单片机实现万年历程序.doc

51单片机实现万年历 利用AT89S52单片机的P0口来和另外几个口来控制1602液晶的显示和P1口还有其它口来控制ds12887时钟芯片。设置四个按键，1个定义为时间设置功能键，一个定义为闹钟设置功能键，另外两个用来调节时间的增减。 原理图： pcb图： 源程序： #include #define uint unsigned int #define uchar unsigned char sbit beep=P20;/蜂鸣器控制口 sbit timeadd=P21;/调节时间加 sbit timesub=P22;/调节时间减 sbit timeclk=P23;/闹钟设定键 sbit timefun=P24;/时间设定键 sbit lcdrs=P25;/液晶的命令和数据控制口 sbit ledrw=P26;/液晶的写数据口 sbit lcden=P27;/液晶显示模块的使能端 sbit timeds=P33;/时钟芯片地址闸 sbit timerw=P34;/时钟芯片读写 sbit timeas=P35;/时钟芯片地址闸 sbit timeen=P36;/时钟芯片片选 uchar code table=20- week ; uchar code table1= :;/要显示的字符串 char num,shi,fen,miao,nian=2000,yue,ri,week,numfun,anumfun,flag,flag1; uchar leap; void delay(uint x) uchar i,j; for(i=x;i0;i-) for(j=110;j0;j-); void didi() beep=0; delay(1000); beep=1; delay(1000); void write_com(uchar com) lcdrs=0; P0=com; delay(5); lcden=1; delay(20); lcden=0; void write_date(uchar date) lcdrs=1; P0=date; delay(5); lcden=1; delay(20); lcden=0; void write_sfm(uchar add,uchar date) uchar shi,ge; shi=date/10; ge=date%10; write_com(0x80+0x40+add); write_date(0x30+shi); write_date(0x30+ge); void write_nyr(uchar add,uchar date) uchar shi,ge; shi=date/10; ge=date%10; write_com(0x80+add); write_date(0x30+shi); write_date(0x30+ge); void write_zhou(uchar add,uchar date) write_com(0x80+add); write_date(0x30+date); void write_ds(uchar add,uchar date) timeen=0; timeas=1; timeds=1; timerw=1; P1=add; timeas=0; timerw=0; P1=date; timerw=1; timeas=1; timeen=1; uchar read_ds(uchar add) uchar ds_date; timeas=1; timeds=1; timerw=1; timeen=0; P1=add; timeas=0; timeds=0; P1=0xff; ds_date=P1; timeds=1; timeas=1; timeen=1; return ds_date; void keyscan() if(flag1=1)/用来关闭闹钟铃声 if(timeadd=0) delay(5); if(timeadd=0) while(!timeadd=0); flag1=0; if(timesub=0) delay(5); if(timesub=0) while(!timesub=0); flag1=0; if(timefun=0) delay(5); if(timefun=0) while(!timefun); flag=1; numfun+; if(numfun=1) write_com(0x80+0x40+0x0a); write_com(0x0f); if(numfun=2) write_com(0x80+0x40+0x07); write_com(0x0f); if(numfun=3) write_com(0x80+0x40+0x04); write_com(0x0f); if(numfun=4) write_com(0x80+0x0f); write_com(0x0f); if(numfun=5) write_com(0x80+0x09); write_com(0x0f); if(numfun=6) write_com(0x80+0x06); write_com(0x0f); if(numfun=7) write_com(0x80+0x03); write_com(0x0f); if(numfun=8) numfun=0; flag=0; if(numfun!=0) if(timeadd=0) delay(5); while(!timeadd); if(numfun=1) miao+; if(miao=60) miao=0; write_sfm(9,miao); write_com(0x80+0x40+9); write_ds(0,miao); if(numfun=2) fen+; if(fen=60) fen=0; write_sfm(6,fen); write_com(0x80+0x40+6); write_ds(2,fen); if(numfun=3) shi+; if(shi=24) shi=0; write_sfm(3,shi); write_com(0x80+0x40+3); write_ds(4,shi); if(numfun=4) week+; if(week=8) week=1; write_zhou(0x0f,week); write_com(0x80+0x0f); write_ds(6,week); if(numfun=5) if(nian=0) switch(yue) case 1:ri+;if(ri=32) ri=1;break; case 2:ri+;if(ri=30) ri=1;break; case 3:ri+;if(ri=32) ri=1;break; case 4:ri+;if(ri=31) ri=1;break; case 5:ri+;if(ri=32) ri=1;break; case 6:ri+;if(ri=31) ri=1;break; case 7:ri+;if(ri=32) ri=1;break; case 8:ri+;if(ri=32) ri=1;break; case 9:ri+;if(ri=31) ri=1;break; case 10:ri+;if(ri=32) ri=1;break; case 11:ri+;if(ri=31) ri=1;break; case 12:ri+;if(ri=32) ri=1;break; else if(leap&yue=2) ri+; if(ri=30) ri=1; else if(yue=2&leap=0) ri+; if(ri=29) ri=1; else switch(yue) case 1:ri+;if(ri=32) ri=1;break; case 3:ri+;if(ri=32) ri=1;break; case 4:ri+;if(ri=31) ri=1;break; case 5:ri+;if(ri=32) ri=1;break; case 6:ri+;if(ri=31) ri=1;break; case 7:ri+;if(ri=32) ri=1;break; case 8:ri+;if(ri=32) ri=1;break; case 9:ri+;if(ri=31) ri=1;break; case 10:ri+;if(ri=32) ri=1;break; case 11:ri+;if(ri=31) ri=1;break; case 12:ri+;if(ri=32) ri=1;break; write_nyr(8,ri); write_com(0x80+0x08); write_ds(7,ri); if(numfun=6) yue+; if(yue=13) yue=0; write_nyr(5,yue); write_com(0x80+0x05); write_ds(8,yue); if(numfun=7) nian+; if(nian=100) nian=0; leap=nian%4=0&nian%100!