基于51單片機(jī)定時器的1602液晶顯示器時鐘顯示(帶年月日)

1、#include#define uchar unsigned char#define uint unsigned intuchar a,count,S1num,xqnum;char yue,ri,shi,fen,miao;int nian;sbit lcdrs=P25;sbit lcdrw=P24;sbit lcden=P23;sbit S1=P30;/定義鍵進(jìn)入設(shè)置sbit S2=P31;/定義鍵增大sbit S3=P32;/定義鍵減小sbit S4=P33;/定義鍵退出設(shè)置uchar code table0=2014-08-13 WED;uchar code table1=00:00:00

2、;uchar code xingqi3=MON,TUE,WED,THU,FRI,SAT,SUN;void delay(uint z)uint x,y;for(x=z;x0;x-)for(y=110;y0;y-);/*1602液晶顯示器模塊sbit lcdrs=P25;sbit lcdrw=P24;sbit lcden=P23;*/void write_com(uchar com)/液晶寫指令lcdrw=0;lcdrs=0;P0=com;delay(5);lcden=1;delay(5);lcden=0;void write_data(uchar dat)/液晶寫數(shù)據(jù)lcdrw=0;lcdrs=

3、1;P0=dat;delay(5);lcden=1;delay(5);lcden=0; /*年月日寫入1602函數(shù)*/void write_sfm(uchar add,uchar dat) /寫時分秒函數(shù)uchar shi,ge;shi=dat/10;ge=dat%10;write_com(0x80+0x40+add);write_data(0x30+shi);write_data(0x30+ge);void write_yr(uchar add,uchar dat) /寫月日函數(shù)uchar shi,ge;shi=dat/10;ge=dat%10;write_com(0x80+add);wri

4、te_data(0x30+shi);write_data(0x30+ge);void write_nian(uchar add,uint dat) /寫年函數(shù)uint qian,bai,shi,ge;qian=dat/1000;bai=dat%1000/100;shi=dat%100/10;ge=dat%10;write_com(0x80+add);write_data(0x30+qian);write_data(0x30+bai);write_data(0x30+shi);write_data(0x30+ge);/*初始化*/void init_lcd() /液晶初始化lcden=0;nia

5、n=2014;yue=8;ri=13;shi=0; /初始shi、fen、miaofen=0;miao=0;write_com(0x38); /設(shè)置16x2顯示，5x7點(diǎn)陣，8位數(shù)據(jù)口write_com(0x0c); /設(shè)置開顯示，不顯示光標(biāo)write_com(0x06); /寫一個字符后地址指針加1write_com(0x01); /顯示清0，數(shù)據(jù)指針清0 void init()/初始化函數(shù)init_lcd(); /液晶初始化write_com(0x80); /設(shè)置顯示初始坐標(biāo)for(a=0;a14;a+) /顯示年月日初始值write_data(table0a);delay(5);writ

6、e_com(0x80+0x40); /設(shè)置顯示初始坐標(biāo)for(a=0;a8;a+)/顯示時分秒初始值write_data(table1a);delay(5);write_nian(0,nian);write_sfm(6,miao); /分別將shi、fen、miao送去液晶顯示write_sfm(3,fen);write_sfm(0,shi);count=0;xqnum=0;S1num=0; /初始化全局變量countTMOD=0x01; /設(shè)置定時器0工作模式1TH0=(65535-50000)/256; /定時器裝初始值TL0=(65535-50000)%256;EA=1;/開總中斷ET0

7、=1;/開定時器0中斷TR0=1;/啟動定時器0 /*獨(dú)立鍵盤sbit S1=P30;/定義鍵進(jìn)入設(shè)置sbit S2=P31;/定義鍵增大sbit S3=P32;/定義鍵減小sbit S4=P33;/定義鍵退出設(shè)置獨(dú)立鍵盤已接地*/void keyscan()if(S1=0)delay(5);/確認(rèn)定義鍵被按下if(S1=0)S1num+;/定義鍵S1按下次數(shù)記錄while(!S1);/釋放按鍵確認(rèn)if(S1num=1)/S1按下一次時TR0=0;/關(guān)閉定時器write_com(0xc0+7);/光標(biāo)定位到秒位置write_com(0x0f);/光標(biāo)閃爍if(S1num=2) /S1按下兩次時

8、write_com(0xc0+4); /光標(biāo)定位到分位置if(S1num=3) /S1按下三次時write_com(0xc0+1); /光標(biāo)定位到時位置if(S1num=4) /S1按下四次時write_com(0x80+13); /光標(biāo)定位到星期位置if(S1num=5) /S1按下五次時write_com(0x80+9); /光標(biāo)定位到日位置if(S1num=6) /S1按下六次時write_com(0x80+6); /光標(biāo)定位到月位置if(S1num=7) /S1按下七次時write_com(0x80+3); /光標(biāo)定位到年位置if(S1num=8) /S1按下八次時S1num=0; /

