基于单片机、JCM12232B液晶和DS18B20温度传感器的温度监测系统设计

基于单片机、JCM12232B液晶和DS18B20温度传感器的温度监测系统设计_ ...

设计一个独立式的温度监测系统，该温度监测系统能够对温度进行实时监测，并将温度信息在液晶显示器上实时显示出来。温度上下限可设置，温度越界报警。

本程序已xx调试通过，经实践证明是可用的！

#include <reg52.h>
#include <absacc.h>
#include <intrins.h>
#define uchar unsigned char
#define uint unsigned int

#define DATA P0 // LCD数据端口定义

/*-----------------------------------------------
                 管脚定义
-------------------------------------------------*/
sbit DQ=P3^5;     //DS18B20与单片机的接口
sbit LCD_E1 = P2^0;        //LCD上屏显示使能
sbit LCD_E2 = P2^1;        // LCD下屏显示使能
sbit LCD_RW = P2^2;        //LCD 读写控制端
sbit LCD_A0 = P2^3;        // LCD数据或指令寄存器选择端
sbit LCD_RST = P2^4;        // LCD复位端
sbit buzzer=P3^6;    //蜂鸣器接口

sbit SetSelt=P2^5;    //温度设置选择键，{dy}次按下设置温度上限，第二次按下时设置温度下限，第三次按下时显示恢复正常
sbit PlusTempSet=P2^6;   //设置温度温度上下限加
sbit MinusTempSet=P2^7;   //设置温度温度上下限减
/*------------------------------------------------
                 定义变量
-------------------------------------------------*/
bit Flag18b20,DrawFlag;
uchar ge,shi,HZNum,Temperature,MaxTemp=38,MinTemp=22,SetSeltnum;
/*ge,shi为温度的个位和十位；HZNum为初始化汉字的数目；
Temperature为当前采集到的温度值；MaxTemp,MinTemp为温度的上限和下限；SetSeltnum为温度设置模式选择*/
uint TimeX;//时间坐标

/*头文件*/
#include "Table.h"
#include "Delay.h"
#include "LCD12232.h"
#include "DS18B20.h"
#include "Init.h"
#include "TempSet.h"

/*-----------------------------------------
                  主函数
------------------------------------------*/
main()
{
Init();
while(1)
{
   keyscan();
   if(DrawFlag==1)
   {
    DrawFlag=0;
    DrawBmp(98,0,8,NumTab+shi*16);
    DrawBmp(106,0,8,NumTab+ge*16);//温度显示

Draw_Wave(TimeX,(1.0/2)*(Temperature-MinTemp),DotTable);//绘制实时曲线
}
}

}

/*----------------------------------------------
定时器0的中断服务程序
-----------------------------------------------*/
void timer0() interrupt 1
{
uchar count;
TH0=(65535-50000)/256;
TL0=(65535-50000)%256;
count++;

if (count==20)
{
count=0;
DrawFlag=1;

   Temperature=ReadTemperature();
   ge=(uchar) Temperature%10;
   shi=(uchar) Temperature/10;

TimeX++;

   if(TimeX>=121)//曲线显示满屏时，清下半屏并重新绘制实时曲线
   {
    TimeX=0;
    ClaerDS();
   }
}

if(Temperature>MaxTemp||Temperature<MinTemp)//温度过限报警函数（蜂鸣器）
{
   buzzer=1;
}
   else
   {
    buzzer=0;
   }
}

"Table.h"

/*本头文件中存放JCM12232B液晶显示所用到的字符库*/

/*------------------------------------------------
温度数字显示表
--------------------------------------------------*/

uchar code NumTab[]=
{

0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,
0x00,0x0F,0x10,0x20,0x20,0x10,0x0F,0x00, /*"0",0*/

0x00,0x10,0x10,0xF8,0x00,0x00,0x00,0x00,
0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00, /*"1",1*/

0x00,0x70,0x08,0x08,0x08,0x88,0x70,0x00,
0x00,0x30,0x28,0x24,0x22,0x21,0x30,0x00, /*"2",2*/

0x00,0x30,0x08,0x88,0x88,0x48,0x30,0x00,
0x00,0x18,0x20,0x20,0x20,0x11,0x0E,0x00, /*"3",3*/

