#include<reg51.h>
#include<intrins.h>
#define uchar unsigned char
#define uint unsigned char
uchar code Str[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
sbit one=P2^6;
sbit two=P2^7;
sbit a1=P0^0;
sbit a2=P0^1;
sbit a3=P0^2;
sbit a4=P0^3;
sbit a5=P0^4;
sbit a6=P0^5;
sbit a7=P0^6;
sbit a8=P0^7;
sbit a9=P2^0;
sbit a11=P2^2;
sbit a10=P2^1;
sbit a12=P2^3;
uchar Mum=30;
uchar flag=0;
uchar h=5;
void Delay(uchar z)
{
uchar i;
while(z--)
for(i=125;i>0;i--);
}
void Display()
{
uchar x,y;
x=Mum/10;
y=Mum%10;
P1=Str[x];
one=0;
two=1;
Delay(h);
one=1;
two=1;
P1=Str[y];
one=1;
two=0;
Delay(h);
one=1;
two=1;
}
void Lamp()
{
if(flag==0) //紅燈通行狀態
{
a1=1;
a2=0;
//a3=1;
a4=0;
a5=1;
//a6=1;
a7=1;
a8=0;
//a9=1;
a10=0;
a11=1;
//a12=1;
}
if(flag==1)
{
a1=0;
a2=1;
//a3=1;
a4=1;
a5=0;
//a6=1;
a7=0;
a8=1;
//a9=1;
a10=1;
a11=0;
//a12=1;
}
if(Mum<=3)
{
h=50;
a3=0;
a6=0;
a9=0;
a12=0;
Delay(300);
a3=1;
a6=1;
a9=1;
a12=1;
}
}
void main()
{
EA=1;
TMOD=0x10;
TH1=(65536-50000)/256;
TL1=(65536-50000)%256;
ET1=1;
TR1=1;
while(1)
{
Display();
Lamp();
}
}
void ET_() interrupt 3
{
uchar k;
TMOD=0x10;
TH1=(65536-50000)/256;
TL1=(65536-50000)%256;
k++;
if(k>=20)
{
k=0;
Mum--;
}
if(Mum==0)
{
Mum=30;
flag=!flag;
}
}
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