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額，經過大佬指點，數碼管顯示時鐘調試正常。但是顯示太麻煩，用1602顯示來做。可是proteus仿真又出現了分鐘顯示和天顯示不動。沒找到原因；還有年用四位數表示時超內存了。數據類型該怎么選才合適；
單片機源程序如下:
#include<reg52.h>
#define uint unsigned int
#define uchar unsigned char
/*******1602指令端口選擇******************/
sbit lcdRS = P2^0;
sbit lcden = P2^1;
/*********按鍵端口定義************************/
sbit key0 = P1^0;
sbit key1 = P1^1;
sbit key2 = P1^2;
uchar table[] = "KEY" ;
uchar timenum[8] = {0,0,0,0,0,0,0,0};
uchar timenum1[8]= {0,0,0,0,0,0,0,0};
/*************常數聲明*****************/
int num=0;
uchar n,keynum;
char miao=12,fen=12,shi=12,year = 20,year1=20,mouth=8,day=5;
/*********延遲函數***********/
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=120;y>0;y--);
}
/*********1602指令寫入步驟***********/
void write_com(uchar com)
{
lcdRS = 0;
P0 = com;
delay(5);
lcden = 1;
delay(5);
lcden = 0;
}
/*********1602數據寫入方法***********/
void write_data(uchar date)
{
lcdRS = 1;
P0 = date;
delay(5);
lcden = 1;
delay(5);
lcden = 0;
}
/*********1602關鍵字寫入***********/
void init()
{
lcden = 0;
write_com(0x38); //顯示模式
write_com(0x0c); //開顯示，不顯示光標，光標不閃爍
write_com(0x06); //指針加一
write_com(0x01); //清顯示
}
/*********1602數據寫入***********/
void display()
{
write_com(0x80);
for(num = 0;num<3;num++)
{
write_data(table[num]);
delay(5);
}
write_com(0x80+0x06); //年月日顯示入口地址
for(num = 9;num>=0;num--)
{
if(num==2||num==5)
write_data(0x3a);
else
write_data(0X30+timenum1[num]);
delay(5);
}
write_com(0x80+0x41); //按鍵次數顯示；
write_data(0X30+keynum);
delay(5);
write_com(0x80+0x48); //時分秒顯示入口地址
for(num = 7;num>=0;num--)
{
if(num==2||num==5)
write_data(0x3a);
else
write_data(0X30+timenum[num]);
delay(5);
}
}
/************時間調整按鍵******************/
void key()
{
if(key0==0)
{
delay(5);
if(key0==0)
{
keynum++;
while(!key0);
}
if(keynum>=6)
keynum=0;
}
if(key1==0)
{
delay(5);
if(key1==0)
{
switch(keynum)
{
case 1: fen++;if(fen>=60){fen=0;}while(!key1);break;
case 2: shi++;if(shi>=24){shi=0;}while(!key1);break;
case 3: day++;
if(day==32||day==31||day==30||day==29)
{
switch(day)
{
case 32:
if(mouth==1||mouth==3||mouth==7||mouth==8||mouth==10||mouth==12){day=1;while(!key1);}break;
case 31:
if(mouth==4||mouth==5||mouth==6||mouth==9||mouth==11) { day=1;while(!key1); }break;
case 30:
if(mouth==2){ if(year/4==0&&year/100!=0||year/400==0){day=1;while(!key1);}}break;
case 29:
if(mouth==2){day=1;while(!key1);}break;
}
} while(!key1);break;
case 4: mouth++;if(mouth>=13){mouth=1;}while(!key1);break;
case 5: year++;if(year>=9999){year=0;}while(!key1);break;
}
}
}
if(key2==0)
{
delay(5);
if(key2==0)
{
switch(keynum)
{
case 1:if(fen<=0){fen=60;}fen--;while(!key2);break;
case 2:if(shi<=0){shi=24;}shi--;while(!key2);break;
case 4:if(mouth<=1){mouth=13;}mouth--;while(!key2);break;
case 5:if(year<=0){year=9999;}year--;while(!key2);break;
}
}
}
}
/***********開中斷定時************/
void zhongduan()
{
TMOD = 0X01;
TH0 = 0Xe0;
TL0 = 0Xb1;
TR0 = 1;
// TF0=0;
EA = 1;
ET0 = 1;
}
void main()
{
zhongduan();
init();
while(1)
{
/*************時分秒換算****************************/
timenum[0]=miao%10;
timenum[1]=miao/10;
timenum[3]=fen%10;
timenum[4]=fen/10;
timenum[6]=shi%10;
timenum[7]=shi/10;
/*************年月日換算****************************/
timenum1[0]=day%10;
timenum1[1]=day/10;
timenum1[3]=mouth%10;
timenum1[4]=mouth/10;
timenum1[6]=year%10;
timenum1[7]=year/10;
timenum1[8]=year1%10;
timenum1[9]=year1/10;
display();
key();
}
}
void timer() interrupt 1
{
TH0 = 0Xe0;
TL0 = 0Xb1;
n++;
if(n>=50)
{
miao++;
n=0;
if(miao>=60)
{
miao=0;
fen++;
if(fen>=60)
{
fen=0;
shi++;
if(shi>=24)
{
shi=0;
day++;
if(day==32||day==31||day==30||day==29)
{
switch(day)
{
case 32:
if(mouth==1||mouth==3||mouth==7||mouth==8||mouth==10||mouth==12){ day=1;mouth++; }break;
case 31:
if(mouth==4||mouth==5||mouth==6||mouth==9||mouth==11) { day=1;mouth++; }break;
case 30:
if(mouth==2){if(year/4==0&&year/100!=0||year/400==0){day=1;mouth++;}}break;
case 29:
if(mouth==2){day=1;mouth++;}break;
}
if(mouth==13)
{
mouth=1;year++;
if(year==100)
{
year=0;year1++;
}
}
}
}
}
}
}
}
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