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1、-基于c51功能最全的电子钟程序(lcd1602)-第 19 页功能最全的电子钟【单片机】c51数字时钟（带年月日显示）摘要：本设计以单片机为核心，lcd1602显示。采用独立键盘输入能任意修改当前时间日期和设定闹钟时间。具有显示年月日（区分闰年和二月），闹钟报警和整点报时功能主程序：* lcd1602电子钟 *# include # include lcd16024.hsbit key1 = P20;/调整sbit key2 = P21;/加1sbit key3 = P22;/减1sbit speaker = P23;/蜂鸣器sbit key4 = P24;/闹钟设计bit cal_year
2、 = 1;/进入判断闰年标志位bit leap_year;/闰年标志位bit calculate = 0;/日加一标记bit run = 0;/闹钟标志bit beep = 0;/整点报时标志/uint8 num = 0;/调整是给的脉冲uint8 code str1 = D: ;uint8 code str2 = T: ;uint8 code str3 = Wek;uint8 daystr=2013-07-29 ;/年月日格式uint8 timestr=21:30:59 N; /时分秒格式uint8 daystr1=2013-07-29 ;/闹钟年月日格式uint8 timestr1=21:
3、30:59 N; /闹钟时分秒格式uint8 numweek = 0;/星期加1标记char week = 1;/星期char sec = 53;/秒char min = 50;/分char hour = 23;/时uint8 day = 30;/ 日uint8 month = 9;/月uint16 year = 2013;/年char week1 = 1;/闹钟星期 char sec1 = 58;/闹钟秒char min1 = 50;/闹钟分char hour1 = 23;/闹钟时uint8 day1 = 30;/闹钟日uint8 month1 = 9;/闹钟月uint16 year1 =
4、2013;/闹钟年uint8 WeekData1;/闹钟星期标记uint8 number = 0;/定时uint8 WeekData;/星期标记uint8 speaker_num; /整点报时次数uint8 scan_key(void);/函数声名* 更新LCD时间分离读取 *void TimeChange()/时分秒timestr7 = sec%10+0;timestr6 = sec/10+0;timestr4 = min%10+0;timestr3 = min/10+0;timestr1 = hour%10+0;timestr0 = hour/10+0;/年月日daystr9 = day%
5、10+0;daystr8 = day/10+0;daystr6 = month%10+0;daystr5 = month/10+0;daystr3 = year%10+0;daystr2 = year/10%10+0;daystr1 = year/100%10+0;daystr0 = year/1000+0;/星期WeekData = week+0;* 闹钟更新LCD时间分离读取 *void TimeChange1()/时分秒timestr17 = sec1%10+0;timestr16 = sec1/10+0;timestr14 = min1%10+0;timestr13 = min1/10
6、+0;timestr11 = hour1%10+0;timestr10 = hour1/10+0;/年月日daystr19 = day1%10+0;daystr18 = day1/10+0;daystr16 = month1%10+0;daystr15 = month1/10+0;daystr13 = year1%10+0;daystr12 = year1/10%10+0;daystr11 = year1/100%10+0;daystr10 = year1/1000+0;/星期WeekData1 = week1+0;* 初始化系统定时器0 *void systimer0_init(void)T
7、MOD |=0x01;/设置为1时用或（|）TMOD &=0xfd;/设置为0时用与（&） TH0 = 0xDC; / 定时10ms TL0 = 0x00;EA = 1;ET0=1; TR0=1;EX0 = 1;* 闹钟时间设置 *void naozhong()uint8 number = 1;uint8 a = 0;uint8 b = 0;if(0 = key4)Delay1Ms(5);if(0 = key4)a = 1;LCD_write_command(0xc0+9);LCD_write_command(0x0f);while(!key4);while(a)if(0 = key4)Del
8、ay1Ms(5);if(0 = key4)a = 0;run = run;while(!key4);if(run)timestr9 = Y;elsetimestr9 = N;if(0 = key1)Delay1Ms(5);if(0 = key1)b = 1;while(!key1);while(b)if(0 = key1)Delay1Ms(5);if(0 = key1)number+;if(4 = number)b = 0;while(!key1);if(number = 1)LCD_write_command(0xc0+9);LCD_write_command(0x0f);if(number
9、 = 2)LCD_write_command(0xc0+6);LCD_write_command(0x0f);if(number = 3)LCD_write_command(0xc0+3);LCD_write_command(0x0f);switch(number) case 1: if(0 = key2) /闹钟秒加1的设置Delay1Ms(5);if(0 = key2)sec1+; if(60 = sec1)sec1 = 0;while(!key2);timestr17 = sec1%10+0;timestr16 = sec1/10+0;LCD_write_char(8,1,timestr
10、16);LCD_write_char(9,1,timestr17);LCD_write_command(0xc0+9);if(0 = key3) /闹钟秒减1的设置Delay1Ms(5);if(0 = key3)sec1-; if(sec1 0)sec1 = 59;while(!key3);timestr17 = sec1%10+0;timestr16 = sec1/10+0;LCD_write_char(8,1,timestr16);LCD_write_char(9,1,timestr17);LCD_write_command(0xc0+9); break;case 2: if(0 = ke
