单片机问题

只看该作者 · 2013-3-30 13:17

这个程序有什么问题，是52单片机，在开发板上只是显示两个数码管一直是零，亲各位前辈指点。
#include<reg52.h>
#define uchar unsigned char

sbit dual=P2^6;
sbit weal=P2^7;
sbit led=P1^0;
uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,
0x6d,0x7d,0x07,0x7f,0x6f};
uchar num1,num2,num,shi,ge;
void delay(uchar mxs)
{
int i,j;
for(i=mxs;i>0;i--)
for(j=110;j>0;j--);
}
void xing()
{
dual=1;
P0=table[ge];
dual=0;
P0=0xff;
weal=1;
P0=0xfd;
weal=0;
delay(5);
dual=1;
P0=table[shi];
dual=0;
P0=0xff;
weal=1;
P0=0xfe;
weal=0;
delay(5);
}
void main()
{
TMOD=0x11;
TH0=(65536-45872)/265;
TL0=(65536-45872)%256;
TH1=(65536-45872)/256;
TL1=(65536-45872)%256;
EA=1;
ET0=1;
ET1=1;
TR0=1;
TR1=0;
while(1)
{
  xing();
}
}
void T0_time()interrupt 1
{
TH0=(65536-45872)/256;
TL0=(65536-45872)%256;
num1++;
if(num1==4)
{
   num1=0;
   led=~led;
}
}
void T1_time() interrupt 3
{
TH1=(65536-45872)/256;
TL1=(65536-45872)%256;
   num2++;
if(num2==20)
   {
   num2=0;
   num++;
   if(num==60)
   {
      num=0;
   }
   ge=num%10;
   shi=num/10;
   }
}