0x00,0x00,0xC0,0x20,0x10,0xF8,0x00,0x00,
0x00,0x07,0x04,0x24,0x24,0x3F,0x24,0x00, /*"4",4*/

0x00,0xF8,0x08,0x88,0x88,0x08,0x08,0x00,
0x00,0x19,0x21,0x20,0x20,0x11,0x0E,0x00, /*"5",5*/

0x00,0xE0,0x10,0x88,0x88,0x18,0x00,0x00,
0x00,0x0F,0x11,0x20,0x20,0x11,0x0E,0x00, /*"6",6*/

0x00,0x38,0x08,0x08,0xC8,0x38,0x08,0x00,
0x00,0x00,0x00,0x3F,0x00,0x00,0x00,0x00, /*"7",7*/

0x00,0x70,0x88,0x08,0x08,0x88,0x70,0x00,
0x00,0x1C,0x22,0x21,0x21,0x22,0x1C,0x00, /*"8",8*/

0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,
0x00,0x00,0x31,0x22,0x22,0x11,0x0F,0x00, /*"9",9*/

0x00,0x1C,0xF0,0x08,0x08,0x08,0x30,0x00,
0x00,0x00,0x0F,0x10,0x20,0x30,0x10,0x00, /*"℃",10*/

0xFF,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,
0xFF,0xFF,0x00,0x00,0x00,0x00,0x00,0x00, /*"|",11*/

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 /*" ","12"*/
};

/*---------------------------------------------------
曲线显示表
----------------------------------------------------*/

uchar code DotTable[32]=
{
0x80,0x00,0x40,0x00,0x20,0x00,0x10,0x00,
0x08,0x00,0x04,0x00,0x02,0x00,0x01,0x00,
0x00,0x80,0x00,0x40,0x00,0x20,0x00,0x10,
0x00,0x08,0x00,0x04,0x00,0x02,0x00,0x01

};
/*----------------------------------------------------
                     汉字显示表
-----------------------------------------------------*/
uchar code HZTab[]=
{
0x10,0x21,0x86,0x70,0x00,0x7E,0x4A,0x4A,
0x4A,0x4A,0x4A,0x7E,0x00,0x00,0x00,0x00,
0x02,0xFE,0x01,0x40,0x7F,0x41,0x41,0x7F,
0x41,0x41,0x7F,0x41,0x41,0x7F,0x40,0x00, /*"温",0*/

0x00,0x00,0xFC,0x04,0x24,0x24,0xFC,0xA5,
0xA6,0xA4,0xFC,0x24,0x24,0x24,0x04,0x00,
0x80,0x60,0x1F,0x80,0x80,0x42,0x46,0x2A,
0x12,0x12,0x2A,0x26,0x42,0xC0,0x40,0x00, /*"度",1*/

0x00,0x00,0x7E,0x00,0x00,0xFF,0x20,0x10,
0x0F,0x1A,0x68,0xC8,0x08,0x08,0x08,0x00,
0x40,0x40,0x7E,0x42,0x42,0x7E,0x42,0x42,
0x7E,0x42,0x42,0x42,0x7E,0x40,0x40,0x00, /*"监",2*/

0x08,0x31,0x86,0x60,0x00,0xFE,0x02,0xF2,
0x02,0xFE,0x00,0xF8,0x00,0x00,0xFF,0x00,
0x04,0xFC,0x03,0x00,0x80,0x47,0x30,0x0F,
0x10,0x67,0x00,0x07,0x40,0x80,0x7F,0x00, /*"测",3*/

0x00,0x00,0x02,0x22,0xB2,0xAA,0x66,0x62,
0x22,0x11,0x4D,0x81,0x01,0x01,0x00,0x00,
0x00,0x40,0x21,0x13,0x09,0x05,0x41,0x81,
0x7F,0x01,0x05,0x09,0x13,0x62,0x00,0x00, /*"系",4*/

0x20,0x30,0x2C,0xA3,0x60,0x10,0x84,0xC4,
0xA4,0x9D,0x86,0x84,0xA4,0xC4,0x84,0x00,
0x20,0x22,0x23,0x12,0x12,0x92,0x40,0x30,
0x0F,0x00,0x00,0x3F,0x40,0x41,0x70,0x00, /*"统",5*/

