两天的成果， /*************************************/#include<reg52.h>#define uint unsigned int#define uchar unsigned charuchar year,month,day,week,hours,minutes,seconds;uchar flag1302,cnt;/*************************************控制按键*************************************/sbit K1=P1^0;sbit K2=P1^2;sbit K3=P1^4;/*************************************控制LCD液晶显示*************************************/sbit lcdwrite=P2^5;sbit lcddatecommand=P2^6;sbit lcde=P2^7;/*************************************控制DS1302时钟*************************************/sbit SCK=P3^6;sbit RST=P3^5;sbit SDA=P3^4;/*************************************延时子函数*************************************/void delay(uint z){uint x,y;for(x=z;x>0;x--){ for(y=0;y<=112;y++){}}}/*************************************LCD写命令函数*************************************/void write_command(uchar command){lcddatecommand=0; //开启写命令lcdwrite=0; //只写不读P0=command;delay(1);lcde=1; //形成使能E高脉冲delay(1);lcde=0; //使能E拉低}/*************************************LCD写数据函数*************************************/void write_date(uchar date){lcddatecommand=1; //开启写数据lcdwrite=0; //只写不读P0=date;delay(1);lcde=1; //形成使能E高脉冲delay(1);lcde=0; //使能E拉低}/*************************************LCD屏幕初始化*************************************/void lcdInit(){lcde=0;write_command(0x38);//设置16*2显示，5*7点阵，8位数据接口write_command(0x0c);//设置开显示，不显示光标write_command(0x06);// 写一个字符后地址指针加1write_command(0x01);//显示清0，数据指针清0}/*************************************DS1302写字节函数*************************************/void write_1302byte(uchar date){uchar i;for(i=0;i<8;i++){SCK=0;SDA=date&0x01;date=date>>1;SCK=1;//将电平置为已知状态} }/*************************************DS1302读字节函数*************************************/uchar read_1302byte(uchar address){uchar i,temp;temp=0x00;RST=0;delay(1);SCK=0;delay(1);RST=1;delay(1);write_1302byte(address);for(i=0;i<8;i++){if(SDA==1){temp=temp|0x80; //每次传输低字节}temp=temp>>1;SCK=1;delay(1);SCK=0;delay(1);}return temp;}/*************************************往DS1302中写数据*************************************/void write_1302(uchar address,uchar date){RST=0;delay(1);SCK=0;delay(1);RST=1;delay(1);write_1302byte(address);write_1302byte(date);RST=0;}/*************************************往DS1302中读取数据*************************************/uchar read_1302(uchar address){ uchar date;RST=0;SCK=0;RST=1;write_1302byte(address);date=read_1302byte(address);SCK=1;RST=0;return date;}/*************************************初始化时间*************************************/void Init_1302(){write_1302(0x8e,0x00); //写入不保护指令 write_1302(0x80,(14/10)<<4|(14%10));//14秒钟write_1302(0x82,(7/10)<<4|(7%10)); //7分钟write_1302(0x84,(3/10)<<4|(3%10)); //3小时write_1302(0x86,(6/10)<<4|(6%10)); //6日write_1302(0x88,(6/10)<<4|(6%10)); //6月write_1302(0x8A,(4/10)<<4|(4%10)); //周四write_1302(0x8C,(13/10)<<4|(13%10));//13年write_1302(0x90,0xa5); //打开充电功能，选择2K电阻充电方式write_1302(0x8e,0x80); //写保护}/************************************* 时钟显示*************************************/void DisplayHours(uchar hours){uchar shi,ge;shi=hours/10;ge=hours%10;write_command(0x06);write_command(0x80+0x40);write_date(shi+48);write_date(ge+48);write_date(':');}/*************************************分钟显示*************************************/void DisplayMinutes(uchar minutes){uchar shi,ge;shi=minutes/10;ge=minutes%10;write_command(0x06);write_command(0x80+0x43);write_date(shi+48);write_date(ge+48);write_date(':');}/*************************************秒钟显示*************************************/void DisplaySeconds(uchar seconds){uchar shi,ge;shi=seconds/10;ge=seconds%10;write_command(0x06);write_command(0x80+0x46);write_date(shi+48);write_date(ge+48);}/*************************************年份显示*************************************/void