分时区、12小时制和24小时制多功能电子时钟

1、/*多功能电子时钟单片机：stc89c52系列或其兼容型号 外部晶振：12mhz功能：1、支持多个时钟同时运行（clockcount） 2、每个时钟都具备12小时模式和24小时模式 3、12小时模式时，具备am/pm的led指示功能 4、每个时钟都具备闹铃功能 5、每个时钟的时间和闹铃时间都可设置 （自适应12小时模式和24小时模式）日期：2012.7.17（佳木斯大学65周年校庆）*/ #include reg52.h#define fosc(12)/系统晶振，以mhz为单位#define msecond(10)/定时器的定时时间，以毫秒为单位#define clockcount(3)/时钟

2、个数#define vtl0(65536-msecond*fosc/12*1000)%256)/计算定时器初值#define vth0(65536-msecond*fosc/12*1000)/256)#define segport(p0)/显示器段码口#define weiport(p1)/显示器位码口#define flashhour(1)/小时闪烁判断值#define flashminute(2)/分钟闪烁判断值#define flashsecond(3)/秒闪烁判断值#define flashall(4)/所有位闪烁判断值#define flashnone(5)/不闪烁判断值#defin

3、e flashfreq(10)/小时、分、秒闪烁时的频率，值越大越慢#define alarmtime(30000)/自动撤销闹铃前的等待时间，值越大时间越长#define alarmon(1)/打开闹铃判断值#define alarmoff(2)/关闭闹铃判断值#define timemode12(1)/12小时模式#define timemode24(2)/24小时模式#define am(1)/代表上午#define pm(2)/代表下午#define key1(1)/1号按键的键值#define key2(2)/2号按键的键值#define key3(3)/3号按键的键值#define

4、 nokey(4)/无按键时的返回键值#define beepon(1)/打开蜂鸣器的电平#define beepoff(0)/关闭蜂鸣器的电平#define ledon(1)/点亮led时的电平#define ledoff(0)/熄灭led时的电平#define beepfreq(10)/蜂鸣器的发声频率，值越大越慢#define keyspeed(30)/按键的响应速度，值越大响应越慢#define keywaittime(1000)/无按键时，自动退出前的等待时间，值越大时间越长sbit key1=p20;/1号按键，以下程序设定为“功能键”sbit key2=p21;/2号按键，以下程

5、序设定为“增键”sbit key3=p22;/3号按键，以下程序设定为“减键”sbit beep=p27;/闹铃驱动口线sbit amled=p23;/am指示灯sbit pmled=p24;/pm指示灯typedef struct/定义一个时钟结构体类型tclock unsigned char hour;unsigned char minute;unsigned char second;unsigned int msecond; /毫秒unsigned char timemode;/表示时钟模式，是12小时模式还是24小时模式unsigned char amorpm;/表示当前是上午还是下午

6、unsigned char alarmopen;/是否打开闹铃的控制位unsigned char alarmhour;unsigned char alarmminute;unsigned char alarmflag; /闹铃时间到标志unsigned int alarmtime;/为自动退出闹铃状态服务unsigned char alarmamorpm;/表示闹铃是设置在上午还是下午 tclock;unsigned char code segcode=/共阴极管 dp g f e d c b a 0x3f,0x06,0x5b,0x4f,0x66, 0x6d,0x7d,0x07,0x7f,0x

7、6f,0x00;tclock clockclockcount,*pclock;/时钟数组和时钟指针unsigned char keywaitflag=0,adjusttimeflag=0;/用于函数间协调的两个标志unsigned char whichclock=0;/存放当前所选时钟的下标unsigned char dispbuf6;/显示缓冲区unsigned char keywaittime=0;/为无按键时的自动退出服务/通用的软件延时函数/x要延时的时间，范围0255void xdelay(unsigned char x) unsigned char y; for(;x0;x-) f

8、or(y=30;y0;y-);/将所选时钟的数据填充到显示缓冲区/pclock指向时钟的指针void filldispbuf(tclock *pclock) dispbuf0=segcodepclock-hour/10; dispbuf1=segcodepclock-hour%10; dispbuf2=segcodepclock-minute/10; dispbuf3=segcodepclock-minute%10; dispbuf4=segcodepclock-second/10; dispbuf5=segcodepclock-second%10;/将所选时钟的闹铃时间填充到显示缓冲区/pc

