#include<reg51.h>
#define unchar unsigned char
void delay0_5s();
void delay_t(unsigned char t);
void traffic();
unsigned char t0,t1;
void mian()
{
TMOD=0x21;
TH1=0xfd;
TL1=0xfd;
TR1=1;
SCON=0x50;
PCON=0x00;
EA=1;
ES=1;
while(1){
traffic();
}
}
void traffic()
{
unsigned char k;
P1=0xf3;
delay_t(10);
for(k=0;k<3;k++)
{
P1=0xfb;
delay0_5s();
P1=0xf3;
delay0_5s();
}
P1=0xeb;
delay_t(4);
P1=0xde;
delay_t(10);
for(k=0;k<3;k++)
{
P1=0xdf;
delay0_5s();
P1=0xde;
delay0_5s();
}
P1=0xdd;
delay_t(4);
}
void seral()interrupt 4
{
unsigned char i;
EA=0;
if(RI==1)
{
RI=0;
if(SBUF==0x01)
{
SBUF=0x01;
while(!TI);
TI=0;
i=P1;
P1=0xdb;
while(SBUF!=0x02);
{
while(!RI);
RI=0;
}
SBUF=0x02;
while(!TI);
TI=0;
P1=i;
EA=1;
}
else
{
EA=1;
}
}
}
void delay0_5s()
{
for(t0=0;t0<0x0a;t0++)
{
TH0=0x3c;
TL0=0xb0;
TR0=1;
while(!TF0)
TF0=0;
}
}
void delay_t(unsigned char t)
{
for(t1=0;t1<t;t1++)
delay0_5s();
}
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