=0; write_nyr(2,nian); write_com(0x80+2); write_ds(9,nian); if(timesub=0) delay(5); while(!timesub); if(numfun=1) miao-; if(miao=-1) miao=59; write_sfm(9,miao); write_com(0x80+0x40+9); write_ds(0,miao); if(numfun=2) fen-; if(fen=-1) fen=59; write_sfm(6,fen); write_com(0x80+0x40+6); write_ds(2,fen); if(numfun=3) shi-; if(shi=-1) shi=23; write_sfm(3,shi); write_com(0x80+0x40+3); write_ds(4,shi); if(numfun=4) week-; if(week=0) week=7; write_zhou(0x0f,week); write_com(0x80+0x0f); write_ds(6,week); if(numfun=5) if(nian=0) switch(yue) case 1:ri-;if(ri=0) ri=31;break; case 2:ri-;if(ri=0) ri=29;break; case 3:ri-;if(ri=0) ri=31;break; case 4:ri-;if(ri=0) ri=30;break; case 5:ri-;if(ri=0) ri=31;break; case 6:ri-;if(ri=0) ri=30;break; case 7:ri-;if(ri=0) ri=31;break; case 8:ri-;if(ri=0) ri=31;break; case 9:ri-;if(ri=0) ri=30;break; case 10:ri-;if(ri=0) ri=31;break; case 11:ri-;if(ri=0) ri=30;break; case 12:ri-;if(ri=0) ri=31;break; else if(leap&yue=2) ri-; if(ri=0) ri=29; else if(yue=2&leap=0) ri-; if(ri=0) ri=28; else switch(yue) case 1:ri-;if(ri=0) ri=31;break; case 3:ri-;if(ri=0) ri=31;break; case 4:ri-;if(ri=0) ri=30;break; case 5:ri-;if(ri=0) ri=31;break; case 6:ri-;if(ri=0) ri=30;break; case 7:ri-;if(ri=0) ri=31;break; case 8:ri-;if(ri=0) ri=31;break; case 9:ri-;if(ri=0) ri=30;break; case 10:ri-;if(ri=0) ri=31;break; case 11:ri-;if(ri=0) ri=30;break; case 12:ri-;if(ri=0) ri=31;break; write_nyr(8,ri); write_com(0x80+0x08); write_ds(7,ri); if(numfun=6) yue-; if(yue=-1) yue=12; write_nyr(5,yue); write_com(0x80+0x05); write_ds(8,yue); if(numfun=7) nian-; if(nian=-1) nian=99; leap=nian%4=0&nian%100!=0; write_nyr(2,nian); write_com(0x80+2); write_ds(9,nian); void set_alarm() uchar ashi,afen,amiao; if(timeclk=0)/判断是否按下闹钟设定键 delay(5);/延时消抖 if(timeclk=0) while(!timeclk); anumfun+;/按键次数加1 if(anumfun=1) flag=1; write_com(0x80+0x40+0x0a); write_com(0x0f); if(anumfun=2) flag=1; write_com(0x80+0x40+0x07); write_com(0x0f); if(anumfun=3) flag=1; write_com(0x80+0x40+0x04); write_com(0x0f); if(anumfun=4) flag=0; anumfun=0; if(anumfun!=0) if(timeadd=0)/如果加功能键按下 delay(5); while(!timeadd); if(anumfun=1) /设定秒 amiao+; if(amiao=60) amiao=0; write_sfm(9,amiao); write_com(0x80+0x40+9); write_ds(1,amiao); if(anumfun=2) afen+; if(afen=60) afen=0; write_sfm(6,afen); write_com(0x80+0x40+6); write_ds(3,afen); if(anumfun=3) ashi+; if(ashi=24) ashi=0; write_sfm(3,ashi); write_com(0x80+0x40+3); write_ds(5,ashi); if(anumfun!=0) if(timesub=0) delay(5); while(!timesub); if(anumfun=1) amiao-; if(amiao=-1) amiao=59; write_sfm(9,amiao); write_com(0x80+0x40+9); write_ds(1,amiao); if(anumfun=2) afen-; if(afen=-1) afen=59; write_sfm(6,afen); write_com(0x80+0x40+6); write_ds(3,afen); if(anumfun=3) ashi-; if(ashi=-1) ashi=23; write_sfm(3,ashi); write_com(0x80+0x40+3); write_ds(5,ashi); void init() EA=1;/开总中断 EX0=1;/开外部中断0 IT0=1;/设定触发方式为负跳变沿有效 lcden=0;/选通液晶显示屏 ledrw=0;/设定液晶显示屏的读写方式为读 write_com(0x38);/设置液晶显示模式为16*2显示，5*7点阵，8位数据接口 write_com