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C51 COMPILER V7.50   4                                                                     05/08/2008 15:16:11 PAGE 1   


C51 COMPILER V7.50, COMPILATION OF MODULE 4
OBJECT MODULE PLACED IN 4.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE 4.C BROWSE DEBUG OBJECTEXTEND SRC(.\4.SRC)

line level    source

   1          /*-------------------------------
   2          
   3          温度控制器V1.51
   4          显示为三个共阳极LED
   5          温度传感器用单总线DS18B20
   6          CPU为2051,三个按键,分别为UP,DOWN,SET
   7          温度调节上限为125度,下限为-55度
   8          只能用于单只18B20
   9          
  10          本软件仅供学习与参考,引用时请注明版权
  11          
  12          http://www.cdle.net
  13          明浩 2004/9/13
  14          pnzwzw@cdle.net
  15          -------------------------------*/
  16          
  17          #include <reg52.H>
  18          //#include<reg52.h>
  19          #include <intrins.h>
  20          #define uchar unsigned char
  21          #define uint unsigned int
  22          #define ulong unsigned long
  23          //#define Key_UP            P3^0    //上调温度
  24          //#define Key_DOWN          P3^1    //下调温度
  25          //#define Key_SET           P1^7    //设定键(温度设定,长按开电源)
  26          //#define RelayOutPort      P3^5    //继电器输出
  27          #define LEDPort           P0      //LED控制口
  28          //#define LEDOneC           P3^2    //LED DS1控制(百位)
  29          //#define LEDTwoC           P3^3    //LED DS2控制(十位)
  30          //#define LEDThreeC         P3^4    //LED DS3控制(个位)
  31           
  32          //#define TMPort                                                P1^0            //DS1820 DataPort
  33          sbit Key_UP =           P2^7;    //上调温度
  34          sbit Key_DOWN=          P2^6;    //下调温度
  35          sbit Key_SET=           P2^5;    //设定键(温度设定,长按开电源)
  36          sbit RelayOutPort=      P1^7;    //继电器输出
  37          //sbit LEDPort =          P0 ;     //LED控制口
  38          sbit LEDOneC =          P2^4;    //LED DS1控制(百位)
  39          sbit LEDTwoC =          P2^3 ;   //LED DS2控制(十位)
  40          sbit LEDThreeC=         P2^2 ;   //LED DS3控制(个位)
  41          sbit TMPort     =                                       P1^0;           //DS1820 DataPort
  42          sbit AA = P1^1;
  43          sbit BB = P1^2;
  44          sbit CC = P1^3;
  45          sbit key =      P3^3;
  46           
  47          
  48          
  49          
  50          unsigned char code LEDDis[]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90,0xFF,0xBF}; //0-9的LED笔划,
             -0xFF为空,0xF7为负号
  51          
  52          static unsigned char bdata StateREG;    //可位寻址的状态寄存器
  53          sbit DS1820ON = StateREG^0;               //DS1820是否存在
  54          sbit SetTF = StateREG^1;              //是否是在温度设置状态
C51 COMPILER V7.50   4                                                                     05/08/2008 15:16:11 PAGE 2   

  55          sbit KeySETDown = StateREG^2;         //是否已按过SET键标识
  56          sbit PowTF = StateREG^3;              //电源电源标识
  57          sbit KeyTF = StateREG^4;                                                        //键盘是否允许
  58          
  59          sbit KeySETDowning = StateREG^5;                        //SET是否正在按下
  60          static unsigned char bdata TLV _at_ 0x0029;         //温度变量高低位
  61          static unsigned char bdata THV _at_ 0x0028;
  62          static signed char TMV;       //转换后的温度值
  63          static unsigned char KeyV,TempKeyV;      //键值
  64          static signed char TMRomV _at_ 0x0027;    //高温限制
  65          static signed char TMSetV _at_ 0x0026;    //温度设定值
  66          static unsigned char KSDNum;    //SET键连按时的采集次数
  67          static unsigned char IntNum,IntNum2,IntNum3;    //中断发生次数,IntNum用于SET长按检测,IntNum2用于设定状态
             -时LED闪烁
  68          static signed char LED_One,LED_Two,LED_Three;  //LED的显示位 LED_One为十位,LED_Two为个位
  69          static unsigned char Sign; //负号标识
  70          
  71          void main(void)
  72          {
  73   1         
  74   1          void InitDS1820(void);    //定义函数
  75   1               
  76   1              void ROMDS1820(void);
  77   1              void TMVDS1820(void);
  78   1              void TMRDS1820(void);
  79   1              void TMWDS1820(void);
  80   1              void TMREDS1820(void);
  81   1              void TMERDS1820(void);
  82   1              void ReadDS1820(void);
  83   1              void WriteDS1820(void);
  84   1              void Delay_510(void);
  85   1              void Delay_110(void);
  86   1              void Delay_10ms(void);
  87   1              void Delay_4s(void);
  88   1              void V2ToV(void);
  89   1               
  90   1      
  91   1              StateREG = 0;   //初始化变量
  92   1              SetTF = 1;      
  93   1              PowTF = 1;                      //关电源
  94   1              THV = 0;
  95   1              TLV = 0;
  96   1              TMV = 0;
  97   1              KeyV = 0;
  98   1              TempKeyV = 0;
  99   1              KSDNum = 0;
 100   1              IntNum = 0;
 101   1              IntNum2 = 0;
 102   1              IntNum3 = 0;
 103   1              LED_One = 0;
 104   1              LED_Two = 0;
 105   1              key = 0;
 106   1      
 107   1              InitDS1820(); //初始化
 108   1              ROMDS1820();    //跳过ROM
 109   1              TMERDS1820();  //E2PRAM中温度上限值调入RAM
 110   1              InitDS1820(); //初始化
 111   1              ROMDS1820();    //跳过ROM
 112   1              TMRDS1820();    //读出温度指令
 113   1              ReadDS1820(); //读出温度值和上限值
 114   1              TMSetV = TMRomV;  //拷贝保存在DS18B20ROM里的上限值到TMSetV
 115   1           
C51 COMPILER V7.50   4                                                                     05/08/2008 15:16:11 PAGE 3   

