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標(biāo)題: 基于51單片機(jī)的多功能時(shí)鐘溫度計(jì) [打印本頁(yè)]

作者: ppp123ppp 時(shí)間: 2019-11-20 16:52
標(biāo)題: 基于51單片機(jī)的多功能時(shí)鐘溫度計(jì)
程序仿真原理圖都有：：：

程序：
#include<reg52.h>
#include<intrins.h>
#define uchar unsigned char
#define uint unsigned int
#define    LCDIO    P0
sbit rs=P2^0;
sbit rd=P2^1;
sbit lcden=P2^2;
sbit acc0=ACC^0;          //移位時(shí)的第0位
sbit acc7=ACC^7;          //移位時(shí)用的第7位
sbit ct=P2^3;
sbit speaker=P3^5;
sbit DQ=P2^5;//ds18b20與單片機(jī)連接口
int djs11=0,js,dsmin=0,dshour=0;

uchar second,minute,hour,day,month,year,week,count=0;
uchar ReadValue,num,time;
uint tvalue;//溫度值
uchar tflag;
uchar code table[]={" 2000-00-00 FRI"};
uchar code table1[]={" 00:00:00    "};
uchar code table2[]= "THUFRISATSUNMONTUEWES";
char szdata[8];
char szdata1[8];
uchar data disdata[5];
sbit DATA=P3^3; //時(shí)鐘數(shù)據(jù)接口
sbit RST=P3^4;
sbit SCLK=P3^2;
sbit menu=P2^7;             //菜單
sbit add=P2^6;             //加一
sbit dec=P2^4;
sbit set=P2^3 ;             //減一
sbit djs=P3^6;
void miaobiao();
void yx();
void delayms(int x)
{
char i;
while(x--)
{
  for(i=150;i>0;i--);
}
}
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
void delay1(uint z)
{
for(;z>0;z--);
}
void write_com(uchar com)
{
rs=0;
rd=0;
lcden=0;
LCDIO=com;
delay(5);
lcden=1;
delay(5);
lcden=0;
}

void write_date(uchar date)
{
rs=1;
rd=0;
lcden=0;
LCDIO=date;
delay(5);
lcden=1;
delay(5);
lcden=0;
}

void init()
{
uchar num;
lcden=0;

write_com(0x38);
write_com(0x0c);
write_com(0x06);
write_com(0x01);
write_com(0x80);
delay(5);
write_com(0x80);
for(num=0;num<15;num++)
{
write_date(table[num]);
delay(5);
}
write_com(0x80+0x40);
for(num=0;num<15;num++)
{
write_date(table1[num]);
delay(5);
}

}

void Write1302(uchar dat)
{
  uchar i;
  SCLK=0;          //拉低SCLK，為脈沖上升沿寫入數(shù)據(jù)做好準(zhǔn)備
  delay1(2);    //稍微等待，使硬件做好準(zhǔn)備
  for(i=0;i<8;i++)    //連續(xù)寫8個(gè)二進(jìn)制位數(shù)據(jù)
{
   DATA=dat&0x01; //取出dat的第0位數(shù)據(jù)寫入1302
  delay(2);    //稍微等待，使硬件做好準(zhǔn)備
SCLK=1;          //上升沿寫入數(shù)據(jù)
delay1(2);    //稍微等待，使硬件做好準(zhǔn)備
SCLK=0;          //重新拉低SCLK，形成脈沖
dat>>=1;       //將dat的各數(shù)據(jù)位右移1位，準(zhǔn)備寫入下一個(gè)數(shù)據(jù)位
}
}

void WriteSet1302(uchar Cmd,uchar dat)
{
RST=0;          //禁止數(shù)據(jù)傳遞
SCLK=0;       //確保寫數(shù)居前SCLK被拉低
RST=1;          //啟動(dòng)數(shù)據(jù)傳輸
delay1(2);    //稍微等待，使硬件做好準(zhǔn)備
Write1302(Cmd);  //寫入命令字
Write1302(dat);  //寫數(shù)據(jù)
SCLK=1;       //將時(shí)鐘電平置于已知狀態(tài)
RST=0;          //禁止數(shù)據(jù)傳遞
}