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFE,
0x40,0x40,0x40,0x40,0x40,0x00,0x00,0x00,
0x00,0x40,0x40,0x40,0x40,0x40,0x40,0x7F,
0x40,0x40,0x40,0x40,0x40,0x60,0x40,0x00, /*"上",6*/

0xFE,0x02,0x32,0x4E,0x82,0x00,0xFE,0x4A,
0xCA,0x4A,0x4A,0x4A,0x7E,0x00,0x00,0x00,
0xFF,0x00,0x02,0x04,0x03,0x00,0xFF,0x40,
0x20,0x03,0x0C,0x12,0x21,0x60,0x20,0x00, /*"限",7*/

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x36,0x36,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /*"：",8*/

0x00,0x02,0x02,0x02,0x02,0x02,0x02,0xFE,
0x22,0x62,0xC2,0x82,0x02,0x03,0x02,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x7F,
0x00,0x00,0x01,0x00,0x00,0x00,0x00,0x00   /*"下",9*/
};

"Delay.h"

/*本头文件中定义了一些常用的延时函数*/

/*---------------------------------------------------
延时函数，供18b20采集温度等待的调用
----------------------------------------------------*/
void delay(uint x)
{
uint i;
while(x-->0)
for(i=0;i<110;i++);

}

/*----------------------------------------
18B20延迟函数
------------------------------------------*/
void delay18B20(uint i)
{
while(i--);
}

"LCD12232.h"

/*本头文件定义了对JCM12232B操作所用到的函数*/
/*----------------------------------------------------------------------------
调用方式：void OutMI(uchar i)
函数说明：发指令i到主窗口。（内函数，私有，用户不直接调用）
------------------------------------------------------------------------------*/
void OutMI(uchar i)
{
LCD_E2=0;
_nop_();
_nop_();
LCD_A0=0;
LCD_RW=0;
_nop_();
_nop_();
LCD_E2=1;
_nop_();
_nop_();
DATA=i;
_nop_();
_nop_();
LCD_E2=0;
_nop_();
_nop_();
}

/*--------------------------------------------------------------------------------
调用方式：void OutMD(uchar i)
函数说明：发数据i到主窗口。（内函数，私有，用户不直接调用）
---------------------------------------------------------------------------------*/
void OutMD(uchar i)
{

LCD_E2=0;
_nop_();
_nop_();
LCD_A0=1;
LCD_RW=0;
_nop_();
_nop_();
LCD_E2=1;
_nop_();
_nop_();
DATA=i;
_nop_();
_nop_();
LCD_E2=0;
_nop_();
_nop_();
}

/*--------------------------------------------------------------------------------
调用方式：void OutSI(uchar i)
函数说明：发指令i到从窗口。（内函数，私有，用户不直接调用）
---------------------------------------------------------------------------------*/
void OutSI(uchar i)
{
LCD_E1=0;
_nop_();
_nop_();
LCD_A0=0;
LCD_RW=0;
_nop_();
_nop_();
LCD_E1=1;
_nop_();
_nop_();
DATA=i;
_nop_();
_nop_();
LCD_E1=0;
_nop_();
_nop_();
}

/*--------------------------------------------------------------------------------
调用方式：void OutSD(uchar i)
函数说明：发数据i到从窗口。（内函数，私有，用户不直接调用）
---------------------------------------------------------------------------------*/
void OutSD(uchar i)
{
LCD_E1=0;
_nop_();
_nop_();
LCD_A0=1;
LCD_RW=0;
_nop_();
_nop_();
LCD_E1=1;
_nop_();
_nop_();
DATA=i;
_nop_();
_nop_();
LCD_E1=0;
_nop_();
_nop_();
}

/*--------------------------------------------------------------------------------
调用方式：void LcdIni(void)
函数说明：12232点阵液晶初始化，开机后仅调用一次。
---------------------------------------------------------------------------------*/
void LcdIni(void)
{
LCD_RST=0;
delay(100);
LCD_RST=1; //LCD复位