DisplayYear(uchar years){uchar shi,ge;shi=years/10;ge=years%10;write_command(0x06);write_command(0x80+0x00);write_date(shi+48);write_date(ge+48);write_date('-');}/*************************************月份显示*************************************/void DisplayMonth(uchar month){uchar shi,ge;shi=month/10;ge=month%10;write_command(0x06);write_command(0x80+0x03);write_date(shi+48);write_date(ge+48);write_date('-');}/*************************************日显示*************************************/void DisplayDay(uchar day){uchar shi,ge;shi=day/10;ge=day%10;write_command(0x06);write_command(0x80+0x06);write_date(shi+48);write_date(ge+48);}/*************************************礼拜显示*************************************/void DisplayWeek(uchar week){uchar i;i=week;write_command(0x06);write_command(0x80+0x09);switch(i){case 1:write_date('M');write_date('O');write_date('N'); break;case 2:write_date('T');write_date('H');write_date('E'); break;case 3:write_date('W');write_date('E');write_date('D'); break;case 4:write_date('T');write_date('H');write_date('U'); break;case 5:write_date('F');write_date('R');write_date('I'); break;case 6:write_date('S');write_date('A');write_date('T'); break;case 7:write_date('S');write_date('U');write_date('N'); break;}}/*************************************读取日期*************************************/void read_date(){uchar ReadValue; ReadValue = read_1302(0x81); seconds=((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F); ReadValue = read_1302(0x83); minutes=((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F); ReadValue = read_1302(0x85); hours=((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F); ReadValue = read_1302(0x87); day=((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F); ReadValue = read_1302(0x89); month=((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F); ReadValue = read_1302(0x8d); year=((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F); ReadValue=read_1302(0x8b); week=ReadValue&0x07; DisplaySeconds(seconds); DisplayMinutes(minutes); DisplayHours(hours); DisplayDay(day); DisplayMonth(month); DisplayYear(year); DisplayWeek(week); }/*************************************修改日期*************************************/void change(){uchar temp,nian,yue,ri,zhou,shi,fen,miao;if(K1==0){delay(5);if(K1==0)//证明功能键确实按下{cnt++;//计数器，计算按下的次数write_1302(0x8e,0x00);//关闭写保护}}/*******************************************修改年份 *******************************************/if(cnt==1){temp=read_1302(0x8d);nian=((temp&0x70)>>4)*10+(temp&0x0F);if(K2==0){delay(5);if(K2==0)//K2键实现加{while(!K2);delay(5);while(!K2);//确保K2键松开nian++;if(nian>=100){nian=0;}write_1302(0x8e,0x00);write_1302(0x8c,(nian/10)<<4|(nian%10));DisplayYear(nian);write_1302(0x8e,0x80);}}if(K3==0){delay(5);if(K3==0)//K3键实现减{while(!K3);delay(5);while(!K3);//确保K3键松开nian--;if(nian==-1){nian=99;}write_1302(0x8e,0x00);write_1302(0x8c,(nian/10)<<4|(nian%10));DisplayYear(nian);write_1302(0x8e,0x80);}}}/*******************************************修改月份 *******************************************/if(cnt==2){temp=read_1302(0x89);yue=((temp&0x70)>>4)*10+(temp&0x0F);if(K2==0){delay(5);if(K2==0)//K2键实现加{while(!K2);delay(5);while(!K2);//确保K2键松开yue++;if(yue>=12){yue=1;}write_1302(0x8e,0x00);write_1302(0x88,(yue/10)<<4|(yue%10));DisplayMonth(yue);write_1302(0x8e,0x80);}}if(K3==0){delay(5);if(K3==0)//K3键实现减{while(!K3);delay(5);while(!K3);//确保K3键松开yue--;if(yue==0){yue=12;}write_1302(0x8e,0x00);write_1302(0x88,(yue/10)<<4|(yue%10));DisplayMonth(yue);write_1302(0x8e,0x80);}}}/*******************************************修改天数 *******************************************/if(cnt==3){temp=read_1302(0x87);ri=((temp&0x70)>>4)*10+(temp&0x0F);if(K2==0){