嵌入式电子闹钟时钟课程设计

1、#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=P25; /液晶位定义 sbit lcden=P27;sbit s1=P20; /时间功能切换按键sbit s2=P21; /按键加sbit s3=P23; /按键减sbit s4=P24; /闹钟功能切换键sbit rst=P15; /ds1302引脚定义sbit io=P16;sbit sclk=P17;sbit beep=P30; /蜂鸣器ucha

2、r 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 t

3、ime_dat7=12,1,6,6,12,59,59; /年周月日时分秒uchar write_add7=0x8c,0x8a,0x88,0x86,0x84,0x82,0x80;uchar read_add7=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

4、 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;

5、num<14;num+) write_data(tablenum); delay(5); write_com(0x80+0x40); /液晶显示第二行 for(num=0;num<20;num+) write_data(table1num); 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; de

6、lay(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_d

7、ata(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'

8、); 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'); de

9、lay(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);

10、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:wri

11、te_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_c

12、om(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(d

13、ay=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

14、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

15、_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 de

16、lay(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

17、); 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(a

18、fen=-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(u

19、char 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

20、;i+) value=value>>1; sclk=0; if(io) value=value|0x80; sclk=1; rst=0; _nop_();/ 空操作 sclk=0; _nop_(); sclk=1; 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%1

21、0; 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*

22、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 flag1=0; 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