基于51单片机的交通信号灯系统本科毕设论文 - 百度文库

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2.

#include #include\

/*************˿ڶ*************/

sbit EW_ShuMa2=P2^3; //EWλܿλ sbit EW_ShuMa1=P2^2; //EWλܿλ sbit SN_ShuMa2=P2^1; //SNλܿλ sbit SN_ShuMa1=P2^0; //SNλܿλ

sbit SN_Yellow=P1^1; //SNƵ

sbit EW_Yellow=P1^5; //EWƵ

sbit EW_ManGreen=P2^7; //EWе̵ sbit SN_ManGreen=P2^4; //SNе̵ sbit EW_ManRed=P2^6; //EWе sbit SN_ManRed=P2^5; //SNе sbit EW_Red=P1^6; //EWֱе sbit SN_Red=P1^2; //SNֱе

sbit shezhi1=P3^0; //ģʽü

sbit shezhi2=P3^1; //ģʽü sbit stop1=P3^7; //

bit Flag_SN_Yellow; //SNƵƱ־λ bit Flag_EW_Yellow; //EWƵƱ־λ

char Time_EW; //򵹼ʱԪ char Time_SN; //ϱ򵹼ʱԪ

uchar EW=30,SN=20,EWL=9,SNL=9; //ʼֵģʽ uchar EW1=30,SN1=20,EWL1=9,SNL1=9;

uchar code table[10]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F}; //0-9ѡ

uchar code State[8]={0xBE,0xBD,0xB7,0xBD,0xEB,0xDB,0x7B,0xDB}; /****************************/ void Delay_ms(uint z); void ShuMa_Display(); void timer0_init(); void state1(); void state2();

void state3(); void state4();

/**************************/ void main() {

timer0_init(); //ʱʼ EW1=read(10); //24c02 SN1=read(11); EWL1=read(12);

SNL1=read(13); EW=EW1; SN=SN1; EWL=EWL1; SNL=SNL1; //Int_init(); while(1) { state1();

state2();

state3(); state4(); } }

/*************ʱ*************/ /*void Delay_ms(uint z) { uint x,y;

for(x=120;x>0;x--) for(y=z;y>0;y--);

}*/

/**************ʾ*****************/ void ShuMa_Display() {

uchar H,L;

H=Time_EW/10; L=Time_EW;

P0=table[L];

EW_ShuMa2=0; //EW_LED2

Delay_ms(1);

EW_ShuMa2=1; //ϨEW_LED2 P0=table[H];

EW_ShuMa1=0; //EW_LED1 Delay_ms(1); EW_ShuMa1=1; H=Time_SN/10; L=Time_SN;

P0=table[L];

SN_ShuMa2=0; //SN_LED2 Delay_ms(1); SN_ShuMa2=1; P0=table[H]; SN_ShuMa1=0; //SN_LED1 Delay_ms(1); SN_ShuMa1=1;

}

/***************ģʽ****************/ void state1() {

/*********SNͨSWֹ*********/ SN_ManRed=1; SN_ManGreen=0; //SNеͨ EW_ManRed=0; //EWеֹ EW_ManGreen=1; Flag_SN_Yellow=0; //SNػƵʾź Flag_EW_Yellow=0; //EWػƵʾź

Time_EW=EW; Time_SN=SN;

while(Time_SN>=5) {

P1=State[0]; //SN̵ƣEW ShuMa_Display(); }

P1=0xff;//رP1е while(Time_SN>=0) {

Flag_SN_Yellow=1; //SNƵźλ EW_Red=0; //P1=P1 |0XB0; //EW ShuMa_Display(); } }

void state2() { /************SN״̬**********/

SN_ManRed=0; //SNеֹ SN_ManGreen=1;

EW_ManRed=0; //EWеֹ EW_ManGreen=1;

Flag_SN_Yellow=0; //SNػƵʾź Flag_EW_Yellow=0; //EWػƵʾź Time_SN=SNL; Time_EW=EWL; while(Time_SN>=5)

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