这是电子钟程序，编译时没错，但6位码管没显示，我找不出程序的错，求大神看一下
#include<reg52.h>#define uchar unsigned char
#define uint unsigned int
sbit dula=P2^6;
sbit wela=P2^7;
sbit beep=P2^3;
uchar h2,h1,f2,f1,s2,s1;
uchar pp,temp,key,ok;
uchar a0,a1,a2,a3,a4,a5,m,k,t;
uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,
0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
void delayms(uint x)
{
uint i,j;
for(i=x;i>0;i--)
for(j=50;j>0;j--);
}
void delay(unsigned char z) //延时
{
uchar g,l,f;
for(g=z;f>0;f--)
for(l=125;l>0;l--);
}
void display(uchar h2,uchar h1,uchar f2,uchar f1,uchar s2,uchar s1)
{
dula=0;
P0=table[h2]; //显示小时十位段码
dula=1;
wela=0;
P0=0xfe; //显示小时十位
wela=1;
delayms(10);
dula=0;
P0=table[h1]|0x80; //显示小时个位段码及小数点
dula=1;
wela=0;
P0=0xfd; //显示小时个位
wela=1;
delayms(10);
dula=0;
P0=table[f2]; //显示分钟十位段码
dula=1;
wela=0;
P0=0xfb; //显示分钟十位
wela=1;
delayms(10);
dula=0;
P0=table[f1]|0x80; //显示分钟十位段码及小数点
dula=1;
wela=0;
P0=0xf7; //显示分钟十位
wela=1;
delayms(10);
dula=0;
P0=table[s2]; //显示秒钟十位段码
dula=1;
wela=0;
P0=0xef; //显示秒钟十位
wela=1;
delayms(10);
dula=0;
P0=table[s1]; //显秒钟个位段码
dula=1;
wela=0;
P0=0xdf; //显示秒钟个位
wela=1;
delayms(10);
}
void keyscan0() //键盘扫描
{
dula=0; //关段选
wela=0; //关位选
while(1)
{
P3=0xfe; //键盘P3口赋值
temp=P3; //把P3口值赋给变量temp
temp=temp&0xf0; //屏蔽temp低四位
if(temp!=0xf0) //读temp值
{
delay(10); //防抖
if(temp!=0xf0) //再次读temp值
{
temp=P3; //P3口值赋给temp
switch(temp) //读P3口值
{
case 0xee:
ok=0;
break;
case 0xde:
ok=1;
break;
}
while(temp!=0xf0) //等待按键释放
{
temp=P3;
temp=temp&0xf0;
beep=0; //蜂鸣器开
}
beep=1; //蜂鸣器关
P1=0xfe; //指示灯亮
}
}
}
}
void keyscan() //键盘扫描
{
dula=0;
wela=0;
while(1)
{
P3=0xfd;
temp=P3;
temp=temp&0xf0;
if(temp!=0xf0)
{
delay(10);
if(temp!=0xf0)
{
temp=P3;
switch(temp)
{
case 0xed:
key=4;
break;
case 0xdd:
key=5;
break;
case 0xbd:
key=6;
break;
case 0x7d:
key=7;
break;
}
while(temp!=0xf0)
{
temp=P3;
temp=temp&0xf0;
beep=0;
}
beep=1;
}
}
P3=0xfb;
temp=P3;
temp=temp&0xf0;
if(temp!=0xf0)
{
delay(10);
if(temp!=0xf0)
{
temp=P3;
switch(temp)
{
case 0xeb:
key=8;
break;
case 0xdb:
key=9;
break;
case 0xbb:
key=10;
break;
case 0x7b:
key=11;
break;
}
while(temp!=0xf0)
{
temp=P3;
temp=temp&0xf0;
beep=0;
}
beep=1;
}
}
P3=0xf7;
temp=P3;
temp=temp&0xf0;
if(temp!=0xf0)
{
delay(10);
if(temp!=0xf0)
{
temp=P3;
switch(temp)
{
case 0xe7:
key=12;
break;
case 0xd7:
key=13;
break;
case 0xb7:
key=14;
break;
case 0x77:
key=15;
break;
}
while(temp!=0xf0)
{
temp=P3;
temp=temp&0xf0;
beep=0;
}
beep=1;
}
}
}
}
void main()
{
TMOD=0x01;
TH0=(65536-46080)/256; //定时器装初值
TL0=(65536-46080)%256;
EA=1;
ET0=1;
TR0=1;
while(1){
keyscan(); //调用键盘扫描函数
if(ok==0){
TR0=0;
keyscan(); //调用键盘扫描函数
switch(key){
case 2:
m+=1; //
if(m==60)
m=0;
break;
case 3:
m-=1;
if(m==0)
m=60;
break;
case 4:
k+=1;
if(k==60)
k=0;
break;
case 5:
k-=1;
if(k==0)
k=60;
break;
case 6:
t+=1;
if(t==60)
t=0;
break;
case 7:
t-=1;
if(t==0)
t=60;
break;
}
a5=m%10;
a4=m/10;
a3=k%10;
a2=k/10;
a1=t%10;
a0=t/10;
display(a0,a1,a2,a3,a4,a5);
}
else
{
TR0=1;
if(pp==20)
{
pp=0;
m++;
if(m==60)
{
m=0;
k++;
if(k==60)
{
k=0;
t++;
if(t==24)
{
t=0;
}
}
}
}
a5=m%10;
a4=m/10;
a3=k%10;
a2=k/10;
a1=t%10;
a0=t/10;
display(a0,a1,a2,a3,a4,a5);
}
}
}
void time0() interrupt 1
{
TH0=(65536-46080)/256;
TL0=(65536-46080)%256;
pp++;
if(pp==20)
{
pp=0;
m++;
if(m==60)
{
m=0;
k++;
if(k==60)
{
k=0;
t++;
if(t==24)
{
t=0;
}
}
}
}
}
