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#include<reg51.h>
#include<intrins.h>
#define uchar unsigned char
#define uint unsigned int
sbit wei_dx1=P2^0;
sbit wei_dx2=P2^1;
sbit wei_nb1=P3^6;
sbit wei_nb2=P3^7;
sbit nb_y=P2^2;
sbit nb_g=P2^3;
sbit nb_r=P2^4;
sbit dx_y=P2^5;
sbit dx_g=P2^6;
sbit dx_r=P2^7;
sbit choic=P1^7;
sbit kongzhi=P1^6;
uchar count=0;
uchar time_long=25,time_short=20;
uchar flag_1s,flag_500ms,flag_light=0,flag_long=1;
uchar show_nb=25,show_dx=30,time_nb=0,time_dx=0;
//uchar code show[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90}; //共陽極
uchar code show[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=500;y>0;y--);
}
void Timer0Init(void)
{
EA = 1;
TMOD = 0X11;
ET0 = 1;
TR0 = 1;
TH0 = 0x3c;
TL0 = 0xb0;
}
void time(void) interrupt 1
{
TH0 = 0x3c;
TL0 = 0xb0;
count++;flag_light++;
if(count==20)
{
count=0;
flag_1s=1;
}
if(flag_light % 12 == 0)
flag_500ms = ~flag_500ms;
}
void do_time()
{
if(flag_long==1)
{
if(flag_1s==1) //南北綠燈亮長
{
flag_1s=0;
show_nb--;
show_dx--;
if(show_nb==0)
{
show_nb=5;
}
if(show_dx==0)
{
flag_long=0;
time_dx=1;
time_nb=0;
}
}
}
if(flag_long==0)
{
if(flag_1s==1) //東西綠燈亮短
{
flag_1s=0;
show_nb--;
show_dx--;
if(show_dx==0)
{
show_dx=5;
}
if(show_nb==0)
{
flag_long=1;
time_dx=0;
time_nb=1;
}
}
}
}
//紅綠燈顯示
void light()
{
if(flag_long==1)
{
if(show_dx>5)
{
nb_g=0;
nb_y=1;
nb_r=1;
dx_g=1;
dx_y=1;
dx_r=0;
}
else if(show_dx<=5)
{
nb_g=1;
nb_r=1;
dx_g=1;
dx_y=1;
dx_r=0;
if(flag_500ms==0) //黃燈閃爍
{
nb_y=0; //亮
}
else
{
nb_y=1; //滅
}
}
}
if(flag_long==0)
{
if(show_nb>5)
{
nb_g=1;
nb_y=1;
nb_r=0;
dx_g=0;
dx_y=1;
dx_r=1;
}
else if(show_nb<=5)
{
nb_g=1;
nb_r=0;
nb_y=1;
dx_g=1;
dx_r=1;
if(flag_500ms==0) //黃燈閃爍
{
dx_y=0; //亮
}
else
{
dx_y=1; //滅
}
}
}
}
void display()
{
P0=0xff; //共陰極改
wei_dx1=0;
wei_dx2=0;
wei_nb1=0;
wei_nb2=0;
P0=show[show_nb%10];
wei_dx1=1;
wei_dx2=1;
wei_nb1=0;
wei_nb2=1;
delay(3);
P0=0xff;
P0=show[show_nb/10];
wei_dx1=1;
wei_dx2=1;
wei_nb1=1;
wei_nb2=0;
delay(3);
P0=0xff;
P0=show[show_dx%10];
wei_dx1=0;
wei_dx2=1;
wei_nb1=1;
wei_nb2=1;
delay(3);
P0=0xff;
P0=show[show_dx/10];
wei_dx1=1;
wei_dx2=0;
wei_nb1=1;
wei_nb2=1;
delay(3);
}
void main()
{
choic=1;
kongzhi=1;
Timer0Init();
while(1)
{
if(choic==1)
{
do_time();
light();
if(time_dx==1)
{
show_nb=time_long;
show_dx=time_short;
time_dx=0; //重置0，不然time_dx==1括號里的程序會一直賦值
};
if(time_nb==1)
{
show_nb=time_long;
show_dx=30;
time_nb=0;
};
display();
}
if(choic==0)
{
P0=0xff;
wei_dx1=1;
wei_dx2=1;
wei_nb1=1;
wei_nb2=1;
if(kongzhi!=1)
{
delay(10);
if(kongzhi!=1)
{
nb_g=~nb_g;
nb_y=1;
nb_r=~nb_r;
dx_g=~dx_g;
dx_y=1;
dx_r=~dx_r;
while(kongzhi==0);
}
}
}
}
}

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