#define uchar unsigned char   #define uint unsigned int   uchar i;   sbit lcdrs=" />

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児噐DS18B20議惷y楚狼y(t┓ng)O議畠殻Y創

戻宀smilelanlove2013-05-18 00:00

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恷煮基宛

  #include   #define uchar unsigned char   #define uint unsigned int   uchar i;   sbit lcdrs=P2^0;   sbit lcdrw=P2^1;   sbit lcden=P2^2;   uchar code t0[]="The temperature ";   uchar code t1[]=" is ";   uchar code wendu[]="0123456789";   sbit DQ = P3^3;   void delay(uchar z)   {   uchar x,y;   for(x=1000;x>1;x--)   for(y=z;y>1;y--);   }   void write_com(uchar com)   {   lcdrs=0;   P1=com;   delay(5);   lcden=1;   delay(5);   lcden=0;   }   void write_date(uchar date)   {   lcdrs=1;   P1=date;   delay(5);   lcden=1;   delay(5);   lcden=0;   }   void init_lcd()   {   lcden=0;   lcdrw=0;   write_com(0x38);   write_com(0x01);   write_com(0x0c);   write_com(0x06);   write_com(0x80);   for(i=0;i<16;i++)   {   write_date(t0[i]);   delay(0);   }   write_com(0x80+0x40);   for(i=0;i<16;i++)   {   write_date(t1[i]);   delay(0);   }   }   void tmpDelay(int num)   {   while(num--) ;   }   void Init_DS18B20()   {   unsigned char x=0;   DQ = 1;   tmpDelay(8);   DQ = 0;   tmpDelay(80);   DQ = 1;   tmpDelay(14);   x=DQ;   tmpDelay(20);   }   unsigned char ReadOneChar()   {   unsigned char i=0;   unsigned char dat = 0;   for (i=8;i>0;i--)   {   DQ = 0;   dat>>=1;   DQ = 1;   if(DQ)   dat|=0x80;   tmpDelay(4);   }   return(dat);   }   void WriteOneChar(unsigned char dat)   {   unsigned char i=0;   for (i=8; i>0; i--)   {   DQ = 0;   DQ = dat&0x01;   tmpDelay(5);   DQ = 1;   dat>>=1;   }   }   unsigned int Readtemp()   {   unsigned char a=0;   unsigned char b=0;   unsigned int t=0;   float tt=0;   Init_DS18B20();   WriteOneChar(0xCC);   WriteOneChar(0x44);   Init_DS18B20();   WriteOneChar(0xCC);   WriteOneChar(0xBE);   a=ReadOneChar();   b=ReadOneChar();   t=b;   t<<=8;   t=t|a;   tt=t*0.0625;   t= tt*10+0.5;   return(t);   }   void display()   {   unsigned int num;   unsigned int shi,ge,xiaoshu;   num=Readtemp();   shi=num/100;   ge=num/10%10;   xiaoshu=num%10;   write_com(0x80+0x40+5);   write_date(wendu[shi]);   write_com(0x80+0x40+6);   write_date(wendu[ge]);   write_com(0x80+0x40+7);   write_date(0x2e);   write_com(0x80+0x40+8);   write_date(wendu[xiaoshu]);   }   void main()   {   init_lcd();   while(1)   {   display();   delay(10);   }   }   厘嗤坿殻會o低杏

指基宀業m82016-05-18 00:00

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電楚1.6T 1.8T 
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