共阳数码管，不显示时间数据，请大家帮我看看程序什么问题。 -

//适用于STC15系列
#include <STC15F2K60S2.H>
//#include "STC15.h"
#define uint unsigned int
#define uchar unsigned char
sbit key1 =P3^0;
sbit key2 =P3^1;
sbit seg1 =P5^4;
sbit seg2 =P3^3;
sbit seg3 =P3^7;
sbit seg4 =P5^5;
sbit a=P1^1;
sbit b=P3^6;
sbit c=P1^4;
sbit d=P1^3;
sbit e=P1^2;
sbit f=P1^0;
sbit g=P1^5;
sbit h=P3^2;
//顺序共阳极数码管段码表
unsigned char code table[]={//共阳数码管段码"0~f-."
0xc0,0xf9,0xa4,0xb0,
0x99,0x92,0x82,0xf8,
0x80,0x90,0x88,0x83,
0xc6,0xa1,0x86,0x8e,0xbf,0x7f};
uchar hour=12,min=0,sec=0;
uchar tcnt;
bit flag;
void delayms(uint k)//1T
{
uint i,j;
for(i=k;i>0;i--)
for(j=1250;j>0;j--);//1T
}
/*
void InitTimer0() //50毫秒@11.0592MHz
{
AUXR &= 0x7F; //定时器时钟12T模式
TMOD &= 0xF0; //设置定时器模式
TL0 = 0x00; //设置定时初值
TH0 = 0x4C; //设置定时初值
TF0 = 0; //清除TF0标志
TR0 = 1; //定时器0开始计时
EA = 1;
ET0 = 1;
}*/
void InitTimer0()//50毫秒@12.000MHz
{
AUXR &= 0x7F; //定时器时钟12T模式
TMOD &= 0xF0; //设置定时器模式
TL0 = 0xB0; //设置定时初值
TH0 = 0x3C; //设置定时初值
TF0 = 0; //清除TF0标志
TR0 = 1; //定时器0开始计时
EA = 1;
ET0 = 1;
}
void keyscan()
{
static uchar count1,count2;
if(!key1)
{
if(++count1>=100)
{
count1=0;
hour++;
if(hour>=24)
hour=0;
}
}
else count1=0;
if(!key2)
{
if(++count2>=100)
{
count2=0;
min++;
tcnt=0;
sec=0;
if(min>=60)
min=0;
}
}
else count2=0;
}
void displayHH(uchar i)
{
a=i&0x01;i>>=1;
b=i&0x01;i>>=1;
c=i&0x01;i>>=1;
d=i&0x01;i>>=1;
e=i&0x01;i>>=1;
f=i&0x01;i>>=1;
g=i&0x01;i>>=1;
h=i&0x01;
}
/*
void displayHH(uchar q)
{
switch(q)
{
case 0:a=b=c=d=e=f=0;g=h=1;break;
case 1:b=c=0;a=d=e=f=g=h=1;break;
case 2:a=b=d=e=g=0;c=f=h=1;break;
case 3:a=b=c=d=g=0;e=f=h=1;break;
case 4:b=c=f=g=0;a=d=e=h=1;break;
case 5:a=c=d=f=g=0;b=e=h=1;break;
case 6:a=c=d=e=f=g=0;b=h=1;break;
case 7:a=b=c=0;d=e=f=g=h=1;break;
case 8:a=b=c=d=e=f=g=0;h=1;break;
case 9:a=b=c=d=f=g=0;e=h=1;break;
}
}*/
void display()
{
static uchar i=0;
seg1=seg2=seg3=seg4=0;//消隐
switch(i)
{
case 0: displayHH(table[hour/10]);seg1=1;seg2=0;seg3=0;seg4=0;break;
case 1: if(flag==1)
displayHH(table[hour%10]&0x7f);//加点
else displayHH(table[hour%10]);//不加点
seg1=0;seg2=1;seg3=0;seg4=0;break;
case 2: displayHH(table[min/10]) ;seg1=0;seg2=0;seg3=1;seg4=0;break;
case 3: displayHH(table[min%10]) ;seg1=0;seg2=0;seg3=0;seg4=1;break;
}
delayms(2);
i++;
i%=4;
}
void main(void)
{
P3M1 = 0x00; //P3.3/P3.7 推挽：0000 0000
P3M0 = 0x88; //P3.3/P3.7 推挽：1000 1000
P5M1 = 0x00; //P5.4/P5.5 推挽：0000 0000
P5M0 = 0x30; //P5.4/P5.5 推挽：0011 0000
InitTimer0();
while (1)
{
keyscan();
display();
}
}
void Timer0Interrupt(void) interrupt 1
{
tcnt++;
if(tcnt<10)
flag=1;
else flag=0;
if(tcnt>=20)
{
tcnt=0;
sec++;
if(sec>=60)
{
sec=0;
min++;
if(min>=60)
{
min=0;
hour++;
if(hour>=24)
hour=0;
}
}
}
}

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