9、S1記錄按鍵次數(shù)清零TR0=1; /開啟定時器write_com(0x0c); /取消光標(biāo)閃爍if(S1num!=0) /只有定義鍵按下后S2、S3、S4才有效if(S2=0)delay(5);/防抖if(S2=0) /確認(rèn)按鍵被按下while(!S2);/釋放按鍵確認(rèn)if(S1num=1)/S1按下一次時miao+;/調(diào)整秒加1if(miao=60)/滿60清零miao=0;write_sfm(6,miao); /每調(diào)節(jié)一次送液晶顯示一次write_com(0x80+0x40+6); /顯示位置重新回到調(diào)節(jié)處if(S1num=2) /S1按下兩次時fen+;/調(diào)整分加1if(fen=60)f

10、en=0;write_sfm(3,fen);write_com(0x80+0x40+3);if(S1num=3) /S1按下三次時shi+; /調(diào)整時加1if(shi=24)shi=0;write_com(0x80+0x40);write_sfm(0,shi);if(S1num=4) /星期加調(diào)整xqnum+;if(xqnum=7)xqnum=0;write_com(0x80+0x0b);for(a=0;a3;a+)write_data(xingqixqnuma);delay(5);if(S1num=5)/日加調(diào)整ri+;if(yue=2)if(nian%400=0)if(ri=30)ri=1

11、;if(nian%400!=0)if(ri=29)ri=1;else if(yue=8)if(yue%2=0)if(ri=32)ri=1;else if(yue%2!=0)if(ri=31)ri=1;write_yr(8,ri);if(S1num=6)/月加調(diào)整yue+;if(yue=13)yue=1;write_yr(5,yue); if(S1num=7) /年加調(diào)整nian+;if(nian=2019)nian=2014;write_nian(0,nian);if(S3=0)delay(5);if(S3=0) /確認(rèn)按鍵被按下while(!S3);if(S1num=1) miao-; /調(diào)

12、整秒減1if(miao=-1) /減到00后再減重新設(shè)置為59miao=59;write_sfm(6,miao);write_com(0x80+0x40+6);if(S1num=2)fen-; /調(diào)整分減1if(fen=-1)fen=59;write_sfm(3,fen);write_com(0x80+0x40+3);if(S1num=3)shi-;/調(diào)整時減1if(shi=-1)shi=23;write_sfm(0,shi);write_com(0x80+0x40);if(S1num=4)xqnum-;/調(diào)整星期減一if(xqnum=-1)xqnum=6;write_com(0x80+0x0

13、b);for(a=0;a3;a+)write_data(xingqixqnuma);delay(5);if(S1num=5) /調(diào)整日ri-;if(yue=2)if(nian%400=0)if(ri=0)ri=29;if(nian%400!=0)if(ri=0)ri=28;else if(yue=8)if(yue%2=0)if(ri=0)ri=31;else if(yue%2!=0)if(ri=0)ri=30;write_yr(8,ri); if(S1num=6) /調(diào)整月yue-;if(yue=0)yue=12;write_yr(5,yue);if(S1num=7) /調(diào)整年nian-;if

14、(nian=2013)nian=2018;write_nian(0,nian);if(S4=0) /退出設(shè)置、開啟中斷delay(5);if(S4=0)S1num=0;TR0=1;write_com(0x0c);/*定時器0*/void timer0() interrupt 1 /定時器0中斷服務(wù)程序TH0=(65535-50000)/256; /重裝定時器初始值TL0=(65535-50000)%256;count+; /中斷次數(shù)累加if(count=20) /20次50毫秒即一秒count=0;miao+;if(miao=60) /秒加到60時分進(jìn)位miao=0;fen+;if(fen=6

15、0) /分加到60時時進(jìn)位fen=0;shi+;if(shi=24)/時加到24時清0shi=0;xqnum+;ri+;if(yue=2)/如果是二月if(nian%400=0) /閏年判斷if(ri=30)ri=1;yue+;write_yr(5,yue);if(nian%400!=0) /平年判斷if(ri=29)ri=1;yue+;write_yr(5,yue);else if(yue=8) /八月到12月if(yue%2=0)/偶數(shù)月（除二月）if(ri=32) ri=1;yue+;if(yue=13) /如果判斷月份為12月，則加一后重新定義月份為1yue=1;nian+;write_nian(0,nian);write_yr(5,yue);else if(yue%2!=0) /奇數(shù)月if(ri=31)ri=1;yue+;write_yr(5,y