51单片机数码管动态显示不成功

Question

#include<reg52.h>
#define uint unsigned int
#define uchar unsigned char
sbit dula=P2^6;
sbit wela=P2^7;
uchar code table[]=
{ 0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71};
uchar temp,num,bai,shi,ge,count,aa;
void display(uchar bai,uchar shi,uchar ge);
void init();
void delay(uint z);
void main()
{
init();
if(aa==20)
{
aa=0;
num++;
}
bai=num/100;
shi=num%100/10;
ge=num%10;
while(1)
{
display(bai,shi,ge);
}
}
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x++)
for(y=120;y>0;y++);
}
void display(uchar bai,uchar shi,uchar ge)
{

dula=1;
P1=table[bai];
dula=0;
P1=0xff;

wela=1;
P1=0xfd;
wela=0;
delay(2);

dula=1;
P1=table[shi];
dula=0;
P1=0xff;

wela=1;
P1=0xfa;
wela=0;
delay(2);

dula=1;
P1=table[ge];
dula=0;
P1=0xff;

wela=1;
P1=0xf7;
wela=0;
delay(2);
P1=0x00;
}
void timer0() interrupt 1
{
aa++;

}
void init()
{
aa=0;
dula=0;
wela=0;
aa=0;
num=0;
TMOD=0x01;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
EA=1;
ET0=1;
TR0=1;
}
只是显示一个0.也不动。。。。

Answer 1

你的这些代码没有放到while(1)中，
if(aa==20)
{
aa=0;
num++;
}
bai=num/100;
shi=num%100/10;
ge=num%10;

追问

放进去也不行

追答

你那个定时器里面重新赋值
void main()
{
init();

while(1)
{
display(bai,shi,ge);
}
}
void timer0() interrupt 1
{
aa++;

TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
if(aa==20)
{
aa=0;
num++;
}
bai=num/100;
shi=num%100/10;
ge=num%10;
}