给你改了,你对比一下就知道问题在哪。
#include <reg52.h>
#define uint unsigned int
#define uchar unsigned char
int num;
uchar aa,bai,shi,ge;
sbit dula=P2^6;
sbit wela=P2^7;
void delay(uint);
void init ();
void deplay();
uchar code table[]={
0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71};
void main()
{
init();
while(1)
{
if(aa==2)
{
aa=0;
num--;
if(num<0)
{
num=999;
}
}
bai=num/100;
shi=num%100/10;
ge =num%10;
deplay();
}
}
void init()
{
num=999;
// bai=9;
TMOD=0x01;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
EA=1;
ET0=1;
TR0=1;
}
void deplay()
{
P0=0xfe;
wela=1;
wela=0;
P0=table[bai];
dula=1;
dula=0;
delay(5);
P0=0xfd;
wela=1;
wela=0;
P0=table[shi];
dula=1;
dula=0;
delay(5);
P0=0xfb;
wela=1;
wela=0;
P0=table[ge];
dula=1;
dula=0;
delay(5);
}
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=100;y>0;y--);
}
void t0_time() interrupt 1
{
TH0=(65536-45872)/256;
TL0=(65536-45872)%256;
aa++;
} |