TX1C的ds12c887程序

#include<reg52.h>
#define uchar unsigned char 
#define uint unsigned int
sbit dula=P2^6;
sbit wela=P2^7;
sbit rs=P3^5;
sbit lcden=P3^4;
sbit s1=P3^1;
sbit s2=P3^2;
sbit s3=P3^3;
sbit s4=P3^6;
sbit rd=P3^7;
sbit beep=P2^3;
sbit dscs=P1^4;
sbit dsas=P1^5;
sbit dsrw=P1^6;
sbit dsds=P1^7;
sbit dsirq=P3^3;
uchar count,s1num,flag,flag1;
char miao,shi,fen,amiao,ashi,afen;
uchar week,year,month,day,flag_ri;
uchar code table[]=" 2007-07-30 MON";
uchar code table1[]="      :  :  ";
void write_ds(uchar,uchar);
void set_alarm(uchar,uchar,uchar);
uchar read_ds(uchar);
void set_time();
void read_alarm();

void delay(uint z)//延时函数
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
void di() //蜂鸣器报警声音
{
beep=0;
delay(100);
beep=1;
}
void write_com(uchar com)
{//写液晶命令函数
rs=0;
lcden=0;
P0=com;
delay(3);
lcden=1;
delay(3);
lcden=0;
}
void write_date(uchar date)
{//写液晶数据函数
rs=1;
lcden=0;
P0=date;
delay(3);
lcden=1;
delay(3);