OutMI(0XE2);OutSI(0XE2);//复位
OutMI(0XAE);OutSI(0XAE);//POWER SAVE
OutMI(0XA4);OutSI(0XA4);//动态驱动
OutMI(0XA9);OutSI(0XA9);//1/32占空比
OutMI(0XA0);OutSI(0XA0);//时钟线输出，设置显示方向
OutMI(0XEF);OutSI(0XEF);//写模式
OutMI(0X00);OutMI(0XC0);
OutSI(0X00);OutSI(0XC0);
OutMI(0XAF);OutSI(0XAF);
}

/*--------------------------------------------------------------------------------
调用方式：void SetMP(uchar pageM)
函数说明：设置主显示页为0－3页。（内函数，私有，用户不直接调用）
---------------------------------------------------------------------------------*/
void SetMP(uchar pageM)
{
OutMI(0xB8|pageM);
}

/*--------------------------------------------------------------------------------
调用方式：void SetSP(uchar pageS)
函数说明：设置从显示页为0－3页。（内函数，私有，用户不直接调用）
---------------------------------------------------------------------------------*/
void SetSP(uchar pageS)
{
OutSI(0xB8|pageS);
}

/*--------------------------------------------------------------------------------
调用方式：void SetPage(uchar page0,uchar page1)
函数说明：同时设置主从显示页为0－3页。（内函数，私有，用户不直接调用）
---------------------------------------------------------------------------------*/
void SetPage(uchar pageM,uchar pageS)
{
OutMI(0xB8|pageS);
OutSI(0xB8|pageM);
}

/*--------------------------------------------------------------------------------
调用方式：void SetMA(uchar AddressM)
函数说明：设置右半窗列地址为61－121。（内函数，私有，用户不直接调用）
---------------------------------------------------------------------------------*/
void SetMA(uchar AddressM)
{
OutMI(AddressM&0x7F);
}
/*--------------------------------------------------------------------------------
调用方式：void SetSA(uchar AddressS)
函数说明：设置左半窗列地址为0－60。（内函数，私有，用户不直接调用）
---------------------------------------------------------------------------------*/
void SetSA(uchar AddressS)
{
OutSI(AddressS&0x7F);
}

/*--------------------------------------------------------------------------------
调用方式：void SetAddress(uchar address0,uchar address1)
函数说明：同时设置左半窗和右半窗列地址为0－121。（内函数，私有，用户不直接调用）
---------------------------------------------------------------------------------*/
void SetAddress(uchar address0,uchar address1)
{
OutMI(address1&0x7F);
OutSI(address0&0x7F);
}

/*--------------------------------------------------------------------------------
调用方式：void PutCharS(uchar ch)
函数说明：在左页当前地址画一个字节8个点。（内函数，私有，用户不直接调用）
---------------------------------------------------------------------------------*/
void PutCharS(uchar ch)
{
OutSD(ch);
}

/*--------------------------------------------------------------------------------
调用方式：void PutCharM(uchar ch)
函数说明：在右页当前地址画一个字节8个点。（内函数，私有，用户不直接调用）
---------------------------------------------------------------------------------*/
void PutCharM(uchar ch)
{
OutMD(ch);
}

/*--------------------------------------------------------------------------------
调用方式：void DrawBmp(uchar x,bit layer,uchar width,uchar *bmp)
函数说明：写一个字符，横坐标是x0，layer表示上下窗，layer=0为上窗，layer=1为下窗，
width是字符的宽，都是16，bmp是字符指针，使用zimo21软件，采用纵向取模得到bmp数据。
---------------------------------------------------------------------------------*/
void DrawBmp(uchar x0,bit layer,uchar width,uchar *bmp)
{
uchar x,address,i=0; //address表示显存的物理地址
uchar page=0;
bit window=0; //page表示上下两页，window表示左右两半屏

if (layer) page=2;

for (x=x0;x<x0+width;x++)
{
   if (x>61) //判断是否到右半屏
{
    window=1;//对右窗操作
    address=x%61;
   }
    else
    {
     address=x;
     SetSP(page);
     SetSA(address);
    }

   if (window)   //画汉字的上半部分
   {
    SetMP(page);
    SetMA(address);
   PutCharM(bmp[i]);//在右页当前地址画一个字节8个点
   }
     else
     {
      PutCharS(bmp[i]);//在左页当前地址画一个字节8个点
     }

   if (window) //画汉字的下半部分
   {
    SetMP(page+1);
    SetMA(address);
    PutCharM(bmp[i+width]);
   }
     else
     {
      SetSP(page+1);
      SetSA(address);
      PutCharS(bmp[i+width]);
     }
   i++;
}
}

