DS12C887电子时钟(附程序)

1、下面附有实物图和引脚接法图及程序时钟实物图LCD1602引脚连接P1.0 P1.1 P1.2 P0.0P0.7DS12C887引脚连接(打叉的表示不接)蜂鸣器引脚连接 按键引脚连接 P1.3 P3.4P3.5 P3.6 P3.7源程序#include<reg52.h>#include<intrins.h>#define uint unsigned int#define uchar unsigned charsbit lcdrs=P10;sbit rw=P11;sbit lcden=P12;sbit s1=P34; /功能键sbit s2=P35; /增大键sbit s3

2、=P36; /减小键sbit s4=P37; /闹铃查看键sbit beep=P13;/蜂鸣器sbit dscs=P17;sbit dsas=P16;sbit dsrw=P15;sbit dsds=P14;sbit dsirq=P33; /中断bit flag1,flag_ri;/定义标志位 flag1设置闹铃uchar count,s1num,flag,t0_num;char miao,shi,fen,year,month,day,week,amiao,afen,ashi;char code table=" 20 - - " / 20 - - uchar code tab

3、le1=" : : " / : : void write_ds(uchar,uchar); uchar read_ds(uchar);void set_time();void read_alarm();void set_alarm(uchar,uchar,uchar); void delayms(uint z)/延时毫秒的程序uint x,y;for(x=z;x>0;x-)for(y=112;y>0;y-);void di()beep=0;delayms(100);beep=1;void write_cmd(uchar cmd)lcden=0;lcdrs=0;P

4、0=cmd;_nop_();lcden=1;delayms(1);lcden=0; _nop_();void write_dat(uchar dat)lcden=0;lcdrs=1;P0=dat; _nop_();lcden=1;delayms(1);lcden=0;_nop_();void lcdint()lcden=0;write_cmd(0x38); / 显示模式设置write_cmd(0x0c); /开显示，不显示光标，不闪烁write_cmd(0x06); /写一个字符后地址加1，屏幕不移write_cmd(0x01);/清屏delayms(1);void init()uchar n

5、um;rw=0;EA=1;/开总中断EX1=1;/开外部中断1IT1=1;/外部中断下降沿触发flag1=0; t0_num=0;s1num=0;week=1;/*write_ds(0x0A,0x20);/打开振荡器write_ds(0x0B,0x26);/设置24小时模式，数据二进制格式，开启闹铃中断set_time();/设置上电默认时间,调试的时候用 */lcdint();write_cmd(0x80);for(num=0;num<15;num+) write_dat(tablenum);write_cmd(0xc0);for(num=0;num<11;num+)write_

6、dat(table1num);void write_sfm(uchar add,char date) /写时间,2位一起写char shi,ge;shi=date/10;ge=date%10;write_cmd(0xc0+add);write_dat(0x30+shi);write_dat(0x30+ge);void write_nyr(uchar add,char date)/年月日char shi,ge;shi=date/10;ge=date%10;write_cmd(0x80+add);write_dat(0x30+shi);write_dat(0x30+ge);void write_w

7、eek(char we)/星期write_cmd(0x80+12);switch(we)case 1: write_dat('M');write_dat('O');write_dat('N');break;case 2: write_dat('T');write_dat('U');write_dat('E');break;case 3: write_dat('W');write_dat('E');write_dat('D');break;case 4:

8、 write_dat('T');write_dat('H');write_dat('U');break;case 5: write_dat('F');write_dat('R');write_dat('I');break;case 6: write_dat('S');write_dat('A');write_dat('T');break;case 7: write_dat('S');write_dat('U');writ

9、e_dat('N');break;void keyscan()if(flag_ri=1)if(s1=0)|(s2=0)|(s3=0)|(s4=0)/按任意键取消闹钟报警delayms(5);if(s1=0)|(s2=0)|(s3=0)|(s4=0)while(!(s1&&s2&&s3&&s4);di();flag_ri=0;if(s1=0) /如果功能按键1按下delayms(5); /去抖动if(s1=0) while(!s1); /等待松手s1num+;/记下次数di(); /蜂鸣器响if(flag1=1) /设置闹铃为1时才

