LCD1602液晶显示屏显示时钟且能修改时间

minutesshi=minutes/10;
minutesge=minutes%10;
write_command(0x80+0x43);
write_date(minutesshi+48);
delay(1);
write_date(minutesge+48);
delay(1);

secondsshi=seconds/10;
secondsge=seconds%10;
write_command(0x80+0x46);
write_date(secondsshi+48);
delay(1);
write_date(secondsge+48);
delay(1);
}
void revise()
{
if(K1==0)
{
delay(5);
if(K1==0)
{
cnt++;//计数第几次按下
TR0=0;
}
while(!K1);
delay(5);
while(!K1);
}
if(cnt==1)//第一次按下，调整秒钟,调整时秒钟有光标闪烁
{
write_command(0x80+0x46);
write_command(0x0f);
if(K2==0)
{
delay(5);
if(K2==0)
{
seconds++;
if(seconds==60)
{
seconds=0;
}
}
while(!K2);
delay(5);
while(!K2);
}
if(K3==0)
{
delay(5);
if(K3==0)
{
seconds--;
if(seconds==-1)//here is a bug
{
seconds=59;
}
}
while(!K3);
delay(5);
while(!K3);
}
}

if(cnt==2)//第二次按下，调整分钟,调整时秒钟有光标闪烁
{
write_command(0x80+0x43);
write_command(0x0f);
if(K2==0)
{
delay(5);
if(K2==0)
{
minutes++;
if(minutes==60)
{
minutes=0;
}
}
while(!K2);
delay(5);
while(!K2);
}
if(K3==0)
{
delay(5);
if(K3==0)
{
minutes--;
if(minutes==-1)//here is a bug
{
minutes=59;
}
}
while(!K3);
delay(5);
while(!K3);
}
}
if(cnt==3)//第三次按下，调整时钟,调整时秒钟有光标闪烁
{
write_command(0x80+0x40);
write_command(0x0f);
if(K2==0)
{
delay(5);
if(K2==0)
{
hour++;
if(hour==24)
{
hour=0;
}
}
while(!K2);
delay(5);
while(!K2);
}
if(K3==0)
{
delay(5);
if(K3==0)
{
hour--;
if(hour==-1)//here is a bug
{
hour=23;
}
}
while(!K3);
delay(5);
while(!K3);
}
}
if(cnt==4)
{
TR0=1;
cnt=0;
}
}
void main()
{
LCDinit();
Time0init();
Clockinit();
while(1)
{
revise();
display(hour,minutes,seconds);
}
}
void Time0() interrupt 1
{
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
count++;
if(count==20)
{
count=0;
seconds++;
if(seconds==60)
{
seconds=0;
minutes++;
if(minutes==60)
{
minutes=0;
hour++;
if(hour==24)
{
hour=0;
}
}
}
}
}