main.c

18b20温度测量控制程序

#include"reg51.h"
#include"address.h"
#include"2-16.h"
#include"18b20.h"
#define uint  unsigned int
#define uchar unsigned char 
uchar code tab[]={'0','1','2','3','4','5','6','7','8','9'};
void main()
{
uchar i,high,tem[9],temp[11];//temp[11]是LCD显示的缓冲区
uint low;
temp[4]='.';
temp[9]=0xDf;
temp[10]='C';
initlcd();			
TemperatuerResult()	;
while(1)
{
	get();			  //把温度放进变量Temperature中
	if(Temperature&0xf800)temp[0]='-';else temp[0]='+';
	Temperature&=0x07ff;
	high=Temperature>>4;
	low=Temperature&0x0f;
	low*=625;
	tem[1]=high/100;
	high=high%100;
	tem[2]=high/10;
	tem[3]=high%10;
	tem[5]=low/1000;
	low%=1000;
	tem[6]=low/100;
	low%=100;
	tem[7]=low/10;	 
	tem[8]=low%10;
	
	for(i=1;i!=9;i++){if(i==4)continue ;temp[i]=tab[tem[i]];}
	printf(temp,11);
	LEDDATA=0;
}

}