uchar Read1302(void)
{
uchar i,dat;
delay(2);    //稍微等待，使硬件做好準(zhǔn)備
for(i=0;i<8;i++) //連續(xù)讀8個(gè)二進(jìn)制位數(shù)據(jù)
{
dat>>=1;    //將dat的各數(shù)據(jù)位右移1位，因?yàn)橄茸x出的是字節(jié)的最低位
if(DATA==1) //如果讀出的數(shù)據(jù)是1
dat|=0x80; //將1取出，寫在dat的最高位
SCLK=1;    //將SCLK置于高電平，為下降沿讀出
delay1(2);  //稍微等待
SCLK=0;    //拉低SCLK，形成脈沖下降沿
delay1(2);  //稍微等待
}
  return dat;       //將讀出的數(shù)據(jù)返回
  }

uchar  ReadSet1302(uchar Cmd)
{
  uchar dat;
  RST=0;                //拉低RST
  SCLK=0;             //確保寫數(shù)居前SCLK被拉低
  RST=1;                //啟動(dòng)數(shù)據(jù)傳輸
  Write1302(Cmd);    //寫入命令字
  dat=Read1302();    //讀出數(shù)據(jù)
  SCLK=1;             //將時(shí)鐘電平置于已知狀態(tài)
  RST=0;             //禁止數(shù)據(jù)傳遞
  return dat;       //將讀出的數(shù)據(jù)返回
}
void Init_DS1302(void)
{
WriteSet1302(0x8E,0x00);                //根據(jù)寫狀態(tài)寄存器命令字，寫入不保護(hù)指令
WriteSet1302(0x80,((0/10)<<4|(0%10))); //根據(jù)寫秒寄存器命令字，寫入秒的初始值
WriteSet1302(0x82,((12/10)<<4|(12%10))); //根據(jù)寫分寄存器命令字，寫入分的初始值
WriteSet1302(0x84,((11/10)<<4|(11%10))); //根據(jù)寫小時(shí)寄存器命令字，寫入小時(shí)的初始值
WriteSet1302(0x86,((25/10)<<4|(25%10))); //根據(jù)寫日寄存器命令字，寫入日的初始值
WriteSet1302(0x88,((1/10)<<4|(1%10))); //根據(jù)寫月寄存器命令字，寫入月的初始值
WriteSet1302(0x8c,((13/10)<<4|(13%10))); //nian
WriteSet1302(0x8a,((1/10)<<4|(1%10)));
}

void DisplaySecond(uchar x)
{
uchar i,j;
i=x/10;
j=x%10;
write_com(0xc7);
write_date(0x30+i);
write_date(0x30+j);
}
void DisplayMinute(uchar x)
{
uchar i,j;
i=x/10;
j=x%10;
write_com(0xc4);
write_date(0x30+i);
write_date(0x30+j);
}
void DisplayHour(uchar x)
{
uchar i,j;
i=x/10;
j=x%10;
write_com(0xc1);
write_date(0x30+i);
write_date(0x30+j);
}

void DisplayDay(uchar x)
{
uchar i,j;
i=x/10;
j=x%10;
write_com(0x89);
write_date(0x30+i);
write_date(0x30+j);
}

void DisplayMonth(uchar x)
{
uchar i,j;
i=x/10;
j=x%10;
write_com(0x86);
write_date(0x30+i);
write_date(0x30+j);
}

void DisplayYear(uchar x)
{
uchar i,j;
  i=x/10;
j=x%10;
write_com(0x83);
write_date(0x30+i);
write_date(0x30+j);
}
void DisplayWeek(uchar x)
{ uchar i;
x=x*3;
write_com(0x8c);
for(i=0;i<3;i++)
{
   write_date(table2[x]);
x++;
}
}