/*---------------------------------------------
曲线绘制函数
----------------------------------------------*/
void Draw_Wave(uchar X,uchar Y,uchar *pTab)
{
uchar page=2;

if(Y>15)//温度上限越屏处理
Y=15;
if(Y<0)//温度下限越屏处理
Y=0;

if (X>61)
   {
   X=X%61;
   SetMP(page+1);
   SetMA(X);
   OutMD(pTab[2*Y]);

   SetMP(page);
   SetMA(X);
   OutMD(pTab[2*Y+1]);
}

   else
   {
    SetSP(page+1);
    SetSA(X);
    OutSD(pTab[2*Y]);

    SetSP(page);
    SetSA(X);
    OutSD(pTab[2*Y+1]);
   }
}

/*--------------------------------------------
调用方式：void clrscr(void)
函数说明：清整个屏
----------------------------------------------*/
void clrscr(void)
{
uchar i;
uchar page;
for (page=0;page<4;page++)
{
   SetPage(page,page);
   SetAddress(0,0);
   for (i=0;i<61;i++)
   {
    PutCharS(0);
    PutCharM(0);
   }
}
}

/*----------------------------------------
         图形采集满屏时，清下屏
-----------------------------------------*/
void ClaerDS()
{
uchar i;
uchar page;
for (page=2;page<4;page++)
{
   SetPage(page,page);
   SetAddress(0,0);
   for (i=0;i<61;i++)
   {
    PutCharS(0);
    PutCharM(0);
   }
}
}

"DS18B20.h"

/*本头文件定义对DS18B20操作所用到的函数*/

/*----------------------------------------
DS18B20初始化函数
-----------------------------------------*/
Init_DS18B20(void)
{

DQ = 1;    //DQ复位
delay18B20(5); //稍做延时
DQ = 0;    //单片机将DQ拉低
delay18B20(80); //xx延时大于480us
DQ = 1;    //拉高总线
delay18B20(15);
Flag18b20=DQ;      //稍做延时后如果Flag18b20=0，则初始化成功，Flag18b20=1则初始化失败
delay18B20(20);
DQ=1;
}

/*----------------------------------------
从DS18B20读出一个字节的数据
-----------------------------------------*/
ReadOneChar(void)
{
uchar i=0;
uchar dat = 0;

for (i=8;i>0;i--)
{
   DQ = 0; // 给脉冲信号
//   delay18B20(10);
   dat>>=1;
   DQ = 1; // 给脉冲信号
   if(DQ)
    dat|=0x80;
   delay18B20(5);
}
return(dat);
}

/*-----------------------------------------
写一个字节的数据到DS18B20
----------------------------------------*/
WriteOneChar(uchar dat)
{
uchar i=0;

for (i=8;i>0;i--)
{
   DQ = 0;
//   delay18B20(10);
   DQ = dat&0x01;
   delay18B20(5);
   DQ = 1;
   dat>>=1;
}

delay18B20(5);
}

/*--------------------------------------------
配置DS18B20
--------------------------------------------*/
void Config18b20()
{
Init_DS18B20();
WriteOneChar(0xcc); //skip rom
WriteOneChar(0x4e); //write scratchpad
WriteOneChar(0x55); //上限
WriteOneChar(0x00); //下限

WriteOneChar(0x1f); //set 9 bit (0.5)
Init_DS18B20();
WriteOneChar(0xcc); //skip rom
WriteOneChar(0x48); //保存设定值
Init_DS18B20();
WriteOneChar(0xcc); //skip rom
WriteOneChar(0xb8); //回调设定值
}