9、lock指向时钟的指针void fillalarmtodispbuf(tclock *pclock) dispbuf0=segcode10; dispbuf1=segcode10; dispbuf2=segcodepclock-alarmhour/10; dispbuf3=segcodepclock-alarmhour%10; dispbuf4=segcodepclock-alarmminute/10; dispbuf5=segcodepclock-alarmminute%10;/显示函数，用于显示时间，可闪烁显示/flashwhich指定闪烁的部分，可取值flashhour、/flashmi

10、nute、flashsecond、flashall、flashnonevoid display(unsigned char flashwhich) unsigned char weicode,i; static unsigned char nstate=0,flashcount=flashfreq; weicode=0xfe; for(i=0;i0) segport=dispbufi;else flashcount=flashfreq; nstate=1; break; case 1: /offif(-flashcount0) segport=dispbuf10;else flashcount

11、=flashfreq; nstate=0; break; default: nstate=0; else segport=dispbufi;break;case flashminute:if (i=2)|(i=3) switch(nstate) case 0: /onif(-flashcount0) segport=dispbufi;else flashcount=flashfreq; nstate=1; break; case 1: /offif(-flashcount0) segport=dispbuf10;else flashcount=flashfreq; nstate=0; brea

12、k; default: nstate=0; else segport=dispbufi;break;case flashsecond:if (i=4)|(i=5) switch(nstate) case 0: /onif(-flashcount0) segport=dispbufi;else flashcount=flashfreq; nstate=1; break; case 1: /offif(-flashcount0) segport=dispbuf10;else flashcount=flashfreq; nstate=0; break; default: nstate=0; else

13、 segport=dispbufi;break;case flashall:switch(nstate) case 0: /onif(-flashcount0) segport=dispbufi;else flashcount=flashfreq; nstate=1; break; case 1: /offif(-flashcount0) segport=dispbuf10;else flashcount=flashfreq; nstate=0; break; default: nstate=0;break;default: segport=dispbufi;flashcount=flashf

14、req; weiport=weicode; weicode=1; weicode|=1; xdelay(10); /显示指定时钟的时钟下标（编号）/aclock时钟下标void displayclock(unsigned char xclock) dispbuf0=0x39;/c dispbuf1=0x38;/l dispbuf2=0x3f;/o dispbuf3=0x39;/c dispbuf4=0x00;/熄灭 dispbuf5=segcodexclock;/时钟编号 display(flashnone);/用于显示所选时钟闹铃的开关状态/onoff开关状态，可取值为alarmon、ala

15、rmoffvoid displayonoffalarm(unsigned char onoroff) dispbuf0=0x77;/a dispbuf1=0x38;/l dispbuf2=0x77;/a if (onoroff=alarmon) dispbuf3=0x00;/熄灭 dispbuf4=0x5c;/o dispbuf5=0x54;/n else dispbuf3=0x5c;/o dispbuf4=0x71;/f dispbuf5=0x71;/f display(flashnone); /用于显示时钟的时间模式（12小时制或24小时制）/xtimemode时间模式，可取值为timem

16、ode12、timemode24void displaytimemode(unsigned char xtimemode) if (xtimemode=timemode12) dispbuf0=segcode1; /1 dispbuf1=segcode2; /2 else dispbuf0=segcode2; /2 dispbuf1=segcode4; /4 dispbuf2=0x74; /h dispbuf3=0x5c; /o dispbuf4=0x1c; /u dispbuf5=0x70; /r display(flashnone);/键盘函数，返回值为按键的键值/返回值包括key1,ke

17、y2,key3,nokeyunsigned char key(void) static unsigned char xcount=0; if (+xcountalarmopen=alarmoff; pclock-timemode=timemode24; amled=ledoff; pmled=ledoff;void main(void) unsigned char nstate=0,akey,temp=0; init(); while(1) akey=key(); switch(nstate) case 0:/时钟正常运行filldispbuf(clock+whichclock);displa

18、y(flashnone);if(clockwhichclock.alarmflag)/驱动闹钟蜂鸣器 if(+temp=beepfreq) temp=0; beep=1; if(akey!=nokey) clockwhichclock.alarmflag=0;temp=0;beep=beepoff; if (akey=key1) keywaittime=0; nstate=1; break; case 1: /选择时钟keywaitflag=1;/等待按键时间内无按键，自动返回运行状态if (keywaittime=keywaittime) nstate=0; keywaitflag=0; k

19、eywaittime=0;if (akey=key1) keywaittime=0; clockwhichclock.msecond=0; nstate=2; if (akey=key2) keywaittime=0; if(whichclock0) whichclock-;displayclock(whichclock); break; case 2:/选择时间模式（12小时制或24小时制）keywaitflag=1;/等待按键时间内无按键，自动返回运行状态if (keywaittime=keywaittime) nstate=0; keywaitflag=0; keywaittime=0;