void  read_date(void)
{
   ReadValue = ReadSet1302(0x81);
   second=((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
   ReadValue = ReadSet1302(0x83);
   minute=((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
   ReadValue = ReadSet1302(0x85);
   hour=((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
   ReadValue = ReadSet1302(0x87);
   day=((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
   ReadValue = ReadSet1302(0x89);
   month=((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
   ReadValue = ReadSet1302(0x8d);
   year=((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
   ReadValue=ReadSet1302(0x8b);                   //讀星期
   week=ReadValue&0x07;
   if((year==szdata[1])&&(month==szdata[2])&&(day==szdata[3])&&(week==szdata[4])&&(hour==szdata[5])&&(minute==szdata[6])&&(second==szdata[7]))       speaker=0;
   DisplaySecond(second);
   DisplayMinute(minute);
   DisplayHour(hour);
   DisplayDay(day);
   DisplayMonth(month);
   DisplayYear(year);
   DisplayWeek(week);
}

void turn_val(char newval,uchar flag,uchar  newaddr,uchar s1num)
{
               newval=ReadSet1302(newaddr);                   //讀取當(dāng)前時(shí)間
               newval=((newval&0x70)>>4)*10+(newval&0x0f); //將bcd碼轉(zhuǎn)換成十進(jìn)制
               if(flag)                //判斷是加一還是減一
               {
      newval++;
                  switch(s1num)
                     { case 1: if(newval>99) newval=0;
               DisplayYear(newval);
   break;
      case 2: if(newval>12) newval=1;
        DisplayMonth(newval);
   break;
      case 3: if(newval>31) newval=1;
            DisplayDay(newval);
   break;
      case 4: if(newval>6) newval=0;
            DisplayWeek(newval);
   break;
                     case 5: if(newval>23) newval=0;
            DisplayHour(newval);
   break;
                     case 6: if(newval>59) newval=0;
            DisplayMinute(newval);
   break;
                     case 7: if(newval>59) newval=0;
            DisplaySecond(newval);
   break;
                     default:break;
                     }
   }
else
               {
      newval--;
switch(s1num)
                     { case 1: if(newval<0) newval=99;
               DisplayYear(newval);
   break;
      case 2: if(newval<0) newval=12;
        DisplayMonth(newval);
            break;
      case 3: if(newval<0) newval=31;
        DisplayDay(newval);
            break;
      case 4: if(newval<0) newval=6;
            DisplayWeek(newval);
   break;
                     case 5: if(newval<0) newval=23;
            DisplayHour(newval);
   break;
                     case 6: if(newval<0) newval=59;
            DisplayMinute(newval);
   break;
                     case 7: if(newval<0) newval=59;
            DisplaySecond(newval);
   break;
   default:break;
         }
   }
            WriteSet1302((newaddr-1),((newval/10)<<4)|(newval%10));  //將新數(shù)據(jù)寫入寄存器

}

void turn_val11(char newval,uchar flag,uchar  newaddr,uchar s1num)
{
               newval=szdata[s1num];                   //讀取當(dāng)前時(shí)間
               //newval=((newval&0x70)>>4)*10+(newval&0x0f); //將bcd碼轉(zhuǎn)換成十進(jìn)制
               if(flag)                //判斷是加一還是減一
               {
      newval++;
                  switch(s1num)
                     { case 1: if(newval>99) newval=0;
               DisplayYear(newval);
   break;
      case 2: if(newval>12) newval=1;
        DisplayMonth(newval);
   break;
      case 3: if(newval>31) newval=1;
            DisplayDay(newval);
   break;
      case 4: if(newval>6) newval=0;
            DisplayWeek(newval);
   break;
                     case 5: if(newval>23) newval=0;
            DisplayHour(newval);
   break;
                     case 6: if(newval>59) newval=0;
            DisplayMinute(newval);
   break;
                     case 7: if(newval>59) newval=0;
            DisplaySecond(newval);
   break;
                     default:break;
                     }
   }
else
               {
      newval--;
switch(s1num)
                     { case 1: if(newval<0) newval=99;
               DisplayYear(newval);
   break;
      case 2: if(newval<0) newval=12;
        DisplayMonth(newval);
            break;
      case 3: if(newval<0) newval=31;
        DisplayDay(newval);
            break;
      case 4: if(newval<0) newval=6;
            DisplayWeek(newval);
   break;
                     case 5: if(newval<0) newval=23;
            DisplayHour(newval);
   break;
                     case 6: if(newval<0) newval=59;
            DisplayMinute(newval);
   break;
                     case 7: if(newval<0) newval=59;
            DisplaySecond(newval);
   break;
   default:break;
         }
   }
               szdata[s1num]= newval;
   szdata1[s1num]=newval;
//WriteSet1302((newaddr-1),((newval/10)<<4)|(newval%10));  //將新數(shù)據(jù)寫入寄存器

