lcd液晶显示电子时钟LCDliquidcrystaldisplayelectronicclock

1、lcd1602液晶显示电子时钟（lcd1602 liquid crystal display electronic clock）lcd1602 liquid crystal display electronic clockheroes and heroes, happy new year!i learn c language soon today to write a clock program, found when debugging, manual adjustment is completely normal, but in the automatic time, date and w

2、eek is inconsistent with the facts, please help me, thank you, the following source program#include <at89x52.h>#define uchar unsigned char#define uint unsigned intsbit rs=p20;sbit rw=p21;sbit lcden=p22;sbit s1=p15;sbit s2=p16;sbit s3=p17;uchar, count, s1num;char, miao, shi, fen, w, r, y, a;uch

3、ar code table= "2009-01-29 w4""uchar code table1= "00:00:00""void delay (uint z) / / delay proceduresuint, x, y;for (x=z; x>0; x-)for (y=110; y>0; y-);void write_com (uchar com) / / write commands to the 1602 lcdrw=0;rs=0;lcden=0;p0=com;delay (5);lcden=1;delay (5)

4、;lcden=0;void write_date (uchar date) / / write data to the 1602 lcdrw=0;rs=1;lcden=0;p0=date;delay (5);lcden=1;delay (5);lcden=0;void (init) / / initializeuchar num;lcden=0;write_com (0x38); / / set the display modewrite_com (0x0c); / / open displaywrite_com (0x06); / / when writing time automatic

5、plus 1write_com (0x01); / / screen displaywrite_com (0x80); / / pointer data setfor (num=0; num<15; num+) / / set the first line digital positionwrite_date (tablenum); / / the first line of digital displaydelay (5);write_com (0x80+0x40); / / set the next display second linesfor (num=0; num<12;

6、 num+) / / set the second row positionwrite_date (table1num); / / digital display second linesdelay (5);tmod=0x01; / / set the timer function 1th0= (65536-50000 /256); / / timer initial loadingtl0= (65536-50000)%256;ea=1; / / open interruptet0=1; / / t0 timer interrupttr0=1; / / start timervoid writ

7、e_sfm (uchar add, uchar date) when the separation / /uchar shi, ge; / / set a bit, ten bit variableshi=date/10; / / from tenge=date%10; / / from awrite_com (0x80+0x40+add); / / locationwrite_date (0x30+shi); / / the ten bit datawrite_date (0x30+ge); / / a bit datavoid write_r (uchar, add, uchar, dat

8、e)uchar ge; / / set a bitge=date;write_com (0x80+add); / / locationwrite_date (0x30+ge); / / a bit datavoid write_ny (uchar add, uchar date) when the separation / /uchar shi, ge; / / set a bit, ten bit variableshi=date/10; / / from tenge=date%10; / / from awrite_com (0x80+add); / / locationwrite_dat

9、e (0x30+shi); / / the ten bit datawrite_date (0x30+ge); / / a bit datavoid (keyscan) / / keyscanif (s1=0) / / if the s1 key is presseddelay (5); / / xiaodouif (s1=0) / / again confirming whether a key is pressed, the execution of programs1num+;while (s1!); / / determine whether the s1 key up,if lift

10、ed, enter the set stateif (s1num=1) / / if this number is 1, the implementation of programtr0=0; / / shutdown timerwrite_com (0x80+0x40+10); / / set the cursor in the second positionwrite_com (0x0f); / / set the light and flashing displayif (s1num=2) / / if this number is 2, the implementation of pr

11、ogramwrite_com (0x80+0x40+7); / / set the cursor in the positionif (s1num=3) / / if this number is 3, the implementation of programwrite_com (0x80+0x40+4); / / set the cursor in the positionif (s1num=4) / / if this number is 4, the implementation of programwrite_com (0x80+14); / / set the cursor pos

12、ition in the weekif (s1num=5) / / if this number is 5, the implementation of programwrite_com (0x80+9); / / set the cursor position on the dateif (s1num=6) / / if this number is 6, the implementation of programwrite_com (0x80+6); / / set the cursor position in the monthif (s1num=7) / / if this numbe

13、r is 7, the implementation of programwrite_com (0x80+3); / / set the cursor position in the yearif (s1num=8) / / if this number is 8, exit the setting states1num=0; / / the number zerowrite_com (0x0c); / / close cursortr0=1; / / start timer, travel timeif (s1num! =0) / / if this number is not 0, the

14、n enter the adjustment plus or minus keyif (s2=0) to confirm whether a key is pressed.delay (5); / / xiaodouif (s2=0) / / again confirming whether a key is pressedwhile (s2!); / / determine whether the s1 key is lifted, if lifted, enter the set state numberif (s1num=1) / / determine the set position

15、 is in secondsmiao+;if (miao=60) is applied to the 60 / /miao=0; / / resetwrite_sfm (10, miao); / / refreshwrite_com (0x80+0x40+10);if (s1num=2)fen+;if (fen=60)fen=0;write_sfm (7, fen);write_com (0x80+0x40+7);if (s1num=3)shi+;if (shi=24)shi=0;write_sfm (4, shi);write_com (0x80+0x40+4);if (s1num=4) /

16、 / determine the set position is in the weekw+;if (w=7) is applied to the 7 / /w=0; / / zhou qinglingwrite_r (14, w); / / refreshwrite_com (0x80+14);if (s1num=5) / / determine the set position is in the dayr+;if (r=32) is applied to the 31 / /r=1; / / day 1write_ny (9, r); / / refreshwrite_com (0x80

17、+9);if (s1num=6) / / determine the set position is in juney+;if (y=13) is applied to the 12 / /y=1; / / seigetsuwrite_ny (6, y); / / refreshwrite_com (0x80+6);if (s1num=7) / / determine the set position is in the yeara+;if (a=100) is applied to the 99 / /a=0; / / year zerowrite_ny (3, a); / / refres

18、hwrite_com (0x80+3);if (s3=0)delay (5);if (s3=0)while (. s3);if (s1num=1)miao-;if (miao=-1)miao=59;write_sfm (10, miao);write_com (0x80+0x40+10);if (s1num=2)fen-;if (fen=-1)fen=59;write_sfm (7, fen);write_com (0x80+0x40+7);if (s1num=3)shi-;if (shi=-1)shi=23;write_sfm (4, shi);write_com (0x80+0x40+4)

19、;if (s1num=4)w-;if (w=-1)w=6;write_r (14, w); / / refreshwrite_com (0x80+14);if (s1num=5) / / determine the set position is in the dayr-;if (r=0)r=31;write_ny (9, r); / / refreshwrite_com (0x80+9);if (s1num=6) / / determine the set position is in juney-;if (y=0)y = 12;write _ ny (6 / refresh the display, y).write _ com (0x80 + 6);if (s1num = = 7)sub -.if (a = = 0)a =