新手求助~求分析12864时钟程序，调时的时候总是出错

武文奇

新手求助~求分析12864时钟程序，调时的时候总是出错 [复制链接]

//液晶屏显示的时钟，可以通过键盘进行控制的

#include<reg52.h>

#define uint unsigned int

#define uchar unsigned char

sbit s1=P2^0;

sbit s2=P2^1;

sbit s3=P2^2;

sbit rd=P3^3;

sbit rs=P1^0;

sbit rw=P1^1;

sbit lcden=P1^2;

sbit psb=P1^3;

uchar count,s1num;

uchar code table[]="2012--07--04";

uchar code table1[]="23: 59: 50";

uchar count,shi,fen,miao,s1num,xiaoshi,day,mouth,year;

void delay(uint z)

{

uchar x,y;

for(x=z;x>0;x--)

for(y=110;y>0;y--);

}

void write_com(uchar com)   //写指令

{

rs=0;

rw=0;

lcden=0;

P0=com;

delay(5);

lcden=1;

delay(5);

lcden=0;

}

void write_dat(uchar dat) //写数据

{

rs=1;

lcden=0;

rw=0;

P0=dat;

delay(5);

lcden=1;

delay(5);

lcden=0;

}

void init()   //初始化

{

uchar num;

     psb=1;

lcden=0;

xiaoshi=23;

fen=59;

miao=55;

year=2012;

mouth=7;

day=4;

write_com(0x30);

write_com(0x0c);

write_com(0x06);

write_com(0x01);

write_com(0x80);

for(num=0;num<13;num++)

{

write_dat(table[num]);

delay(5);

}

write_com(0x88);

for(num=0;num<10;num++)

{

write_dat(table1[num]);

delay(5);

}

TMOD=0x01; //开启中断

TH0=(65536-50000)/256;

TL0=(65536-50000)%256;

EA=1;

ET0=1;

TR0=1;

}

void write_sfm(uchar add, uchar dat)        //写时分秒函数

{

uchar shi,ge;

shi=dat/10;

ge=dat%10; 

write_com(0x88+add);

write_dat(shi+0x30);

write_dat(ge+0x30);

}

void keyscan() //键盘扫描

{

s1num=0; //功能键程序

if(s1==0)

{

delay(5);

if(s1==0)

{

if(s1==0);

delay(5);

s1num=s1num+1;

while(!s1);

if(s1num==1)

{

TR0=0;

write_com(0x88+4);    

write_com(0x0f);

}

if(s1num==2)

{

write_com(0x88+2);

}

if(s1num==3)

{

write_com(0x88);

}

if(s1num==4)

{

s1num=0;

write_com(0x0c);

TR0=1;

}

}

}

//###########################################

if(s1num!=0)   //加数程序

{

if(s2==0)

{

delay(5);

if(s2==0)

{

while(!s2);

if(s1num==1)

{

miao++;

if(miao==60)

{

miao=0;

}

write_sfm(4,miao);

write_com(0x88+4); //+0x40+10

}

if(s1num==2)

{

fen++;

if(fen==60)

fen=0;

write_sfm(2,fen);

write_com(0x88+2); // +0x40+7

}

if(s1num==3)

{

shi++;

if(shi==24)

shi=0;

write_sfm(4,xiaoshi);

write_com(0x88); // +0x40+4

}

}

}

//##########################################

if(s3==0)  //减数程序

{

delay(5);

if(s3==0)

{

while(!s3);

if(s1num==1)

{

miao--;

if(miao==-1)

miao=59;

write_sfm(4,miao);

write_com(0x88); //+0x40+10

}

if(s1num==2)

{

fen--;

if(fen==-1)

fen=59;

write_sfm(2,fen);

write_com(0x88+2);

}

if(s1num==3)

{

shi--;

if(shi==-1)

shi=23;

write_sfm(0,shi);

write_com(0x88);

}

}

}

}

}

void main()    //主函数

{

init();

while(1)

{

keyscan();

}

}

void timer0() interrupt 1   //中断函数

{

TH0=(65536-50000)/256;

TL0=(65536-50000)%256;

count++;

if(count==20)

{

count=0;

miao++;

if(miao==60)

{

miao=0;

fen++;

if(fen==60)

{

fen=0;

xiaoshi++;

if(xiaoshi==24)

{  

xiaoshi=0;

day++;

if(day==4)

{

day=0;

mouth++;

if(mouth==4)

{

mouth=0;

year++;

} write_sfm(-5,mouth);

} write_sfm(-3,day);

}

write_sfm(0,xiaoshi);

}

write_sfm(2,fen);

}

write_sfm(4,miao);

}

}

jishuaihu

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