 116   1              EA = 1;                                 //允许CPU中断
 117   1              ET0 = 1;                                //定时器0中断打开
 118   1              TMOD = 0x1;                     //设定时器0为模式1,16位模式
 119   1              TH0=0xB1;
 120   1              TL0=0xDF;                               //设定时值为20000us(20ms)
 121   1              TR0 = 1;                                //开始定时
 122   1              while(1);
 123   1      }
 124          
 125          //定时器0中断外理中键扫描和显示
 126          void KeyAndDis_Time0(void) interrupt 1 using 2
 127          {  
 128   1         
 129   1         TH0=0xB1;
 130   1              TL0=0xDF;                               //设定时值为20000us(20ms)
 131   1      
 132   1              LEDPort = 0xff;
 133   1        while(key);
 134   1       
 135   1        if (!Key_UP)
 136   1          //AA=0;
 137   1          KeyV = 1;
 138   1        if (!Key_DOWN)
 139   1          //AA=0;
 140   1          //BB=0;
 141   1               
 142   1          KeyV = 2;
 143   1        if (!Key_SET)
 144   1          //AA=0;
 145   1              //BB=0;
 146   1              //CC=0;
 147   1          
 148   1      
 149   1          KeyV = 3;
 150   1              //KeySETDowning = 0;  //清除
 151   1        if (KeyV != 0)      //有键按下
 152   1          {
 153   2            Delay_10ms();   //延时防抖  按下10ms再测
 154   2            if (!Key_UP)
 155   2              TempKeyV = 1;
 156   2            if (!Key_DOWN)
 157   2              TempKeyV = 2;
 158   2            if (!Key_SET)
 159   2              TempKeyV = 3;
 160   2            if (KeyV == TempKeyV)   //两次值相等为确定接下了键
 161   2              {
 162   3                if (KeyV == 3)      //按下SET键,如在SET状态就退出,否则进入
 163   3                  {
 164   4                                                              //KeySETDowning = 1; //表明SET正在按下
 165   4                    PowTF = 0;      //电源标识开
 166   4                                                              if (!KeyTF)
 167   4                      if (SetTF)
 168   4                                                                              {
 169   5                                      SetTF = 0;    //标识位标识退出设定
 170   5                                                                                      InitDS1820(); //初始化
 171   5                                                                              ROMDS1820();    //跳过ROM
 172   5                                                                              TMWDS1820();    //写温度上限指令
 173   5                                                                                      WriteDS1820();  //写温度上限到DS18B20ROM
 174   5                                                                                      WriteDS1820();  //写温度上限到DS18B20ROM
 175   5                                                                                      WriteDS1820();  //写温度上限到DS18B20ROM
 176   5                                                                                      InitDS1820(); //初始化
 177   5                                                                              ROMDS1820();    //跳过ROM
C51 COMPILER V7.50   4                                                                     05/08/2008 15:16:11 PAGE 4   