11、y2) /闹钟分加1的设置Delay1Ms(5);if(0 = key2)min1+; if(60 = min1)min1 = 0;while(!key2);timestr14 = min1%10+0;timestr13 = min1/10+0;LCD_write_char(5,1,timestr13);LCD_write_char(6,1,timestr14);LCD_write_command(0xc0+6); if(0 = key3) /闹钟分减1的设置Delay1Ms(5);if(0 = key3)min1-; if(min1 0)min1 = 59;while(!key3);time
12、str14 = min1%10+0;timestr13 = min1/10+0;LCD_write_char(5,1,timestr13);LCD_write_char(6,1,timestr14);LCD_write_command(0xc0+6); break;case 3: if(0 = key2) /闹钟时加1的设置Delay1Ms(5);if(0 = key2)hour1+; if(24 = hour1)hour1 = 0;while(!key2);timestr11 = hour1%10+0;timestr10 = hour1/10+0;LCD_write_char(2,1,tim
13、estr10);LCD_write_char(3,1,timestr11);LCD_write_command(0xc0+3); if(0 = key3) /闹钟时减1的设置Delay1Ms(5);if(0 = key3)hour1-; if(hour1 0)hour1 = 23;while(!key3);timestr11 = hour1%10+0;timestr10 = hour1/10+0;LCD_write_char(2,1,timestr10);LCD_write_char(3,1,timestr11);LCD_write_command(0xc0+3); break;case 4:
14、b = 0;LCD_write_command(0x0c);break;LCD_write_command(0x0c);while(!key4);* 判断按键进入时间调整 *uint8 scan_key(void)uint8 number = 1;uint8 a = 0;if(0 = key1)Delay1Ms(5);if(0 = key1)while(!key1);a = 1;LCD_write_command(0xc0+9);LCD_write_command(0x0f);while(a)if(0 = key1)Delay1Ms(5);if(0 = key1)number+;while(!
15、key1);TR0 = 0;if(number = 2)LCD_write_command(0xc0+6);LCD_write_command(0x0f);if(number = 3)LCD_write_command(0xc0+3);LCD_write_command(0x0f);if(number = 4)LCD_write_command(0x80+11);LCD_write_command(0x0f);if(number = 5)LCD_write_command(0x80+8);LCD_write_command(0x0f);if(number = 6)LCD_write_comma
16、nd(0x80+5);LCD_write_command(0x0f);if(number = 7)LCD_write_command(0xc0+14);LCD_write_command(0x0f);if(8 = number)LCD_write_command(0x0c);a = 0;number = 0;switch(number) case 1: if(0 = key2) /秒加1的设置Delay1Ms(5);if(0 = key2)sec+; if(60 = sec)sec = 0;timestr7 = sec%10+0;timestr6 = sec/10+0;LCD_write_ch
17、ar(8,1,timestr6);LCD_write_char(9,1,timestr7);LCD_write_command(0xc0+9);while(!key2); if(0 = key3) /秒减1的设置Delay1Ms(5);if(0 = key3)sec-; if(sec 0)sec = 59;timestr7 = sec%10+0;timestr6 = sec/10+0;LCD_write_char(8,1,timestr6);LCD_write_char(9,1,timestr7);LCD_write_command(0xc0+9);while(!key3); break;ca
18、se 2: if(0 = key2) /分加1的设置Delay1Ms(5);if(0 = key2)min+; if(60 = min)min = 0;timestr4 = min%10+0;timestr3 = min/10+0;LCD_write_char(5,1,timestr3);LCD_write_char(6,1,timestr4);LCD_write_command(0xc0+6);while(!key2); if(0 = key3) /分减1的设置Delay1Ms(5);if(0 = key3)min-; if(min 0)min = 59;timestr4 = min%10+
19、0;timestr3 = min/10+0;LCD_write_char(5,1,timestr3);LCD_write_char(6,1,timestr4);LCD_write_command(0xc0+6);while(!key3);break;case 3: if(0 = key2) /时加1的设置Delay1Ms(5);if(0 = key2)hour+;while(!key2); if(24 = hour)hour = 0;timestr1 = hour%10+0;timestr0 = hour/10+0;LCD_write_char(2,1,timestr0);LCD_write_
20、char(3,1,timestr1);LCD_write_command(0xc0+3);if(0 = key3) /时减1的设置Delay1Ms(5);if(0 = key3)while(!key3); hour-; if(hour 31)day=1; if(month=4|month=6|month=9|month=11) day+; if(day 30)day=1; if(month = 2)cal_year = 1;while(cal_year = 1) leap_year = (year % 4 = 0 & year % 100 != 0)|(year % 400 = 0);cal_