}

//鍵盤掃描程序
//*******************************************
void key_scan(void)
{ uchar miao,s1num=0;

if(menu==0)
   {
   delay(5);
   if(menu==0)
   {
      while(!menu);
   s1num++;
               write_com(0xc9);
   write_date(' ');//顯示符號(hào)位
   write_com(0xca);
   write_date(' ');//顯示百位
   write_com(0xcb);
   write_date('T');//顯示十位
   write_com(0xcc);
   write_date('-');//顯示個(gè)位
   write_com(0xcd);
   write_date('S');//顯示小數(shù)點(diǎn)
   write_com(0xce);
   write_date('E');//顯示小數(shù)位
   write_com(0xcf);
   write_date('T');
while(1)
      {

      if(menu==0)
         {
            delay(5);
            if(menu==0)
               {
      while(!menu);
                  s1num++;
            }
         }

         rd=0;
miao=ReadSet1302(0x81);
second=miao;
WriteSet1302(0x80,miao|0x80);
      write_com(0x0f);//光標(biāo)閃射

if(s1num==1)
{ year=ReadSet1302(0x8d);
write_com(0x80+4); //年光標(biāo)

      if(add==0)
      {
         delay(3);
         if(add==0)
         { while(!add);
               turn_val(year,1,0x8d,1);

         }
      }
            if(dec==0)
         {
         delay(3);
         if(dec==0)
         { while(!dec);
            turn_val(year,0,0x8d,1);
         }
      }
   }
if(s1num==2)
{
   month=ReadSet1302(0x89);
write_com(0x80+7); //月光標(biāo)
   if(add==0)
{
   delay(3);
   if(add==0)
   {  while(!add);
      turn_val(month,1,0x89,2);
      }
}
if(dec==0)
{
   delay(3);
   if(dec==0)
   {  while(!dec);
      turn_val(month,0,0x89,2);
   }
}
}
if(s1num==3)
{ day=ReadSet1302(0x87);
write_com(0x80+10);//日光標(biāo)
if(add==0)
   {
   delay(3);
   if(add==0)
   { while(!add);
         turn_val(day,1,0x87,3);
      }
}
if(dec==0)
{
   delay(3);
   if(dec==0)
   { while(!dec);
      turn_val(day,0,0x87,3); //寫入日寄存器
   }
}
}
if(s1num==4)
{  week=ReadSet1302(0x8b);
write_com(0x80+14); //星期光標(biāo)
   if(add==0)
         {
   delay(3);
   if(add==0)
   { while(!add);
      turn_val(week,1,0x8b,4);
      }
}
if(dec==0)
{
   delay(3);
   if(dec==0)
   { while(!dec);
               turn_val(week,0,0x8b,4);
   }
}
}
if(s1num==5)
{ hour=ReadSet1302(0x85);
write_com(0x80+0x40+2); //時(shí)光標(biāo)
   if(add==0)
{
   delay(3);
   if(add==0)
   { while(!add);
               turn_val(hour,1,0x85,5);
      }
}
if(dec==0)
{
   delay(3);
   if(dec==0)
   { while(!dec);
         turn_val(hour,0,0x85,5);
   }
}
}
if(s1num==6)//調(diào)時(shí)間分
{  minute=ReadSet1302(0x83);
write_com(0x80+0x40+5);
if(add==0)
{
   delay(5);
   if(add==0)
   { while(!add);
         turn_val(minute,1,0x83,6); //寫入分寄存器
      }
}
if(dec==0)
{
   delay(3);
   if(dec==0)
   { while(!dec);
         turn_val(minute,0,0x83,6); //寫入分寄存器
   }
}
}
if(s1num==7)//調(diào)時(shí)間秒
{ second=ReadSet1302(0x81);
write_com(0x80+0x40+8);//秒光標(biāo)
if(add==0)
{
   delay(3);
   if(add==0)
   { while(!add);
               if(second==0x60)
                  second=0x00;
         turn_val(second,1,0x81,7);
      }
}
if(dec==0)
{
   delay(3);
   if(dec==0)
   { while(!dec);
         turn_val(second,0,0x81,7);
   }
}
}


