带温度的LCD1602电子时钟设计.doc

带温度的LCD1602电子时钟设计实验 信息科学与工程学院 专业：信息管理与信息系统1班 姓名： 姓名： 带温度的LCD1602电子时钟设计一、实验目的 学习利用AT89C52进行任务设计，练习使用52单片机内部的 定时器进行计时。学习ds1302时钟芯片和ds18b20温度传感器的使用。学习用模块化编程进行较长程序的编写。二、实验要求 （1）利用lcd1602液晶显示屏作为显示模块，用AT89C52进行控制，用ds18b02测量显示即时温度，温度报警，用ds1302时钟芯片为单片机提供时间数据。具有定时功能。（2）要求时间和定时时间可调，并且在闹铃报时的时候可以用按键进行关闭。并且可以用按键关闭打开定时功能。（3）利用keil uVision4编译软件进行编译。（4）完成实验要求，写出实验报告。三、软件环境 Proteus仿真软件，keil uVision4编译软件四、工作现象本时钟具有显示年月日时分秒星期、温度和温度报警的功能。实验用时钟芯片ds1302来提供秒、分、时、星期、日期、月份和年份的数据，显示部分采用液晶显示模块lcd1602，右上方显示星期，左下角显示温度，右下角显示闹铃的开关状态。用温度传感器ds18b20来测量温度。另外，闹铃用D1(LED-RED)来报时，用D2(LED-RED)做温度报警发声器,闹钟开启用D3来显示。具体各部分功能及操作下面将做介绍：ds1302给单片机at89c52提供年、月、日、时、分、秒、星期，ds18b20采集温度的数据，经单片机的处理送到液晶显示屏lcd1602上显示，实验设置的报警温度为30*c，由于程序有点长，已达到52单片机内存的极限，所以没加调整报警温度的功能，并且在修正时间的过程中只能加，不能减。现在开始介绍具体的操作步骤：key1为调整时间和日期的按键，按下key1键，lcd1602上的光标按时分星期日月年的顺序进行移动，光标所到处按key3键可以调整相应的数据信息。Key2键是闹钟调整键，本实验只提供了设置时间来调整闹钟，不设计年月日和星期，按下key2键，光标在时分之间切换，光标所到处按key3调整相应数据。Key3键用来开关闹钟，当闹铃开启时，lcd1602的右下角会出现“ON”的字样，同时发光二极管D3点亮当闹铃关闭时，lcd1602右下角则出现“OF”的字样。Key4来关闭正在报时的闹钟，即闹钟响是按key4可关闭闹铃。五、实验电路图 六、程序流程图开始初始化LCD及DS1302进入调节模式判断设置按键是否按下将时间/日期写入DS1302读取DS1302中的时间、日期显示时间、日期主程序流程图图定时闪烁S2按下定分闪烁S2按下S3按下时调节S3按下分调节定时数据写入LCD1602调分数据写入LCD1602进入主程序调时数据写入LCD1602S2按下定时流程图年调节S3按下S3按下年数据写入Ds1302月数据写入Ds1302日数据写入Ds1302星期数据写入Ds1302进入主程序S1按下日调节月调节星期调节年闪烁S1按下月闪烁S1按下日闪烁S1按下时闪烁S1按下分闪烁S1按下星期闪烁S3按下时调节S3按下分调节时数据写入Ds1302分数据写入Ds1302S3按下S3按下S1按下时间调节流程图七、程序代码：sbit rs=P20;sbit rw=P21;sbit e=P22;void lcdxcom(uchar com);void lcdinit();void lcdxshuju(uchar dat);void lcdx_time(uchar add,uchar date);void lcdx_day(uchar add,uchar date);#endif液晶lcd1602的.c函数：#include#includelcd1602.h#includedelay.h#includeds1302.hvoid lcdxcom(uchar com) e=0; rs=0; rw=0; P0=com; lcddelay(10);/500us e=1; lcddelay(20); e=0;void lcdinit()lcddelay(300);lcdxcom(0x38);lcddelay(100);lcdxcom(0x38);lcddelay(100);lcdxcom(0x38);lcdxcom(0x38);lcdxcom(0x08);lcdxcom(0x01);1、delay延时函数的.h函数：#ifndef _DELAY_H_#define _DELAY_H_#define uint unsigned int #define uchar unsigned charvoid lcddelay(uint z);void ds18b20delay(uint t);void msdelay(uint z);#endifDelay函数的.c函数：#includedelay.h void lcddelay(uint t) uint j,x; for(x=t;x0;x-) for(j=19;j0;j-);void ds18b20delay(uint t) while(t-);void msdelay(uint z) uint x,y; for(x=z;x0;x-) for(y=110;y0;y-);2、液晶lcd1602的.h函数：#ifndef _LCD1602_H_#define _LCD1602_H_#include#define uint unsigned int #define uchar unsigned charstatic unsigned char shi,fen.miao,day;static unsigned char yue,week,nian;static uchar m,f,s,t,y,n,x;static uchar dshi=0,dfen=0,dmiao=0;static uchar b=0;sbit sck=P10;sbit io=P11;sbit rst=P12;sbit key1=P34;sbit key2=P35;sbit key3=P36;sbit key4=P37;sbit key5=P33;sbit p=P15;sbit a=P13;void pd(void);void zhuan(void);void wr_ds1302byte(uchar dat);void wr_ds1302(uchar add,uchar dat);uchar r_ds1302(uchar