21、year = 0;if(leap_year=1)day+;if(day 30)day=1; elseday+;if(day 29)day=1;calculate = 0;daystr9 = day%10+0;daystr8 = day/10+0;LCD_write_char(10,0,daystr8);LCD_write_char(11,0,daystr9);LCD_write_command(0x80+11); if(0 = key3) /日减1的设置Delay1Ms(5);if(0 = key3)while(!key3);calculate = 1; if(calculate = 1)if
22、(month=1|month=3|month=5|month=7|month=8|month=10|month=12)day-;if(day = 0)day=31; if(month=4|month=6|month=9|month=11) day-; if(day = 0)day=30; if(month = 2) cal_year = 1;while(cal_year = 1) leap_year = (year % 4 = 0 & year % 100 != 0)|(year % 400 = 0);cal_year = 0;if(leap_year=1)day-;if(day = 0)da
23、y=30; elseday-;if(day = 0)day=29;calculate = 0;daystr9 = day%10+0;daystr8 = day/10+0;LCD_write_char(10,0,daystr8);LCD_write_char(11,0,daystr9);LCD_write_command(0x80+11);break;case 5: if(0 = key2) /月加1的设置Delay1Ms(5);if(0 = key2)while(!key2); month+; if(13 = month)month = 1;daystr6 = month%10+0;dayst
24、r5 = month/10+0;LCD_write_char(7,0,daystr5);LCD_write_char(8,0,daystr6);LCD_write_command(0x80+8);if(0 = key3) /月减1的设置Delay1Ms(5);if(0 = key3)while(!key3); month-; if(month = 0)month = 12;daystr6 = month%10+0;daystr5 = month/10+0;LCD_write_char(7,0,daystr5);LCD_write_char(8,0,daystr6);LCD_write_comm
25、and(0x80+8);break;case 6: if(0 = key2) /年加1的设置Delay1Ms(5);if(0 = key2)while(!key2); year+;daystr3 = year%10+0;daystr2 = year/10%10+0;daystr1 = year/100%10+0;daystr0 = year/1000+0;LCD_write_char(2,0,daystr0);LCD_write_char(3,0,daystr1);LCD_write_char(4,0,daystr2);LCD_write_char(5,0,daystr3);LCD_write
26、_command(0x80+5);if (0 = key3) /年减1的设置Delay1Ms(5);if(0 = key3)while(!key3); year-; if(year = 0)year = 2020;daystr3 = year%10+0;daystr2 = year/10%10+0;daystr1 = year/100%10+0;daystr0 = year/1000+0;LCD_write_char(2,0,daystr0);LCD_write_char(3,0,daystr1);LCD_write_char(4,0,daystr2);LCD_write_char(5,0,d
27、aystr3);LCD_write_command(0x80+5);break;case 7: if(0 = key2) /星期加1的设置Delay1Ms(5);if(0 = key2)while(!key2); week+; if(7 = week)week = 0;LCD_write_char(14,1,week+0);LCD_write_command(0xc0+14);if (0 = key3) /星期减1的设置Delay1Ms(5);if(0 = key3)while(!key3); week-; if(week 0)week = 6;LCD_write_char(14,1,week
28、+0);LCD_write_command(0xc0+14);break; case 8:TR0 = 1;break;* 主函数 *void main(void)systimer0_init();LCD_init(); LCD_write_str(0,0,str1);LCD_write_str(0,1,str2);LCD_write_str(13,0,str3);speaker = 0;while (1)TimeChange();scan_key();naozhong();LCD_write_str(2,0,daystr);LCD_write_str(2,1,timestr);LCD_writ
29、e_char(14,1,WeekData);if(1 = run)if(sec=sec1 & month=month1 & hour=hour)speaker_num =30;beep = 1;elsespeaker_num =0;beep = 0;* 定时中断0 *void time_0() interrupt 1TH0 = 0xDC; / 定时10ms TL0 = 0x00;number+;if(number =100) sec+; if(beep) speaker=!speaker; speaker_num-; if(speaker_num = 0) beep=0; speaker = 0; if(sec = 60) sec = 0;min+;if(min = 60)min = 0;hour+; /小时加1speaker_num = hour%12; /蜂鸣器响的次数beep = 1;if(hour = 24)hour = 0;calculate = 1;if(calculate = 1)/判断这个月有多少天if(month=1|month=3|month=5|month=7|month=8|month=10|month=12)day+;if(month=7|month=12)week+;if(7 = week)week = 0;elseif(day 31)if(mo