10、对s1num调整，只调秒，分，时if(s1num>3)s1num=1;flag=1;/在调整时间时标志位flag为1，不进行正常操作switch(s1num)case 1:write_cmd(0xc0+10); write_cmd(0x0f);break; /按一下秒钟 指针显示闪烁case 2:write_cmd(0xc0+7); break;case 3:write_cmd(0xc0+4); break;case 4:write_cmd(0x80+12); break;case 5:write_cmd(0x80+9); break;case 6:write_cmd(0x80+6);

11、break;case 7:write_cmd(0x80+3); break;default: /用default可以解决s1num跑飞s1num=0;write_cmd(0x0c); /按了8次关闪烁，flag=0,退出调整，显示时间flag=0;write_ds(0,miao); /将调整后的时间写入ds12c887write_ds(2,fen);write_ds(4,shi);write_ds(6,week);write_ds(7,day);write_ds(8,month);write_ds(9,year);break;if(s1num!=0)/S1有按下过，检测S2，S3if(s2=0

12、)/如果按键2按下执行加delayms(5);if(s2=0)while(!s2);di();switch(s1num)case 1:miao+; if(miao>59)miao=0;write_sfm(10,miao);write_cmd(0x80+0x40+10); break; case 2:fen+; if(fen>59)fen=0;write_sfm(7,fen);write_cmd(0x80+0x40+7); break; case 3:shi+; if(shi>23)shi=0;write_sfm(4,shi);write_cmd(0x80+0x40+4); b

13、reak; case 4:week+; if(week>7)week=1;write_week(week);write_cmd(0x80+12); break; case 5:day+; if(day>31)day=1;write_nyr(9,day);write_cmd(0x80+9); break; case 6:month+; if(month>12)month=1;write_nyr(6,month);write_cmd(0x80+6); break; case 7:year+; if(year>99)year=0;write_nyr(3,year);write

14、_cmd(0x80+3); break; if(s3=0)delayms(5);if(s3=0)while(!s3);di();switch(s1num)case 1:miao-; if(miao<0)miao=59;write_sfm(10,miao);write_cmd(0x80+0x40+10); break; case 2:fen-; if(fen<0)fen=59;write_sfm(7,fen);write_cmd(0x80+0x40+7); break; case 3:shi-; if(shi<0)shi=23;write_sfm(4,shi);write_cm

15、d(0x80+0x40+4); break; case 4:week-; if(week<1)week=7;write_week(week);write_cmd(0x80+12); break; case 5:day-; if(day<1)day=31;write_nyr(9,day);write_cmd(0x80+9); break; case 6:month-; if(month<1)month=12;write_nyr(6,month);write_cmd(0x80+6); break; case 7:year-; if(year<0)year=99;write_

16、nyr(3,year);write_cmd(0x80+3); break; if(s4=0)delayms(5);if(s4=0)while(!s4);di(); flag1=flag1;/闹铃调好后再按一次键返回if(flag1=0) /退出闹钟设置保存数值flag=0; /启动时间显示write_cmd(0x80+0x40);write_dat(' ');write_dat(' ');write_cmd(0x0c); /清屏下，否则光标乱跳 （闹铃调时间时）write_ds(1,miao);write_ds(3,fen);write_ds(5,shi);el

17、se /设置闹钟read_alarm(); /读原始数据miao=amiao;fen=afen;shi=ashi;write_cmd(0xc0);write_dat('R');write_dat('i');write_cmd(0x80+0x40);write_sfm(4,ashi);write_sfm(7,afen);write_sfm(10,amiao);void write_ds(uchar add,uchar date)/写12c887函数dscs=0;dsas=1;dsds=1;dsrw=1;P0=add; /写地址dsas=0;dsrw=0;P0=da

18、te; /写数据dsrw=1;dsas=1;dscs=1;uchar read_ds(uchar add) /读12c887uchar ds_date;dsas=1;dsds=1;dsrw=1;dscs=0;P0=add;dsas=0;dsds=0;P0=0xff;ds_date=P0;dsds=1;dsas=1;dscs=1;return ds_date;/*void set_time() /初始化write_ds(0,0);/秒write_ds(1,10);/秒闹铃write_ds(2,34);/分钟write_ds(3,34);/分钟闹铃write_ds(4,15);/小时write_ds(5,15);/