add);void setds1302(void);void ds1302r_time(void);uchar panduan(uchar yue,uint nian);void keyscan(void);void setbeep(void);void naozhong(void);void ockey(void);#endif时钟芯片ds1302的.c函数：#includeds1302.h#include#includedelay.h#includelcd1602.huchar timedata=10,6,12,31,23,59,50;/年周月日时分秒uchar xiedizhi=0x8c,0x8a,0x88,0x86,0x84,0x82,0x80;/写地址数组uchar dudizhi=0x8d,0x8b,0x89,0x87,0x85,0x83,0x81;/读地址数组lcdxcom(0x06);lcdxcom(0x0c);void lcdxshuju(uchar dat) e=0; rs=0; rs=1; rw=0; P0=dat; lcddelay(10); e=1; lcddelay(20); e=0; void lcdx_time(uchar add,uchar date)/写时分秒函数uchar shi,ge;shi=date/10;ge=date%10;lcdxcom(0x80+0x40+add);/设置显示位置lcdxshuju(0x30+shi);/送去液晶显示十位lcdxshuju(0x30+ge);/显示各位lcdxcom(0x0c);/设置开始显示，不显示光标 void lcdx_day(uchar add,uchar date)/写时分秒函数uchar shi,ge;shi=date/10;ge=date%10;lcdxcom(0x80+add);/设置显示位置lcdxshuju(0x30+shi);/送去液晶显示十位lcdxshuju(0x30+ge);/显示各位lcdxcom(0x0c);/设置开始显示，不显示光标3、时钟芯片ds1302的.h函数：#ifndef _DS1302_H_#define _DS1302_H_#include#define uint unsigned int #define uchar unsigned char value=1; sck=0; if(io) value=value|0x80; sck=1; rst=0; _nop_(); sck=0; _nop_(); sck=1; io=1; return value; void setds1302(void)uchar i,j;for(i=0;i8;i+) j=timedatai/10; timedatai=timedatai%10; timedatai=timedatai+j*16; wr_ds1302(0x8e,0x00);/去除写保护 for(i=0;i7;i+) wr_ds1302(xiedizhii,timedatai); wr_ds1302(0x8e,0x00);/加除写保护 lcdxcom(0xc0+14); lcdxshuju(table30); lcdxshuju(table32);void ds1302r_time(void) uchar i; for(i=0;i7;i+) timedatai=r_ds1302(dudizhii)/16*10+r_ds1302(dudizhii)%16; uchar table3=ONF;void wr_ds1302byte(uchar dat)/写一个字节的数据 uchar i; for(i=0;i=1; sck=1; void wr_ds1302(uchar add,uchar dat)/写数据 rst=0; _nop_(); sck=0; _nop_(); rst=1; _nop_(); wr_ds1302byte(add); wr_ds1302byte(dat); rst=0; _nop_(); io=1; sck=1;uchar r_ds1302(uchar add) uchar i,value; rst=0; _nop_(); sck=0; _nop_(); rst=1; _nop_(); wr_ds1302byte(add); for(i=0;i8;i+) if(yue=4)|(yue=6)|(yue=9)|(yue=11)r=30;if(a=1)&(yue=2)r=29;if(a=0)&(yue=2)r=28;return r; void keyscan(void) uchar z; uchar num=0;msdelay(500); if(key1=0) msdelay(10);if(key1=0)ds1302r_time();lcdx_time(10,0);while(1) if(key1=0)msdelay(500); num+; if(num=1) lcdxcom(0x80+0x40+4); lcdxcom(0x0f); while(key3=1)&(key1=1); do lcdxcom(0x80+0x40+4); lcdxcom(0x0f); while(!key3) shi+; if(shi=24) shi=0; lcdx_time(4,shi); msdelay(300); while(key1); miao=timedata6; fen=timedata5; shi=timedata4; day=timedata3; yue=timedata2; week=timedata1; nian=timedata0;void zhuan(void) m=timedata6; f=timedata5; s=timedata4; t=timedata3; y=timedata2; x=timedata1; n=timedata0;void pd(void) lcdx_time(10,miao); if(f!=fen) lcdx_time(7,fen); if(s!=shi) lcdx_time(4,shi); if(t!=day) lcdx_day(11,day); if(y!=yue) lcdx_day(8,yue); if(n!=nian) lcdx_day(5,nian); if(x!=week) lcdx_day(14,week);uchar panduan(uchar yue,uint nian) uchar r,a;a=(nian%400)=0|(nian%100!