20、if (akey=key1) keywaittime=0; adjusttimeflag=1; nstate=3;if (clockwhichclock.timemode=timemode12) displaytimemode(timemode12); if (clockwhichclock.amorpm=pm)pmled=ledon; amled=ledoff; else pmled=ledoff; amled=ledon; if (akey=key2)|(akey=key3) keywaittime=0;clockwhichclock.timemode=timemode24;clockwh

21、ichclock.hour+=12; else displaytimemode(timemode24); amled=ledoff; pmled=ledoff; if (akey=key2)|(akey=key3) clockwhichclock.timemode=timemode12;if (clockwhichclock.hour=12) keywaittime=0; clockwhichclock.hour-=12; clockwhichclock.amorpm=pm; else clockwhichclock.amorpm=am; break; case 3:/调整所选时钟的小时key

22、waitflag=1;/等待按键时间内无按键，自动返回运行状态if (keywaittime=keywaittime) nstate=0; keywaitflag=0; keywaittime=0;if (akey=key1) keywaittime=0; nstate=4; if (akey=key2) keywaittime=0; if (clockwhichclock.timemode=timemode12) if (clockwhichclock.hour12) clockwhichclock.hour+;else if (clockwhichclock.amorpm=pm) cloc

23、kwhichclock.amorpm=am;clockwhichclock.hour=0; else clockwhichclock.amorpm=pm;clockwhichclock.hour=0; else if (clockwhichclock.hour0) clockwhichclock.hour-; filldispbuf(clock+whichclock);display(flashhour); break; case 4:/调整所选时钟的分钟keywaitflag=1;/等待按键时间内无按键，自动返回运行状态if (keywaittime=keywaittime) nstate=

24、0; keywaitflag=0; keywaittime=0;if (akey=key1) keywaittime=0; nstate=5; if (akey=key2) keywaittime=0; if(clockwhichclock.minute0) clockwhichclock.minute-; filldispbuf(clock+whichclock);display(flashminute); break; case 5:/调整所选时钟的秒keywaitflag=1;/等待按键时间内无按键，自动返回运行状态if (keywaittime=keywaittime) nstate=

25、0; keywaitflag=0; keywaittime=0;if (akey=key1) keywaittime=0; adjusttimeflag=0; nstate=6; if (akey=key2) keywaittime=0; if(clockwhichclock.second0) clockwhichclock.second-; filldispbuf(clock+whichclock);display(flashsecond); break; case 6:/开关闹铃功能keywaitflag=1;/等待按键时间内无按键，自动返回运行状态if (keywaittime=keyw

26、aittime) nstate=0; keywaitflag=0; keywaittime=0;if (akey=key1) keywaittime=0; if(clockwhichclock.alarmopen) nstate=7; else nstate=0; if(clockwhichclock.alarmopen) displayonoffalarm(alarmon); if(akey=key2)|(akey=key3) keywaittime=0; clockwhichclock.alarmopen=alarmoff; else displayonoffalarm(alarmoff)

27、; if(akey=key2)|(akey=key3) keywaittime=0; clockwhichclock.alarmopen=alarmon; break; case 7:/调整闹铃小时keywaitflag=1;/等待按键时间内无按键，自动返回运行状态if (keywaittime=keywaittime) nstate=0; keywaitflag=0; keywaittime=0;if (akey=key1) keywaittime=0; nstate=8; if (akey=key2) keywaittime=0; if (clockwhichclock.timemode=

28、timemode12) if (clockwhichclock.alarmhour12) clockwhichclock.alarmhour+;else if (clockwhichclock.alarmamorpm=pm) clockwhichclock.alarmamorpm=am;clockwhichclock.alarmhour=0; else clockwhichclock.alarmamorpm=pm;clockwhichclock.alarmhour=0; else if(clockwhichclock.alarmhour0) clockwhichclock.alarmhour-

29、; fillalarmtodispbuf(clock+whichclock);display(flashminute);break; case 8:/调整闹铃分钟keywaitflag=1;/等待按键时间内无按键，自动返回运行状态if (keywaittime=keywaittime) nstate=0; keywaitflag=0; keywaittime=0;if (akey=key1) keywaittime=0; nstate=0; if (akey=key2) keywaittime=0; if(clockwhichclock.alarmminute0) clockwhichclock.alarmminute-; fillalarmtodispbuf(clock+whichclock);display(flashsecond); break; default: nstate=0; /t0定时器10ms中断服务函数void t0int(void) interr