51单片机实现基于DS1302160218B20的多功能电子时钟带测温功能.docx
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51单片机实现基于DS1302160218B20的多功能电子时钟带测温功能
#include
#defineucharunsignedchar
#defineuintunsignedint
/*------------------寄存器地址定义------------*/
#defineWRITE_SECOND0x80
#defineWRITE_MINUTE0x82
#defineWRITE_HOUR0x84
#defineWRITE_DAY0x86
#defineWRITE_MONTH0x88
#defineWRITE_YEAR0x8C
#defineWRITE_PROTECT0x8E
#defineWRITE_WEEK0x8A
#defineWRITE_CURRENT0x90
#defineREAD_SECOND0x81
#defineREAD_MINUTE0x83
#defineREAD_HOUR0x85
#defineREAD_DAY0x87
#defineREAD_MONTH0x89
#defineREAD_WEEK0x8B
#defineREAD_YEAR0x8D
sbitRST=P3^5;//DS1302片选
sbitDIO=P3^4;//DS1302数据信号
sbitSCLK=P3^6;//DS1302时钟信号
sbitACC7=ACC^7;
sbitACC0=ACC^0;
unsignedcharcount;
sbitbeep=P1^4;
voidINITIAL_1302();
unsignedcharREAD_1302(unsignedcharaddr);
voidWRITE_1302(unsignedcharaddr,unsignedchardate);
sbitLCD_E=P2^7;//液晶使能端
sbitLCD_RS=P2^6;//液晶数据命令选择端
sbitLCD_RW=P2^5;//液晶读写选择端
sbitkey0=P3^2;//功能键
sbitkey1=P3^3;//增大键
sbitkey2=P3^4;//减小键
sbitDQ=P3^7;//18b20温度输入输出端
charhour,minute,second,week,day,month,year,tem;
unsignedcharnum,flag;
unsignedcharstr1[]="20--";
unsignedcharstr2[]=":
:
C";
voiddelay(unsignedcharz);
voidLCD_WRITE_COM(unsignedcharcom);
voidLCD_WRITE_DATA(unsignedchardate);
voidLCD_WRITE_SFM(unsignedcharaddr,unsignedchardate);
voidLCD_WRITE_NYR(unsignedcharaddr,unsignedchardate);
voidLCD_WRITE_WEEK(unsignedcharweek);
voidLCD_INITIAL();
voidLCD_WRITE_TEMP(ucharaddr,uchartemp);
voidkeyscan();
voidINITIAL_TEMER0();
ucharTMPH,TMPL;
voidw1602c(ucharcom);
voidw1602d(uchardata01);
voiddelay2(uintms);
voiddelay3(uintus);
ucharresert(void);
ucharread_byte();
voidwrite_byte(ucharval);
uintget_temp();
voiddisplay();
voiddelay3(uintus);//18b20
ucharresert(void);//18b20
ucharread_byte();//18b20
voidwrite_byte(ucharval);//18b20
uintget_temp();//18b20
voidmain()
{
LCD_INITIAL();//液晶初始化
INITIAL_1302();//DS1302初始化
INITIAL_TEMER0();//定时器初始化
while
(1)
{
keyscan();//按键扫描
if(flag==0)//当标志位为0,允许读取DS1302数据,将数据送入液晶显示
{
second=READ_1302(0x81);
LCD_WRITE_SFM(10,second);
minute=READ_1302(0x83);
LCD_WRITE_SFM(7,minute);
hour=READ_1302(0x85);
LCD_WRITE_SFM(4,hour);
week=READ_1302(0x8b);
LCD_WRITE_WEEK(week);
day=READ_1302(0x87);
LCD_WRITE_NYR(9,day);
month=READ_1302(0x89);
LCD_WRITE_NYR(6,month);
year=READ_1302(0x8d);
LCD_WRITE_NYR(3,year);
tem=get_temp();
LCD_WRITE_TEMP(13,tem);
}
}
}
/**********************1602BU份******************************************************/
voiddelay(unsignedcharz)//1602de延时函数
{
unsignedcharx,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
voidLCD_WRITE_COM(unsignedcharcom)
{
LCD_RS=0;
LCD_RW=0;
LCD_E=1;
P0=com;
delay(5);
LCD_E=0;
}
voidLCD_WRITE_DATA(unsignedchardate)
{
LCD_RS=1;
LCD_RW=0;
LCD_E=1;
P0=date;
delay(5);
LCD_E=0;
}
voidLCD_WRITE_SFM(unsignedcharaddr,unsignedchardate)
{
unsignedcharshi,ge;
shi=date/10;
ge=date%10;
LCD_WRITE_COM(0x80+0x40+addr);
LCD_WRITE_DATA(0x30+shi);
LCD_WRITE_DATA(0x30+ge);
}
voidLCD_WRITE_NYR(unsignedcharaddr,unsignedchardate)
{
charshi,ge;
shi=date/10;
ge=date%10;
LCD_WRITE_COM(0x80+addr);
LCD_WRITE_DATA(0x30+shi);
LCD_WRITE_DATA(0x30+ge);
}
voidLCD_WRITE_WEEK(unsignedcharweek)
