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#include<reg52.h>
sbit EW_1=P1^0;
sbit EW_2=P1^1;
sbit NS_1=P1^2;
sbit NS_2=P1^3;
sbit add_red_time=P1^4;
sbit add_green_time=P1^5;
sbit reduce_red_time=P1^6;
sbit reduce_green_time=P1^7;
sbit EW_red=P2^0;
sbit EW_green=P2^1;
sbit EW_blue=P2^2;
sbit NS_red=P2^3;
sbit NS_green=P2^4;
sbit NS_blue=P2^5;
char count=0;
char red_time=30;
char green_time=25;
char blue_time=0;
char NS_second=0;
char EW_second=0;
char code smgduan[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};
char display_data[4]={0};
char temp_data[4]={0};
char NS_R_G_mode=0;
char EW_R_G_mode=0;
bit NS_R_G_flag=0;
bit EW_R_G_flag=0;
void delay(unsigned int i)
{
while(i--);
}
void Timer_init()
{
TMOD=0x01;
TH0=0x3C;
TL0=0xB0;
EA=1;
ET0=1;
TR0=1;
}
void lnit()
{
P0=0x00;
P2=0x00;
EW_1=1;
EW_2=1;
NS_1=1;
NS_2=1;
NS_led=1;
EW_led=1;
NS_second=red_time;
EW_second=green_time;
blue_time=red_time-green_time;
Timer_init();
}
void NS_SMG_drive(char*buff)
{
NS_1=0;
NS_2=1;
P0=~smgduan[buff[0]];
delay(5);
P0=0x00;
NS_1=1;
NS_2=0;
P0=~smgduan[buff[1]];
delay(5);
P0=0x00;
NS_1=1;
NS_2=1;
}
void EW_SMG_drive(char*buff)
{
EW_1=0;
EW_2=1;
P0=~smgduan[buff[2]];
delay(5);
P0=0x00;
EW_1=1;
EW_2=0;
P0=~smgduan[buff[3]];
delay(5);
P0=0x00;
EW_1=1;
EW_2=1;
}
void data_del(char*buff,char data1,char data2)
{
buff[0]=data1/10;
buff[1]=data1/10;
buff[2]=data2/10;
buff[3]=data2/10;
}
void Time_del()
{
if(count>=20)
{
NS_second--;
EW_second--;
switch(NS_R_G_mode)
{
case 0:
{
if(NS_second<0)
{
NS_second=green_time;
NS_R_G_mode=1;
}
}break;
case 1:
{
if(NS_second<0)
{
NS_second=blue_time;
NS_R_G_mode=2;
}
}break;
case 2:
{
if(NS_second<0)
{
NS_second=red_time;
NS_R_G_mode=0;
}
}break;
default:break;
}
switch(EW_R_G_mode)
case 0:
{
if(EW_second<0)
{
EW_second=green_time;
EW_R_G_mode=1;
}
}break;
case 1:
{
if(EW_second<0)
{
EW_second=blue_time;
EW_R_G_mode=2;
}
}break;
case 2:
{
if(EW_second<0)
{
EW_second=red_time;
EW_R_G_mode=0;
}
}break;
default:break;
}
count=0;
}
}
void R_G_B_led()
{
switch(NS_R_G_mode)
{
case0:
{
NS_blue=0;
NS_red=1;
}break;
case1:
{
NS_red=0;
NS_green=1;
}break;
case2:
{
NS_blue=0;
if(count<10)
NS_blue=1;
else
NS_blue=0;
}break;
default:break;
}
switch(NS_R_G_mode)
{
case0:
{
EW_blue=0;
EW_red=1;
}break;
case1:
{
EW_red=0;
EW_green=1;
}break;
case2:
{
EW_blue=0;
if(count<10)
EW_blue=1;
else
EW_blue=0;
}break;
default:break;
}
}
void Set_time()
{
if((add_red_time==0)||(add_green_time==0)||(reduce_red_time==0)||(reduce_green_time==0))
{
TR0=0;
P2=0x00;
EW_led=1;
NS_led=1;
while(1)
{
data_del(temp_data,red_time,green_time);
NS_SMG_drive(temp_data);
EW_SMG_drive(temp_data);
if(add_red_time==0)
{
delay(5);
if(add_red_time==0)
{
red_time++;
if(red_time>99)
red_time=99;
data_del(temp_data,red_time,red_time)￡?
NS_SMG_drive(temp_data);
}while(!add_red_time);
}
if(add_green_time==0)
{
delay(5);
if(add_green_time==0)
{
green_time++;
if(green_time>95)
green_time=95;
data_del(temp_data,green_time,green_time);
EW_SMG_drive(temp_data);
}while(!add_green_time);
}
if(reduce_red_time==0)
{
delay(5);
if(reduce_red_time==0)
{
red_time--;
if(red_time<10)
red_time=10;
data_del(temp_data,red_time,red_time);
NS_SMG_drive(temp_data);
}while(!reduce_red_time);
}
if(reduce_green_time==0)
{
delay(5);
if(reduce_green_time==0)
{
green_time--;
if(green_time<5)
green_time=5;
data_del(temp_data,green_time,green_time);
EW_SMG_drive(temp_data);
}while(!reduce_green_time);
}

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