#include<reg52.h> //头文件#include<intrins.h>#define uchar unsigned char //宏定义#define uint unsigned int//位定义sbit rs=P2^5; //液晶位定义sbit lcden=P2^7;sbit s1=P2^0; //时间功能切换按键sbit s2=P2^1; //按键加sbit s3=P2^3; //按键减sbit s4=P2^4; //闹钟功能切换键sbit rst=P1^5; //ds1302引脚定义sbit io=P1^6;sbit sclk=P1^7;sbit beep=P3^0; //蜂鸣器uchar num,count,shi,fen,miao,s1num,s2num,year,month,day,week,flag,flag1,year1,month1,day1,week1,shi1,fen1,miao1,year2,month2,day2,week2,shi2,fen2,miao2,year5,month5,day5,week5,shi5,fen5,miao5,wk,ashi,afen; //参数定义uchar code table[]="20 - - "; //液晶固定显示uchar code table1[]=" : : 00:00";/*uchar time_dat[7]={12,1,6,6,12,59,59}; //年周月日时分秒uchar write_add[7]={0x8c,0x8a,0x88,0x86,0x84,0x82,0x80};uchar read_add[7]={0x8d,0x8b,0x89,0x87,0x85,0x83,0x81};*/void write_com(uchar com); //液晶写指令函数void write_data(uchar date); //液晶写数据函数void write_ds1302(uchar add,uchar dat); //ds1302芯片写指令函数void set_rtc(); //ds1302时间设置函数void time_pros(); //ds1302进制转换函数void read_rtc(); //ds1302读时间函数void alarm(); //闹钟函数void delay(uint z) //延时函数{uint x,y;for(x=z;x>0;x--)for(y=110;y>0;y--);}void init() //初始化{lcden=0;flag=0;flag1=0;write_com(0x38);write_com(0x0c);write_com(0x06);write_com(0x01);write_com(0x80); //液晶固定显示，第一行 for(num=0;num<14;num++){write_data(table[num]);delay(5);}write_com(0x80+0x40); //液晶显示第二行for(num=0;num<20;num++){write_data(table1[num]);delay(5);}}void write_com(uchar com)//1602液晶写指令{rs=0;P0=com;delay(5);lcden=1;delay(5);lcden=0;}void write_data(uchar date)//1602液晶写写数据{rs=1;P0=date;delay(5);lcden=1;delay(5);lcden=0;}void write_sfm(uchar add,uchar date)//时分秒{uchar shi3,ge;shi3=date/10;ge=date%10;write_com(0x80+0x40+add);write_data(0x30+shi3);write_data(0x30+ge);}void write_nyr(uchar ad,uchar date)//年月日{uchar shi4,ge2;shi4=date/10;ge2=date%10;write_com(0x80+ad);write_data(0x30+shi4);write_data(0x30+ge2);}void write_week(uchar wk) //星期按西方星期设置星期天为第一天{write_com(0x80+11);switch(wk){case 1: write_data('S');delay(5);write_data('U');delay(5);write_data('N');break;case 2: write_data('M');delay(5);write_data('O');delay(5);write_data('N');break;case 3: write_data('T');delay(5);write_data('U'); delay(5);write_data('E'); break;case 4: write_data('W'); delay(5);write_data('E'); delay(5);write_data('D'); break;case 5: write_data('T'); delay(5);write_data('H'); delay(5);write_data('U'); break;case 6: write_data('F'); delay(5);write_data('R'); delay(5);write_data('T'); break;case 7: write_data('S'); delay(5);write_data('A'); delay(5);write_data('T'); break;}}void keyscan() //按键函数{if(s1==0){delay(5);if(s1==0){write_com(0x0f);s1num++; //记录按键次数flag=1;flag1=1;while(!s1);switch(s1num)//光标闪烁点定位{case 1:write_com(0x80+0x40+6); //秒break;case 2:write_com(0x80+0x40+3); //分break;case 3:write_com(0x80+0x40+0); //时break;case 4:write_com(0x80+11); //星期break;case 5:write_com(0x80+8); //日break;case 6:write_com(0x80+5); //月break;case 7:write_com(0x80+2); //年break;case 8:s1num=0;write_com(0x0c);//设置开显示光标不显示关闭时间设置set_rtc();flag=0;break;}}}if(s1num!=0) //按键加减{if(s2==0) //加按键函数{delay(10);if(s2==0){while(!s2);switch(s1num) //根据功能键相应次数做出调节{case 1: miao++; //秒加if(miao==60)miao=0;write_sfm(6,miao);write_com(0x80+0x40+6);break;case 2: fen++; //分加if(fen==60)fen=0;write_sfm(3,fen);write_com(0x80+0x40+3);break;case 3: shi++; //时加if(shi==24)shi=0;write_sfm(0,shi);write_com(0x80+0x40+0);break;case 4: week++; //星期加 if(week==8)week=1;write_week(week);write_com(0x80+11);break;case 5: day++; //日加if(day==32)day=1;write_nyr(8,day);write_com(0x80+8);break;case 6: month++; //月加if(month==13)month=1;write_nyr(5,month);write_com(0x80+5);break;case 7: year++; //年加 