{
LCD_WRITE_COM(0x80+12);
switch(week)
{
case1:
LCD_WRITE_DATA('M');delay(5);
LCD_WRITE_DATA('O');delay(5);;
LCD_WRITE_DATA('N');break;
case2:
LCD_WRITE_DATA('T');delay(5);
LCD_WRITE_DATA('U');delay(5);
LCD_WRITE_DATA('E');break;
case3:
LCD_WRITE_DATA('W');delay(5);
LCD_WRITE_DATA('E');delay(5);
LCD_WRITE_DATA('D');break;
case4:
LCD_WRITE_DATA('T');delay(5);
LCD_WRITE_DATA('H');delay(5);
LCD_WRITE_DATA('U');break;
case5:
LCD_WRITE_DATA('F');delay(5);
LCD_WRITE_DATA('R');delay(5);
LCD_WRITE_DATA('I');break;
case6:
LCD_WRITE_DATA('S');delay(5);
LCD_WRITE_DATA('A');delay(5);
LCD_WRITE_DATA('T');break;
case7:
LCD_WRITE_DATA('S');delay(5);
LCD_WRITE_DATA('U');delay(5);
LCD_WRITE_DATA('N');break;
}
}
voidLCD_WRITE_TEMP(ucharaddr,uchartemp)
{
charshi,ge;
shi=temp/10;
ge=temp%10;
LCD_WRITE_COM(0x80+0x40+addr);
LCD_WRITE_DATA(0x30+shi);
LCD_WRITE_DATA(0x30+ge);
}
voidLCD_INITIAL()
{
unsignedchari;
LCD_WRITE_COM(0x38);
LCD_WRITE_COM(0x0c);
LCD_WRITE_COM(0x06);//经本人试验证明1602初始化不清屏也可实现
LCD_WRITE_COM(0x80);
for(i=0;i<16;i++)
{
LCD_WRITE_DATA(str1[i]);
delay(5);
}
LCD_WRITE_COM(0x80+0x40);//液晶第二行显示
for(i=0;i<16;i++)
{
LCD_WRITE_DATA(str2[i]);
delay(5);
}
}
/***************************1302部分***************************************************/
voidWRITE_1302(unsignedcharaddr,unsignedchardate)
{
unsignedchari;
RST=0;
SCLK=0;
RST=1;
for(i=8;i>0;i--)
{
SCLK=0;
ACC=addr;
DIO=ACC0;
addr>>=1;
SCLK=1;
}
for(i=8;i>0;i--)
{
SCLK=0;
ACC=date;
DIO=ACC0;
date>>=1;
SCLK=1;
}
RST=0;
}
unsignedcharREAD_1302(unsignedcharaddr)
{
unsignedchari,date1,date2;
RST=0;
SCLK=0;
RST=1;
for(i=8;i>0;i--)
{
SCLK=0;
ACC=addr;
DIO=ACC0;
addr>>=1;
SCLK=1;
}
for(i=8;i>0;i--)
{
ACC7=DIO;
SCLK=1;
ACC>>=1;
SCLK=0;
}
RST=0;
date1=ACC;
date2=date1/16;
date1=date1%16;
date1=date1+date2*10;
return(date1);
}
voidINITIAL_1302()
{
WRITE_1302(WRITE_SECOND,READ_1302(READ_SECOND)&0x7f);//启动DS1302
}
/**************************键盘扫描部分***************************************************/
voidkeyscan()
{
if(key0==0)//确认功能键按下
{
delay(20);
if(key0==0)//去抖
{
while(!
key0);//释放
num++;
switch(num)
{
case1:
flag=1;//修改时间,禁止从DS1302读数据
TR0=0;//定时器关
LCD_WRITE_COM(0x0f);//光标开始闪烁
LCD_WRITE_COM(0x80+3);//第一次按下,光标定位到年位置
break;
case2:
LCD_WRITE_COM(0x80+6);//第二次按下,光标定位到月位置
break;
case3:
LCD_WRITE_COM(0x80+9);//第三次按下,光标定位到日位置
break;
case4:
LCD_WRITE_COM(0x80+12);//第四次按下,光标定位到星期位置
break;
case5:
LCD_WRITE_COM(0x80+0x40+4);//第五次按下,光标定位到时位置
break;
case6:
LCD_WRITE_COM(0x80+0x40+7);//第六次按下,光标定位到分位置
break;
case7:
LCD_WRITE_COM(0x80+0x40+10);//第七次按下,光标定位到秒位置
break;
case8:
num=0;//第八次按下,记录清零
LCD_WRITE_COM(0x0c);//不显示光标
WRITE_1302(WRITE_PROTECT,0x00);//允许写操作
WRITE_1302(0x80,(second/10*16)+second%10);//将调节后的秒写入DS1302
WRITE_1302(0x82,(minute/10*16)+minute%10);//将调节后的分写入DS1302
WRITE_1302(0x84,(hour/10*16)+hour%10);//将调节后的时写入DS1302
WRITE_1302(0x8a,(week/10*16)+week%10);//将调节后的星期写入DS1302
WRITE_1302(0x86,(day/10*16)+day%10);//将调节后的日写入DS1302
WRITE_1302(0x88,(month/10*16)+month%10);//将调节后的月写入DS1302
WRITE_1302(0x8c,(year/10*16)+year%10);//将调节后的年写入DS1302
WRITE_1302(WRITE_PROTECT,0x80);//开写保护
flag=0;//时间修改完毕,允许液晶从DS1302读数据
TR0=1;
break;
}
}
}
if(num!
