藍橋杯STC15單片機溫度傳感器（內有初始化）

ID:425442 · 發表于 2018-11-13 09:12

#include <STC15F2K60S2.H>
#include <intrins.h>

typedef unsigned int u16;
typedef unsigned char u8;

sbit key=P1^4;

u8 code tab[]={0XC0,0XF9,0XA4,0XB0,0X99,0X92,0X82,0XF8,0X80,0X90,0XBF,0XFF};
u16 yi,er,san,si,wu,liu,qi,ba,jiu;

void Delay100us()
{
      unsigned char i, j;
      _nop_();
      _nop_();
      i = 2;
      j = 15;
      do
      {
            while (--j);
      } while (--i);
}

void Delay500us()
{
      unsigned char i, j;

      _nop_();
      _nop_();
      i = 6;
      j = 93;
      do
      {
            while (--j);
      } while (--i);
}

void delayms(int ms)
{
      int i,j;
      for(i=ms;i>0;i--)
            for(j=845;j>0;j--);
}

void chushihua()
{
      key=0;
      Delay500us();
      key=1;
      Delay500us();
}

void write(u8 dat)
{
      u16 i;
      for(i=0;i<8;i++)
      {
            key=0;
            key=dat&0x01;
            Delay100us();
key=1;
dat=dat>>1;
      }
}

u16 read()
{
      u16  i;
      u16 dat;
      for (i=0;i<8;i++)
      {
            key=0;
                     _nop_();
            dat=dat>>1;
            key=1;
            if(key==1)
            {
                              dat=dat|0x80;
                     }

                     Delay100us();
      }
      return dat;
}

u16 tempget()
{
      u16 temp;
      u16 low,height;

      chushihua();
      write(0xcc);
      write(0x44);
      Delay500us();
      Delay500us();/*yidian*/

      chushihua();
      write(0xcc);
      write(0xbe);

      low=read();
      height=read();

      temp=height<<4;
      temp=temp|(low>>4);

      return temp;
}

void allinit()
{
      P2=0XA0;
      P0=0X00;

      P2=0X80;
      P0=0XFF;

      P2=0XC0;
      P0=0XFF;
      P2=0XFF;
      P0=0XFF;
}

void desplay1 (u16 yi,u16 er)
{
                     P2=0XC0;
            P0=0X01;
            P2=0XFF;
            P0=tab[yi];
            delayms(1);

            P2=0XC0;
            P0=0X02;
            P2=0XFF;
            P0=tab[er];
            delayms(1);
}

void desplay2 (u16 san,u16 si)
{
                     P2=0XC0;
            P0=0X04;
            P2=0XFF;
            P0=tab[san];
            delayms(1);

            P2=0XC0;
            P0=0X08;
            P2=0XFF;
            P0=tab[si];
            delayms(1);
}

void desplay3 (u16 wu,u16 liu)
{
                     P2=0XC0;
            P0=0X10;
            P2=0XFF;
            P0=tab[wu];
            delayms(1);

            P2=0XC0;
            P0=0X20;
            P2=0XFF;
            P0=tab[liu];
            delayms(1);
}

void desplay4 (u16 qi,u16 ba)
{
                     P2=0XC0;
            P0=0X40;
            P2=0XFF;
            P0=tab[qi];
            delayms(1);

            P2=0XC0;
            P0=0X80;
            P2=0XFF;
            P0=tab[ba];
            delayms(1);
}

void main()
{
      u16 wendu;
      allinit();
               yi=11;
            er=11;
            san=11;
      si=11;
      wu=11;
      liu=0;
      qi=0;
      ba=0;
      while(1)
      {
            wendu=tempget();

liu=wendu/100;
            qi=wendu%100/10;
            ba=wendu%10;

            desplay1(yi,er);
            desplay2(san,si);
            desplay3(wu,liu);
            desplay4(qi,ba);
      }

}

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藍橋杯STC15單片機溫度傳感器（內有初始化）