51单片机的24c02电子时钟程序和电路图

1、#include<reg52.h>#include<intrins.h>/52库文件/1us延时库文件这是一个基于51, 24C02的时钟教程，程序已经在 protues中仿真，仿真图在下方！ ！ 这个程序由1602显示，通过开发板测试了，还有结合了24c02pdf, 24c02时序图，有了这些24c02时序序就没问题了！下面的有详细的程序解说。主要的还有就是些按键程序，都比较简单的血顶猎鹰 2011-4-13LS1P23 J -SOUNDER程序如下，有注释002.c#define uint unsigned int宏定义#define uchar unsigned

2、char#include"24c02.h" sbit lcdrs=P2A4; sbit lcdrw=P2A5; sbit lcden=P2A6; sbit s1=P3A0;sbit s2=P3A1;sbit s3=P3A2;sbit beep=P2A3; uchar count,s1num; char miao,shi,fen;/包含24c02头文件液晶的控制角三个调时钟的按键蜂鸣器uchar code table="2011-04-09 SAT "void delayms(uint z)uint x,y;for(x=z;x>0;x-) for(y

3、=112;y>0;y-);void di()beep=0;delayms(100);beep=1;void write_cmd(uchar cmd)lcden=0;lcdrs=0;lcdrw=0;P0=cmd;_nop_();lcden=1;delayms(1);lcden=0;_nop_();void write_dat(uchar dat)lcden=0;lcdrs=1;P0=dat;_nop_();lcden=1;delayms(1);lcden=0;_nop_();void lcdint()lcden=0;write_cmd(0x38);write_cmd(0x0c);write

4、_cmd(0x06);write_cmd(0x01);/蜂鸣器的响/液晶写命令程序/延时毫秒的程序/液晶写数据程序/液晶初始化程序delayms(1);void write_sfm(uchar s,uchar f,uchar m)/数据在液晶显示uchar ss,sg,fs,fg,ms,mg;ss=s/10;sg=s%10;fs=f/10;fg=f%10;ms=m/10;mg=m%10;write_cmd(0xc0+4);write_dat(0x30+ss);write_dat(0x30+sg);write_cmd(0xc0+7);write_dat(0x30+fs);write_dat(0x

5、30+fg);write_cmd(0xc0+10);write_dat(0x30+ms);write_dat(0x30+mg);void keyscan()/ 如果功能按键 1 按下/去抖动if(s1=0)delayms(5);if(s1=0) /等待松手/主要还是记下次数/蜂鸣器响/按一下秒钟while(!s1);s1num+;di();if(s1num=1)TR0=0;write_cmd(0xc0+10); / 指针显示闪烁 write_cmd(0x0f);if(s1num=2)write_cmd(0xc0+7);if(s1num=3)write_cmd(0xc0+4);if(s1num=

6、4)s1num=0; count=0;write_cmd(0x0c);TR0=1;if(s1num!=0)/如果按键2 按下执行加if(s2=0)delayms(5);if(s2=0)while(!s2);/对应调整分秒时di();if(s1num=1) miao+;if(miao=60)miao=0;write_sfm(shi,fen,miao);write_cmd(0xc0+10);write_add(1,miao);if(s1num=2)fen+;if(fen=60)fen=0;write_sfm(shi,fen,miao);write_cmd(0xc0+7);write_add(2,f

7、en);if(s1num=3)shi+;if(shi=60)shi=0;write_sfm(shi,fen,miao);write_cmd(0xc0+4);write_add(3,shi);if(s3=0)delayms(5);if(s3=0)while(!s3);di();if(s1num=1)miao-;if(miao=-1)miao=59; write_sfm(shi,fen,miao); write_cmd(0xc0+10);write_add(1,miao);if(s1num=2)fen-;if(fen=-1)fen=59;write_sfm(shi,fen,miao);write_

8、cmd(0xc0+7); write_add(2,fen);if(s1num=3)shi-;if(shi=-1)shi=23;write_sfm(shi,fen,miao);write_cmd(0xc0+4); write_add(3,shi);void main()uchar num;lcdint();wp=0;s1num=0;count=0;shi=0;fen=0;miao=0;write_cmd(0x80+1);for(num=0;num<15;num+)write_dat(tablenum);write_cmd(0xc0+6);write_dat(':');wri

9、te_cmd(0xc0+9);write_dat(':');miao=read_add(1);fen=read_add(2);shi=read_add(3);write_sfm(shi,fen,miao);TMOD=0x01;TH0=(65536-50000)/256;TL0=(65536-50000)%256;EA=1;ET0=1;TR0=1;wp=0;while(1)keyscan();if(count=20) /等待1scount=0;miao+;if(miao=60) /进位程序miao=0;fen+;if(fen=60) fen=0;shi+;if(shi=24)sh

10、i=0;write_sfm(shi,fen,miao);write_add(3,shi);write_sfm(shi,fen,miao);write_add(2,fen);write_sfm(shi,fen,miao);write_add(1,miao);void timer0() interrupt 1TH0=(65536-50000)/256;TL0=(65536-50000)%256;count+;24c02.hsbit wp=P1A0;sbit sda=P1A2;sbit scl=P1A1;void delay1() /延时5us 左右;void start()sda=1; / 对应时

11、序图将SDA 拉高delay1(); /延时scl=1;/ 将 CL 拉高delay1();/延时sda=0;/ 造成一个下降沿启动信号delay1();void stop()sda=0; / SDA 拉低delay1();scl=1; /SCL 拉高delay1();sda=1; / 造成上升沿终止信号delay1();void respons()unsigned char i;scl=1; /将 SCL 拉高delay1();while(sda=1)&&(i<250) i+;/等待SDA 低电平如果时间超了就退出scl=0;/将 SCL 拉低delay1();void

12、 write_byte(unsigned char date)unsigned char i,temp;temp=date;/写数据for(i=0;i<8;i+)/循环输入temp=temp<<1;/左移一位进CY ，再放入 sda 中scl=0;delay1();sda=CY;delay1();scl=1;delay1();scl=0;delay1();sda=1;delay1();unsigned char read_byte() / 读一个字节unsigned char i,k;k=0;scl=0;delay1();sda=1;delay1();for(i=0;i<

13、;8;i+) 读出 sda 放在 k 中scl=1;delay1();k=(k<<1)|sda;scl=0;delay1();delay1(); return k;void write_add(unsigned char address,unsigned char date)start();write_byte(0xae);/这里电路图中接的A0A1A2 为高，故为 0xaerespons();write_byte(address); / 这一部分按照时序图看就行了 respons();write_byte(date);respons();Stop()； unsigned char

14、 read_add(unsigned char address)unsigned char date;start();write_byte(0xae);respons();write_byte(address);respons();start();write_byte(0xaf); 按时序图操作respons();date=read_byte();stop();return date;把两个文件放在同一文件夹下就行了已通过实物验证可以用写一个字节的时序流程图对应上面的 void write_add(unsigned char address,unsigned char date)FIGURE 5 1： BYTE WRITESDA