=0)
{
if(key1==0)//确认增大键按下
{
delay(20);
if(key1==0)//增大键确实按下
{
while(!
key1);
switch(num)
{
case1:
year++;//调节年
if(year==100)year=0;
LCD_WRITE_NYR(3,year);//将调节后的年送入液晶显示
LCD_WRITE_COM(0x80+3);//光标回到指定处
break;
case2:
month++;//调节月
if(month==13)month=0;
LCD_WRITE_NYR(6,month);//将调节后的月送入液晶显示
LCD_WRITE_COM(0x80+6);//光标回到指定处
break;
case3:
day++;//调节日
if(day==32)day=0;
LCD_WRITE_NYR(9,day);//将调节后的日送入液晶显示
LCD_WRITE_COM(0x80+9);//光标回到指定处
break;
case4:
week++;
if(week==8)week=0;
LCD_WRITE_WEEK(week);//将调节后的星期送入液晶显示
LCD_WRITE_COM(0x80+12);//光标回到指定处
break;
case5:
hour++;
if(hour==24)hour=0;
LCD_WRITE_SFM(4,hour);//将调节后的小时送入液晶显示
LCD_WRITE_COM(0x80+0x40+4);//光标回到指定处
break;
case6:
minute++;
if(minute==60)minute=0;
LCD_WRITE_SFM(7,minute);//将调节后的分送入液晶显示
LCD_WRITE_COM(0x80+0x40+7);//光标回到指定处
break;
case7:
second++;
if(second==60)second=0;
LCD_WRITE_SFM(10,second);//将调节后的秒送入液晶显示
LCD_WRITE_COM(0x80+0x40+10);//光标回到指定处
break;
default:
break;
}
}
}
if(key2==0)//确认减小键按下
{
delay(20);
if(key2==0)//减小键确实按下
{
while(!
key2);
switch(num)
{
case1:
year--;//调节年
if(year==-1)year=99;
LCD_WRITE_NYR(3,year);
LCD_WRITE_COM(0x80+3);
break;
case2:
month--;//调节月
if(month==-1)month=12;
LCD_WRITE_NYR(6,month);
LCD_WRITE_COM(0x80+6);
break;
case3:
day--;//调节日
if(day==-1)day=31;
LCD_WRITE_NYR(9,day);
LCD_WRITE_COM(0x80+9);
break;
case4:
week--;//调节星期
if(week==0)week=7;
LCD_WRITE_WEEK(week);
LCD_WRITE_COM(0x80+12);
break;
case5:
hour--;//调节时
if(hour==-1)hour=23;
LCD_WRITE_SFM(4,hour);
LCD_WRITE_COM(0x80+0x40+4);
break;
case6:
minute--;//调节分
if(minute==-1)minute=59;
LCD_WRITE_SFM(7,minute);
LCD_WRITE_COM(0x80+0x40+7);
break;
case7:
second--;//调节秒
if(second==-1)second=59;
LCD_WRITE_SFM(10,second);
LCD_WRITE_COM(0x80+0x40+10);
break;
default:
break;
}
}
}
}
}
/*******************************蜂鸣器部分******************************************/
/*-----------定时器0初始化-------------------------*/
voidINITIAL_TEMER0()
{
TMOD=0x01;
TH0=(65536-20000)/256;
TL0=(65536-20000)%256;//晶振频率12MHZ定时20ms作右
TR0=1;
EA=1;
ET0=1;
}
/*-------------------------------------------*/
voidtimer0()interrupt1
{
TH0=(65536-20000)/256;
TL0=(65536-20000)%256;//重装
count++;
if(count==50)//1秒到
{
count=0;
beep=0;//蜂鸣器响
delay(5);
beep=1;//蜂鸣器灭
}
if(tem>=30)
{
beep=0;
}
}
/*****************************18b20部分*********************************************888*/
voiddelay3(uintus)
{
uints;
for(s=0;s}
ucharresert(void)
{
ucharready;
DQ=0;
delay