIGHT_VAL

{

UINT8Head;

UINT8val[4];

}LIGHT_VAL;

typedefunion_LIGHT_VAL_EX

{

LIGHT_VALlv;

UINT8p[5];

}LIGHT_VAL_EX;

voidLS164Send(UINT8byte)

{

UINT8j;

for(j=0;j<=7;j++)

{

if(byte&(1<<(7-j)))

{

LS164_DATA(HIGH);

}

else

{

LS164_DATA(LOW);

}

LS164_CLK(LOW);

LS164_CLK(HIGH);

}

}

voidRefreshDisplayBuf(UINT8s1) //刷新显示缓存

{

SegBuf[0]=s1%10;

SegBuf[1]=s1/10;

SegBuf[2]=s1%10;

SegBuf[3]=s1/10;

}

voidSegDisplay(void)

{

UINT8t;

t=SegCode[SegBuf[SegCurPosition]];

SEG_PORT|=0x0f;

LS164Send(t);

SEG_PORT=(SEG_PORT|0x0f)&SegPosition[SegCurPosition];

if(++SegCurPosition>=4)

{

SegCurPosition=0;

}

}

voidTimerInit(void)

{

TH1=0;

TL1=0;

TH0=(65536-TIMER0_INITIAL_VALUE)/256;

TL0=(65536-TIMER0_INITIAL_VALUE)%256;//定时1MS

TMOD=0x51; /*01010001T1计数,T0定时*/

}

voidTimer0Start(void)

{

TR0=1; //启动计时器1

ET0=1;

}

voidTimer0Stop(void)

{

TR0=0; //启动计时器1

ET0=0;

}

voidPortInit(void)

{

P0=P1=P2=P3=0xFF;

}

voidUartInit(void)

{

SCON=0x40;

T2CON=0x34;

RCAP2L=0xD9;

RCAP2H=0xFF;

REN=1;

ES=1;

}

voidUartSendByte(UINT8byte)

{

SBUF=byte;

while(TI==0);

TI=0;

}

voidUartPrintfString(INT8*str)

{

while(str&&*str)

{

UartSendByte(*str++);

}

}

voidmain(void)

{

UINT8i=0;

PortInit();

TimerInit();

Timer0Start();

UartInit();

RefreshDisplayBuf(LightCurCount[0]);

EA=1;

NORTH_R_LIGHT(ON);

SOUTH_G_LIGHT(ON);

while(1)

{

if(Timer0IRQEvent)

{

Timer0IRQEvent=0;

TimeCount++;

if(TimeCount>=200)

{

TimeCount=0;

if(LightCurCount[0])

{

TrafficLightStatus=0;

}

elseif(LightCurCount[1])

{

TrafficLightStatus=1;

}

elseif(LightCurCount[2])

{

TrafficLightStatus=2;

}

elseif(LightCurCount[3])

{

TrafficLightStatus=3;

}

else

{

for(i=0;i<4;i++)

{

LightCurCount[i]=LightOrgCount[i];

}

TrafficLightStatus=0;

}

switch(TrafficLightStatus)

{

case0:

{

NORTH_R_LIGHT(ON);

SOUTH_R_LIGHT(OFF);

NORTH_G_LIGHT(OFF);

SOUTH_G_LIGHT(ON);

NORTH_Y_LIGHT(OFF);

SOUTH_Y_LIGHT(OFF);

}

break;

case1:

{

if(LightCurCount[1]%2)

{

NORTH_R_LIGHT(ON);

SOUTH_G_LIGHT(ON);

}

else

{

NORTH_R_LIGHT(OFF);

SOUTH_G_LIGHT(OFF);

}

NORTH_Y_LIGHT(ON);

SOUTH_Y_LIGHT(ON);

}

break;

case2:

{

NORTH_R_LIGHT(OFF);

SOUTH_R_LIGHT(ON);

NORTH_G_LIGHT(ON);

SOUTH_G_LIGHT(OFF);

NORTH_Y_LIGHT(OFF);

SOUTH_Y_LIGHT(OFF);

}

break;

case3:

{

if(LightCurCount[3]%2)

{

NORTH_G_LIGHT(ON);

SOUTH_R_LIGHT(ON);

}

else

{

NORTH_G_LIGHT(OFF);

SOUTH_R_LIGHT(OFF);

}

NORTH_Y_LIGHT(ON);

SOUTH_Y_LIGHT(ON);

}

break;

default:break;

}

RefreshDisplayBuf(LightCurCount[TrafficLightStatus]);

LightCurCount[TrafficLightStatus]--;

}

SegDisplay();

}

}

}

voidUartIRQ(void)interrupt4

{

staticUINT8cnt=0;

staticLIGHT_VAL_EXLightValEx;

if(RI)

{

RI=0;

LightValEx.p[cnt++]=SBUF;

if(LightValEx.lv.Head==UART_MARKER)

{

if(cnt>=5)

{

for(cnt=1;cnt<5;cnt++)

{

LightOrgCount[cnt-1]=LightValEx.lv.val[cnt];

LightCurCount[cnt-1]=LightValEx.lv.val[cnt];

}

cnt=0;

UartPrintfString("设置交通灯完成 ");

}

}

else

{

cnt=0;

}

}

}

voidTimer0IRQ(void)interrupt1

{

ET0 =0;

TH0=(65536-TIMER0_INITIAL_VALUE)/256;

TL0=(65536-TIMER0_INITIAL_VALUE)%256;//定时1MS

Timer0IRQEvent=1;

ET0 =1;

}

=====================================================================

坐等拿分！