if(year==100)year=0;write_nyr(2,year);write_com(0x80+2);break;}}}if(s3==0) //减按键函数同上 {delay(10);if(s3==0){while(!s3);switch(s1num) //根据功能键相应次数做出调节{case 1: miao--;if(miao==-1)miao=59;write_sfm(6,miao);write_com(0x80+0x40+6);break;case 2: fen--;if(fen==-1)fen=59;write_sfm(3,fen);write_com(0x80+0x40+3);break;case 3: shi--;if(shi==-1)shi=23;write_sfm(0,shi);write_com(0x80+0x40+0); break;case 4: week--;if(week==-1)week=7;write_week(week);write_com(0x80+11);break;case 5: day--;if(day==-1)day=31;write_nyr(8,day);write_com(0x80+8);break;case 6: month--;if(month==-1)month=12;write_nyr(5,month);write_com(0x80+5);break;case 7: year--;if(year==-1)year=99;write_nyr(2,year);write_com(0x80+2);break;}}}}if(s4==0) //闹钟按键{delay(5);if(s4==0){write_com(0x0f); //光标闪烁s2num++; //记录按键次数flag=1;while(!s4);switch(s2num)//光标闪烁点定位{case 1:write_com(0x80+0x40+13); //分break;case 2:write_com(0x80+0x40+10); //时break;case 3:write_com(0x0c); //关闭闹钟设置 flag=0;s2num=0;break;}}}if(s2num!=0) //闹钟设置{if(s2==0) //闹钟加{delay(10);if(s2==0){while(!s2);switch(s2num) //根据功能键相应次数做出调节{case 1: afen++;if(afen==60)afen=0;write_sfm(13,afen);write_com(0x80+0x40+13);break;case 2: ashi++;if(ashi==24)ashi=0;write_sfm(10,ashi);write_com(0x80+0x40+10); break;}}}if(s3==0) //闹钟减{delay(10);if(s3==0){while(!s3);switch(s2num) //根据功能键相应次数做出调节 {case 1: afen--;if(afen==-1)afen=59;write_sfm(13,afen);write_com(0x80+0x40+13); break;case 2: ashi--;if(ashi==-1)ashi=23;write_sfm(10,ashi);write_com(0x80+0x40+10); break;}}}}}void wirte_ds1302_byte(uchar dat) //ds1302字节写{uchar i;for(i=0;i<8;i++){sclk=0;io=dat&0x01;dat=dat>>1;sclk=1;}}void write_ds1302(uchar add,uchar dat) //ds1302写函数{rst=0;_nop_();// 空操作sclk=0;_nop_();rst=1;_nop_();wirte_ds1302_byte(add);wirte_ds1302_byte(dat);rst=0;io=1;sclk=1;}uchar read_ds1302(uchar add) //ds1302读函数{uchar i,value;rst=0;_nop_();// 空操作sclk=0;_nop_();rst=1;_nop_();wirte_ds1302_byte(add);for(i=0;i<8;i++){value=value>>1;sclk=0;if(io){value=value|0x80;}sclk=1;}rst=0;_nop_();// 空操作sclk=0;_nop_();io=1;return value;}void set_rtc() //ds1302时间设置{write_ds1302(0x8e,0x00); //关写保护year1=year/10; //转换为十六进制year=year%10;year=year+year1*16;write_ds1302(0x8c,year);week1=week/10;week=week%10;week=week+week1*16;write_ds1302(0x8a,week);month1=month/10;month=month%10;month=month+month1*16;write_ds1302(0x88,month);day1=day/10;day=day%10;day=day+day1*16;write_ds1302(0x86,day);shi1=shi/10;shi=shi%10;shi=shi+shi1*16;write_ds1302(0x84,shi);fen1=fen/10;fen=fen%10;fen=fen+fen1*16;write_ds1302(0x82,fen);miao1=miao/10;miao=miao%10;miao=miao+miao1*16;write_ds1302(0x80,miao);write_ds1302(0x8e,0x80); //开写保护}void read_rtc() //从ds1302中读时间{year2=read_ds1302(0x8d);week2=read_ds1302(0x8b);month2=read_ds1302(0x89);day2=read_ds1302(0x87);shi2=read_ds1302(0x85);fen2=read_ds1302(0x83);miao2=read_ds1302(0x81);}void time_pros() //从ds1302中读出的时间转换为十进制{year5=year2/16;year2=year2%16;year2=year2+year5*10;month5=month2/16;month2=month2%16;month2=month2+month5*10;day5=day2/16;day2=day2%16;day2=day2+day5*10;shi5=shi2/16;shi2=shi2%16;shi2=shi2+shi5*10;fen5=fen2/16;fen2=fen2%16;fen2=fen2+fen5*10;miao5=miao2/16;miao2=miao2%16;miao2=miao2+miao5*10;}void display() //显示函数{write_sfm(6,miao2);write_com(0x80+0x40+6);write_sfm(3,fen2);write_com(0x80+0x40+3);write_sfm(0,shi2);write_com(0x80+0x40+0);write_week(week2);write_com(0x80+11);write_nyr(8,day2);write_com(0x80+8);write_nyr(5,month2);write_com(0x80+5);write_nyr(2,year2);write_com(0x80+2);if((ashi==shi2)&&(afen==fen2)){alarm();}}void alarm() // 闹钟{beep=0;delay(1000);beep=1;}void main() //主函数{init(); //初始化 while(1){keyscan(); //按键函数if(flag==0){keyscan();read_rtc();time_pros();display();}}}。