=0)&(nian%4=0);if(yue=1)|(yue=3)|(yue=5)|(yue=7)|(yue=8)|(yue=10)|(yue=12)r=31; while(key3=1)&(key1=1); do lcdxcom(0x80+11); lcdxcom(0x0f); while(!key3) day+; z=panduan(yue,nian); if(day=(z+1) day=0; lcdx_day(11,day); msdelay(300); while(key1); if(num=5) lcdxcom(0x80+8); lcdxcom(0x0f); while(key3=1)&(key1=1); do lcdxcom(0x80+8); lcdxcom(0x0f); while(!key3) yue+; if(yue=13) yue=0; lcdx_day(8,yue); msdelay(300); while(key1); if(num=6) lcdxcom(0x80+5); lcdxcom(0x0f); while(key3=1)&(key1=1); doif(num=2) lcdxcom(0xc0+7); lcdxcom(0x0f); while(key3=1)&(key1=1); do lcdxcom(0xc0+7); lcdxcom(0x0f); while(!key3) fen+; if(fen=60) fen=0; lcdx_time(7,fen); msdelay(300); while(key1); if(num=3) lcdxcom(0x80+14); lcdxcom(0x0f); while(key3=1)&(key1=1); do lcdxcom(0x80+14); lcdxcom(0x0f); while(!key3) week+; if(week=8) week=1; lcdx_day(14,week); msdelay(300); while(key1); if(num=4) lcdxcom(0x80+11); lcdxcom(0x0f);while(1) if(key2=0) num+; if(num=1) lcdxcom(0xc0+4); lcdxcom(0x0f); while(key3=1)&(key2=1); do lcdxcom(0xc0+4); lcdxcom(0x0f); while(!key3) dshi+; if(dshi=24) dshi=0; lcdx_time(4,dshi); msdelay(300);while(key2=1);if(num=2)lcdxcom(0xc0+7); lcdxcom(0x0f); while(key3=1)&(key2=1); do lcdxcom(0xc0+7); lcdxcom(0x0f); while(!key3) dfen+; if(dfen=60) dfen=0; lcdx_time(7,dfen); msdelay(300); lcdxcom(0x80+5); lcdxcom(0x0f); while(!key3) nian+; if(nian=20) nian=10; lcdx_day(5,nian); msdelay(300); while(key1); if(num=7) timedata4=shi;timedata5=fen;timedata6=0;timedata3=day;timedata2=yue;timedata0=nian;timedata1=week;setds1302();num=0;break; void setbeep(void) uchar num=0; msdelay(500); if(key2=0)msdelay(10); if(key2=0) lcdx_time(4,dshi); lcdx_time(7,dfen); lcdx_time(10,0);lcdxshuju(table31); p=0;/定时开标志 4、温度传感器ds18b20的.h函数：#ifndef _DS18B20_H_#define _DS18B20_H_#include#define uint unsigned int #define uchar unsigned charsbit ds=P23;void ds1820init(void);void ds1820xbyte(uchar dat);uchar ds1820rbyte(void);uchar rwendu(void);#endif温度传感器ds18b20的.c函数：#includeds18b20.h#includedelay.hvoid ds1820init(void)void ds1820xbyte(uchar dat) uchar i; for(i=0;i=1; uchar n; ds=1; ds18b20delay(8); ds=0; ds18b20delay(80); ds=1;while(key2=1);if(num=3)lcdx_time(4,shi);lcdx_time(7,fen); num=0; break;msdelay(300); void naozhong(void) if(b=1)&(dshi=shi)&(dfen=fen)&(miao=0)&(miao=1; ds=1;if(ds) a|=0x80; ds18b20delay(4); return a;uchar rwendu(void)uchar b,c; ds1820init(); ds1820xbyte(0xcc);/跳过rom ds1820xbyte(0x44);/启动温度测量 ds18b20delay(300); ds1820init(); ds1820xbyte(0xcc); ds1820xbyte(0xbe); b=ds1820rbyte(); c=ds1820rbyte(); c4; return c;ds18b20delay(8); n=ds; ds18b20delay(4);void ds1820xbyte(uchar dat) uchar i; for(i=0;i=1; ds18b20delay(4); uchar ds1820rbyte(void) uchar i,a; for(i=0;i=30) report=0; else report