日志
交通燈程序
#include<reg52.h>
#define uchar unsigned char //¶¨òåÎaucharààDí
#define uint unsigned int //¶¨òåÎauintààDí
uchar code table[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90}; //êyÂë1üÏÔê¾0~9
uchar t=3;
uchar time_Count; //½øDD¼Æê±
uchar ge,shi; //òaÏÔê¾μĸöλoíê®Î»
void delay(uchar z) //ò»¸öÑóê±oˉêy
{
uchar a,b;
for(a=0;a<150;a++)
{
for(b=0;b<z;b++);
}
}
void Init_Timer() //¶¨ê±Æ÷μÄ3õê¼»ˉ
{
TMOD=0x01;
TH0=(65536-5000)/256;
TL0=(65536-5000)%256;
ET0=1;
TR0=1;
EA=1;
}
void Seg_Disp() //½«¸öλê®Î»·Ö±eÏÔê¾ÔúêyÂë1üéÏÃæ
{
P2=0xfe;
P0=table[ge];
delay(1);
P2=0xfd;
P0=table[shi];
delay(1);
}
void main() //3ìDòÔËDDμÄÖ÷oˉêy
{
SP=0x6f;
P0=0xff;
P2=0xff;
P1=0x00;
Init_Timer();
while(1)
{
Seg_Disp();
if(time_Count==200)
{
time_Count=0;
ge++;
if(t==3)
{
P1=0x01;
if(ge==10)
{
ge=0;
shi++;
if(shi==1)
{
shi=0;
t=2;
}
}
}
if(t==2)
{
P1=0x02;
if(ge==6)
{
ge=0;
t=1;
}
}
if(t==1)
{
P1=0x04;
if(ge==10)
{
ge=0;
shi++;
if(shi==1)
{
shi=0;
t=0;
}
}
}
if(t==0)
{
P1=0x02;
if(ge==6)
{
ge=0;
t=3;
}
}
}
}
}
void timer0() interrupt 1 using 1 //¶¨ê±Æ÷0μÄ2ù×÷¼Æê±
{
TH0=(65536-5000)/256;
TL0=(65536-5000)%256;
time_Count++;
}