 178   5                                                                              TMREDS1820();   //温度上限值COPY回E2PRAM
 179   5                                                                              }
 180   4                      else
 181   4                              SetTF = 1;
 182   4                    if (!KeySETDown) //没有第一次按下SET时,KeySETDown标识置1
 183   4                      KeySETDown = 1;
 184   4                    else
 185   4                      KSDNum = KSDNum + 1;  //前一秒内有按过SET则开始计数
 186   4                  }
 187   3                if (SetTF)  //在SET状态下
 188   3                  {
 189   4                    if ((KeyV == 1) && (!KeyTF))
 190   4                      TMSetV = TMSetV + 1;    //上调温度
 191   4                    if ((KeyV == 2) && (!KeyTF))
 192   4                      TMSetV = TMSetV - 1;    //下调温度
 193   4                    if (TMSetV <= -55)          //限制温度上下限
 194   4                      TMSetV = -55;
 195   4                    if (TMSetV >= 125)
 196   4                      TMSetV = 125;
 197   4                  }
 198   3                      if ((!KeyTF) && (IntNum3 == 0)) KeyTF = 1; //当键盘处于可用时,锁定
 199   3              }
 200   2      
 201   2            if (KeySETDown)         //在2秒内按下了SET则计中断发生次数用于长按SET时计时用
 202   2              IntNum = IntNum + 1;  
 203   2            if (IntNum > 55)     //中断发生了55次时(大约1.2秒)75为1.5秒左右
 204   2              {
 205   3                IntNum = 0;
 206   3                                              KeySETDown = 0;
 207   3                if (KSDNum == 55)      //如一直长按了SET1.2秒左右
 208   3                  {
 209   4                    RelayOutPort = 1;  //关闭继电器输出 1
 210   4                    PowTF = 1;         //电源标识关 1
 211   4                    LEDOneC = 0;
 212   4                    LEDTwoC = 0;
 213   4                    LEDThreeC = 0;
 214   4                    LEDPort = 0xBF;      //显示"--"
 215   4                    Delay_4s();        //延时
 216   4                    LEDOneC = 1;
 217   4                    LEDTwoC = 1;      //关显示 1 1 1
 218   4                    LEDThreeC = 1;
 219   4                    Delay_4s();
 220   4                                                        IntNum = 0;
 221   4                                                        IntNum2 = 0;
 222   4                                                        IntNum3 = 0;
 223   4                  }
 224   3                KSDNum = 0;
 225   3               }
 226   2          }
 227   1        KeyV = 0;
 228   1        TempKeyV = 0;   //清空变量准备下次键扫描
 229   1      
 230   1        if (!PowTF)
 231   1          {
 232   2            InitDS1820();     //初始化
 233   2            ROMDS1820();      //跳过ROM
 234   2            TMVDS1820();  //温度转换指令
 235   2            
 236   2            Delay_510();
 237   2            Delay_510();  //延时等待转换完成
 238   2      
 239   2            InitDS1820(); //初始化
C51 COMPILER V7.50   4                                                                     05/08/2008 15:16:11 PAGE 5   

 240   2            ROMDS1820();      //跳过ROM
 241   2            TMRDS1820();      //读出温度指令
 242   2            ReadDS1820(); //读出温度值
 243   2      
 244   2            V2ToV();        //转换显示值
 245   2            if (TMV > TMSetV)   //根据采集到的温度值控制继电器
 246   2              {
 247   3                RelayOutPort = 0;
 248   3                          }
 249   2            else
 250   2                          {
 251   3                RelayOutPort = 1;
 252   3                        }
 253   2      
 254   2            if (SetTF) IntNum2 = IntNum2 + 1; //用于闪烁计数
 255   2            if (IntNum2 > 50 ) IntNum2 = 0;
 256   2                              if (KeyTF) IntNum3 = IntNum3 + 1; //用于防止按键连按
 257   2                              if (IntNum3 > 25) 
 258   2                                      {
 259   3                                              IntNum3 = 0;
 260   3                                              KeyTF = 0;
 261   3                                      }
 262   2      
 263   2            if ((SetTF) && (IntNum2 < 25)) goto InitEnd;  //计数在后半段时显示
 264   2            LEDPort = LED_One;
 265   2            LEDOneC = 0;
 266   2            Delay_510();
 267   2            LEDOneC = 1;    //显示百位数
 268   2            LEDPort = LED_Two;
 269   2            LEDTwoC = 0;
 270   2            Delay_510();
 271   2            LEDTwoC = 1;    //显示十位数
 272   2            LEDPort = LED_Three;
 273   2            LEDThreeC = 0;
 274   2            Delay_510();
 275   2            LEDThreeC = 1;    //显示个位数
 276   2          }
 277   1      InitEnd:;
 278   1      }
 279          
 280          void V2ToV(void)        //数值转换
 281          {
 282   1        TLV = TLV >> 4;                       
 283   1        THV = THV << 4;                       //读出的高低位数值移位
 284   1        TMV = TLV | THV;              //合并高低位放入TM为实际温度值
 285   1              Sign = 0;
 286   1        if (SetTF || !Key_SET)
 287   1          Sign = TMSetV >> 7;          //取符号
 288   1        else
 289   1           Sign = TMV >> 7;
 290   1      
 291   1              if (Sign)
 292   1                      {
 293   2                      if (SetTF || !Key_SET)
 294   2                                      {
 295   3                              LED_One = (~(TMSetV-1)) / 100;          //SET状态下显示设定值
 296   3                              LED_Two = ((~(TMSetV-1)) - LED_One * 100)/10;
 297   3                                  LED_Three = (~(TMSetV-1)) - LED_One * 100 - LED_Two * 10;
 298   3                                      }
 299   2                      else
 300   2                                      {
 301   3                              LED_One = (~(TMV-1)) / 100;                                                     //转换百位值            
C51 COMPILER V7.50   4                                                                     05/08/2008 15:16:11 PAGE 6   

 302   3                              LED_Two = ((~(TMV-1)) - LED_One * 100)/10;
 303   3                                  LED_Three = (~(TMV-1)) - LED_One * 100 - LED_Two * 10;
 304   3                                      }

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