if(s1num==8)
{ miao=ReadSet1302(0x81);
second=miao;
WriteSet1302(0x80,second&0x7f);
s1num=0;//s1num清零//
write_com(0x0c);//光標(biāo)不閃爍//
break;
}
}
}
}

  if(ct==0)
   {
   delay(5);
   if(ct==0)
   {
      while(!ct);
   s1num++;
   write_com(0xc9);
   write_date(' ');//顯示符號(hào)位
   write_com(0xca);
   write_date(' ');//顯示百位
   write_com(0xcb);
   write_date('C');//顯示十位
   write_com(0xcc);
   write_date('-');//顯示個(gè)位
   write_com(0xcd);
   write_date('S');//顯示小數(shù)點(diǎn)
   write_com(0xce);
   write_date('E');//顯示小數(shù)位
   write_com(0xcf);
   write_date('T');
   DisplaySecond(szdata1[7]);
   DisplayMinute(szdata1[6]);
   DisplayHour(szdata1[5]);
   DisplayDay(szdata1[3]);
   DisplayMonth(szdata1[2]);
   DisplayYear(szdata1[1]);
   DisplayWeek(szdata1[4]);
while(1)
      {

      if(ct==0)
         {
            delay(5);
            if(ct==0)
               {
      while(!ct);
                  s1num++;
            }
         }

         rd=0;
miao=ReadSet1302(0x81);
second=miao;
WriteSet1302(0x80,miao|0x80);
      write_com(0x0f);//光標(biāo)閃射

if(s1num==1)
{ year=0x00;
write_com(0x80+4); //年光標(biāo)

      if(add==0)
      {
         delay(3);
         if(add==0)
         { while(!add);
               turn_val11(year,1,0x8d,1);

         }
      }
            if(dec==0)
         {
         delay(3);
         if(dec==0)
         { while(!dec);
            turn_val11(year,0,0x8d,1);
         }
      }
   }
if(s1num==2)
{
   month=0x00;
write_com(0x80+7); //月光標(biāo)
   if(add==0)
{
   delay(3);
   if(add==0)
   {  while(!add);
      turn_val11(month,1,0x89,2);
      }
}
if(dec==0)
{
   delay(3);
   if(dec==0)
   {  while(!dec);
      turn_val11(month,0,0x89,2);
   }
}
}
if(s1num==3)
{ day=0x00;
write_com(0x80+10);//日光標(biāo)
if(add==0)
   {
   delay(3);
   if(add==0)
   { while(!add);
         turn_val11(day,1,0x87,3);
      }
}
if(dec==0)
{
   delay(3);
   if(dec==0)
   { while(!dec);
      turn_val11(day,0,0x87,3); //寫入日寄存器
   }
}
}
if(s1num==4)
{  week=0x00;
write_com(0x80+14); //星期光標(biāo)
   if(add==0)
         {
   delay(3);
   if(add==0)
   { while(!add);
      turn_val11(week,1,0x8b,4);
      }
}
if(dec==0)
{
   delay(3);
   if(dec==0)
   { while(!dec);
               turn_val11(week,0,0x8b,4);
   }
}
}
if(s1num==5)
{ hour=0x00;
write_com(0x80+0x40+2); //時(shí)光標(biāo)
   if(add==0)
{
   delay(3);
   if(add==0)
   { while(!add);
               turn_val11(hour,1,0x85,5);
      }
}
if(dec==0)
{
   delay(3);
   if(dec==0)
   { while(!dec);
         turn_val11(hour,0,0x85,5);
   }
}
}
if(s1num==6)//調(diào)時(shí)間分
{  minute=0x00;
write_com(0x80+0x40+5);
if(add==0)
{
   delay(5);
   if(add==0)
   { while(!add);
         turn_val11(minute,1,0x83,6); //寫入分寄存器
      }
}
if(dec==0)
{
   delay(3);
   if(dec==0)
   { while(!dec);
         turn_val11(minute,0,0x83,6); //寫入分寄存器
   }
}
}
if(s1num==7)//調(diào)時(shí)間秒
{ second=0x00;
write_com(0x80+0x40+8);//秒光標(biāo)
if(add==0)
{
   delay(3);
   if(add==0)
   { while(!add);
               if(second==0x60)
                  second=0x00;
         turn_val11(second,1,0x81,7);
      }
}
if(dec==0)
{
   delay(3);
   if(dec==0)
   { while(!dec);
         turn_val11(second,0,0x81,7);
   }
}
}