/*--------------------------------------------
                  读取采集到温度
---------------------------------------------*/
uint ReadTemperature()
{
uchar a,b;
uint g;
Config18b20();//配置18b20
Init_DS18B20();//18b20初始化
WriteOneChar(0xCC); // 跳过读序号列号的操作
WriteOneChar(0x44); // 启动温度转换
delay(200); //延时足够长，延时短会出现{dy}次采集温度为85℃情况
Init_DS18B20();
WriteOneChar(0xCC); //跳过读序号列号的操作
WriteOneChar(0xBE); //读取温度寄存器等（共可读9个寄存器）前两个就是温度
a=ReadOneChar();   //读取温度值低位
b=ReadOneChar();   //读取温度值高位
DQ=1;
g=b<<8;            //最终数据在a和b中
g=g|a;
g=g*0.0625;         //这是转换成具体温度值，1点代表0.0625°C
return g;
}

"Init.h"

/*本头文件定义了整个系统初始化时所用到的函数*/

/*----------------------------------------------
定时器0的初始化
-----------------------------------------------*/
void Timer0Init()
{
TMOD=0x01;
TH0=(65535-50000)/256;
TL0=(65535-50000)%256;
EA=1;
ET0=1;
TR0=1;
}

void Init() //系统的初始化
{
LcdIni();
clrscr();

for(HZNum=0;HZNum<6;HZNum++)
DrawBmp(16*HZNum,0,16,HZTab+32*HZNum); //初始化"温度检测系统"六个汉字

DrawBmp(96,0,8,NumTab+16*11);//初始化"|"字符
DrawBmp(114,0,8,NumTab+16*10);//初始化"℃"字符
Timer0Init();//定时器0初始化
ClaerDS();//清下半屏
}

"TempSet.h"

/*本头文件定义了温度上下限设置操作所用到的函数*/

void InitSetTemp()//设置温度的初始化函数
{
DrawBmp(0,1,16,HZTab+32*6);
DrawBmp(16,1,16,HZTab+32*7);
DrawBmp(32,1,16,HZTab+32*8);

DrawBmp(36,1,8,NumTab+16*(MaxTemp/10));
DrawBmp(44,1,8,NumTab+16*(MaxTemp%10));
DrawBmp(52,1,8,NumTab+16*10);

DrawBmp(62,1,16,HZTab+32*9);
DrawBmp(78,1,16,HZTab+32*7);
DrawBmp(94,1,16,HZTab+32*8);

DrawBmp(98,1,8,NumTab+16*(MinTemp/10));
DrawBmp(106,1,8,NumTab+16*(MinTemp%10));
DrawBmp(114,1,8,NumTab+10*16);
}

void SetTempMax()//设置温度上限的函数
{

DrawBmp(36,1,8,NumTab+16*(MaxTemp/10));
DrawBmp(44,1,8,NumTab+16*(MaxTemp%10));
}

void SetTempMin()//设置温度下限的函数
{
DrawBmp(98,1,8,NumTab+16*(MinTemp/10));
DrawBmp(106,1,8,NumTab+16*(MinTemp%10));
}

void keyscan()//键盘扫描程序
{
if(SetSelt==0)//SetSelt键扫描
{
   delay(5);//按键消抖
   if(SetSelt==0)
   {
//    TR0=0; //关闭定时器,停止温度采集
    SetSeltnum++;   //记录SetSelt被按下的次数
    while(!SetSelt);//等待键的释放
    InitSetTemp();
    if(SetSeltnum==3)//第三次按下设置键
    {
     SetSeltnum=0;
     ClaerDS();//清下半屏
     TimeX=0;//从零开始绘图
//     TR0=1;   //开定时器，继续温度采集
    }
   }
}

if(PlusTempSet==0)    //PlusTempSe键扫描
{
   delay(5);    //按键消抖
   if(PlusTempSet==0)
   {
    while(!PlusTempSet);    //松手检测

      if(SetSeltnum==1)
    {
     MaxTemp++;
     SetTempMax();
    }
     else if(SetSeltnum==2)
     {
      MinTemp++;
      SetTempMin();
     }
   }
}

if(MinusTempSet==0)    //MinusTempSet按键扫描
{
     delay(5);    //按键消抖
     if(MinusTempSet==0)
     {
      while(!MinusTempSet);    //松手检测

      if(SetSeltnum==1)
    {
     MaxTemp--;
     SetTempMax();
    }
     else if(SetSeltnum==2)
     {
      MinTemp--;
      SetTempMin();
     }
   }
}
}

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