51單片機多路溫度采集仿真加程序 2路LM35+3路18B20

ID:68739 · 發表于 2017-11-27 16:42

用51單片機實現的2路LM35模擬測溫，3路DS18B20數字測溫開關切換顯示的時哪路溫度，花了我很多時間.
仿真原理圖如下（proteus仿真工程文件可到本帖附件中下載）

單片機源程序如下:

#include <REGX51.H>
#include "1602.H"
#include "DS18B20.h"
extern unsigned char ReadAdc0832(unsigned char channel);
extern void DelayMs(unsigned char t);
unsigned int Temp[5];//5路溫度值溫度放大10倍
int DS18B20DATA[3];//DS18B20讀到的16位數據
code unsigned char DecimalNum[16]={0,1,1,2,3,3,4,4,5,6,6,7,8,8,9,9};//DS18B20小數部分對應的數
unsigned char code DuanMa[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
sbit LED=P3^1;
sbit BEEP=P3^2;
sbit LE=P3^0;
sbit Key=P1^0;
unsigned char CurID;
// 顯示段碼值01234567
unsigned char LCDbuf[16];
void LM35Read(void)
{
Temp[0]=ReadAdc0832(0)*10;
DelayMs(10);
Temp[1]=ReadAdc0832(1)*10;
DelayMs(10);
}
void DS18B20Read()
{
gettemp(DS18B20DATA);
Temp[2]=(DS18B20DATA[0]>>4)*10+DecimalNum[DS18B20DATA[0]&0x0f];
Temp[3]=(DS18B20DATA[1]>>4)*10+DecimalNum[DS18B20DATA[1]&0x0f];
Temp[4]=(DS18B20DATA[2]>>4)*10+DecimalNum[DS18B20DATA[2]&0x0f];//環境溫度
}
//格式化數據
void ForamtData(int Data,unsigned char *Str)
{
unsigned char t;
t=Data/10;
if(t>99)
{
*Str++='1';
*Str++=(t%100)/10+0x30;
*Str++=(t%10)+0x30;
*Str++='.';
*Str++=Data%10+0x30;
}
if((t>9)&&(t<100))
{
*Str++=' ';
*Str++=t/10+0x30;
*Str++=(t%10)+0x30;
*Str++='.';
*Str++=Data%10+0x30;
}
if((t<10)&&(t>0))
{
*Str++=' ';
*Str++=' ';
*Str++=(t%10)+0x30;
*Str++='.';
*Str++=Data%10+0x30;
}
if(t==0)
{
*Str++=' ';
*Str++=' ';
*Str++=' ';
*Str++='.';
*Str++=Data%10+0x30;
}
*Str=0;
}
//報警
void Warning(void)
{
unsigned char flag;//,//i;
static unsigned int a,b;
flag=0;
a=Temp[4]+50;
b=Temp[4]-50;
//for(i=0;i<5;i++)
//{
flag=(Temp[CurID]>(a));
flag=(Temp[CurID]<b)||flag;
BEEP=!flag;
LED=!flag;
//}
}
void main(void)
{
LE=1;
// _ASM
// {
// mov,r0,#1;
// }
P0=DuanMa[CurID+1];
LE=0;
LCD_Init();
LCD_Write_String(0,0,"Envir: C");
LCD_Write_String(5,1,"C ");
LED=0;
CurID=3;
while(1)
{
LM35Read();
DS18B20Read();
LE=1;
P0=DuanMa[CurID+1];
LE=0;
……………………
…………限于本文篇幅余下代碼請從51黑下載附件…………