if(s1num==8)
{ miao=ReadSet1302(0x81);
second=miao;
WriteSet1302(0x80,second&0x7f);
s1num=0;//s1num清零//
write_com(0x0c);//光標(biāo)不閃爍//
break;
}
}
}
}
}

void Timer0_init()
{
   js=0;
   TMOD=0x01;       //T0為定時(shí)器方式1
   TH0=0x4c;
   TL0=0x00;
   //IT1=1;
   ET0=1;//EX1=1;
   EA=1;
}

void timer0() interrupt 1 using 1
{
      TF0=0;
     //TH0=0x4c;
//TL0=0x00;
TH0=0xb3;
TL0=0x4c;
js++;
if(js==1)
   { js=0;
      djs11++;
//led1=~led1;
if(djs11>59)
   {
      djs11=0;
dsmin=dsmin+1;
if(dsmin>59)
   {
   dsmin=0;
   dshour=dshour+1;
   if(dshour>24) dshour=0;
   }
}
   }
}
void miaobiao()
{ int i,j;

         write_com(0x80);write_date(' ');
write_com(0x81);write_date(' ');
write_com(0x82);write_date(' ');
write_com(0x83);write_date(' ');
write_com(0x84);write_date(' ');
write_com(0x85);write_date(' ');
write_com(0x86);write_date(' ');
write_com(0x87);write_date(' ');
      write_com(0x88);write_date(' ');
write_com(0x89);write_date(' ');
write_com(0x8a);write_date(' ');
write_com(0x8b);write_date(' ');
write_com(0x8c);write_date(' ');
write_com(0x8d);write_date(' ');
write_com(0x8e);write_date(' ');
write_com(0x8f);write_date(' ');
write_com(0xc0);write_date(' ');
write_com(0xc1);write_date(' ');
write_com(0xc2);write_date(' ');
write_com(0xc3);write_date(' ');
write_com(0xc4);write_date(' ');
write_com(0xc5);write_date(' ');
write_com(0xc6);write_date(' ');
write_com(0xc7);write_date(' ');
      write_com(0xc8);write_date(' ');
write_com(0xc9);write_date(' ');
write_com(0xca);write_date(' ');
write_com(0xcb);write_date(' ');
write_com(0xcc);write_date(' ');
write_com(0xcd);write_date(' ');
write_com(0xce);write_date(' ');
write_com(0xcf);write_date(' ');
   while(1)
      { if(add==0)
      {
   delayms(30);
      if(add==0)
   {
      TR0=1;
   }

   }
if(dec==0)
      {
   delayms(30);
      if(dec==0)
   {
      TR0=0;
   }
   }
if(set==0)
      {
   delayms(30);
      if(set==0)
   {
      djs11=0;
TR0=0;
dsmin=0;
dshour=0;
   }
   }
   if(djs==0)
      {
   delayms(30);
      if(djs==0)
   {
yx();
   }
   }
write_com(0xc4);
   i=dshour/10;
         j=dshour%10;
         write_date(0x30+i);
         write_date(0x30+j);

   write_date(':');
   i=dsmin/10;
         j=dsmin%10;
         write_date(0x30+i);
         write_date(0x30+j);
   write_date(':');

        i=djs11/10;
         j=djs11%10;
         write_date(0x30+i);
         write_date(0x30+j);
}
}
void delay_18B20(unsigned int i)//延時(shí)1微秒
{
while(i--);
}
void ds1820rst()/*ds1820復(fù)位*/
{  unsigned char x=0;
   DQ = 1;       //DQ復(fù)位
   delay_18B20(4);  //延時(shí)
   DQ = 0;       //DQ拉低
   delay_18B20(100); //精確延時(shí)大于480us
   DQ = 1;       //拉高
   delay_18B20(40);
}

uchar ds1820rd()/*讀數(shù)據(jù)*/
  { unsigned char i=0;
   unsigned char dat = 0;
   for (i=8;i>0;i--)
   { DQ = 0; //給脈沖信號(hào)
   dat>>=1;
   DQ = 1; //給脈沖信號(hào)
   if(DQ)
   dat|=0x80;
   delay_18B20(10);
   }
return(dat);
  }

  void ds1820wr(uchar wdata)/*寫數(shù)據(jù)*/
  {unsigned char i=0;
for (i=8; i>0; i--)
{ DQ = 0;
   DQ = wdata&0x01;
   delay_18B20(10);
   DQ = 1;
   wdata>>=1;
}
}
read_temp()/*讀取溫度值并轉(zhuǎn)換*/
{uchar a,b;
  ds1820rst();
  ds1820wr(0xcc);//*跳過讀序列號(hào)*/
  ds1820wr(0x44);//*啟動(dòng)溫度轉(zhuǎn)換*/
  ds1820rst();
  ds1820wr(0xcc);//*跳過讀序列號(hào)*/
  ds1820wr(0xbe);//*讀取溫度*/
  a=ds1820rd();
  b=ds1820rd();
  tvalue=b;
  tvalue<<=8;
  tvalue=tvalue|a;
if(tvalue<0x0fff)
tflag=0;
else
{tvalue=~tvalue+1;
   tflag=1;
}
  tvalue=tvalue*(0.625);//溫度值擴(kuò)大10倍，精確到1位小數(shù)
return(tvalue);
  }
void ds1820disp()//溫度值顯示
{ uchar flagdat;
   disdata[0]=tvalue/1000+0x30;//百位數(shù)
   disdata[1]=tvalue%1000/100+0x30;//十位數(shù)
   disdata[2]=tvalue%100/10+0x30;//個(gè)位數(shù)
   disdata[3]=tvalue%10+0x30;//小數(shù)位

   if(tflag==0)
      flagdat=0x20;//正溫度不顯示符號(hào)
   else
   flagdat=0x2d;//負(fù)溫度顯示負(fù)號(hào):-

   if(disdata[0]==0x30)
   {disdata[0]=0x20;//如果百位為0，不顯示
   if(disdata[1]==0x30)
   {disdata[1]=0x20;//如果百位為0，十位為0也不顯示
   }
}

   write_com(0xc9);
   write_date(flagdat);//顯示符號(hào)位
   write_com(0xca);
   write_date(disdata[0]);//顯示百位
   write_com(0xcb);
   write_date(disdata[1]);//顯示十位
   write_com(0xcc);
   write_date(disdata[2]);//顯示個(gè)位
   write_com(0xcd);
   write_date(0x2e);//顯示小數(shù)點(diǎn)
   write_com(0xce);
   write_date(disdata[3]);//顯示小數(shù)位
   write_com(0xcf);
   write_date('C');
}

void yx()
{
init();
while(1)
{
   read_date();
   read_temp();//讀取溫度
   ds1820disp();//顯示
   key_scan();
   if(add==0)
      {
   delayms(30);
      if(add==0)
   {
      speaker=1;
   }

   }
if(dec==0)
      {
   delayms(30);
      if(dec==0)
   {
      speaker=1;
   }
   }
   if(djs==0)
   {
   delay(5);
      if(djs==0)
   {
   miaobiao();
   }
}
}

}

void main()
{
init();
Timer0_init();
// Init_DS1302();    //將1302初始化
   speaker=1;
   szdata1[1]=0x00;
   szdata1[2]=0x00;
   szdata1[3]=0x00;
   szdata1[4]=0x00;
   szdata1[5]=0x00;
   szdata1[6]=0x00;
   szdata1[7]=0x00;
yx();
}

J[YK%GI]I)PN0@OW[Z5}]%S.png (29.57 KB, 下載次數(shù): 28)

基于51單片機(jī)的多功能時(shí)鐘溫度計(jì).zip

902.42 KB, 下載次數(shù): 30, 下載積分: 黑幣 -5

作者: ssssmmyy 時(shí)間: 2020-1-8 21:09
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