thermometor_main.lst

温度测量与显示

C51 COMPILER V7.06   THERMOMETOR_MAIN                                                      06/07/2007 19:33:19 PAGE 1   


C51 COMPILER V7.06, COMPILATION OF MODULE THERMOMETOR_MAIN
OBJECT MODULE PLACED IN Thermometor_Main.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE Thermometor_Main.C BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          #define uchar   unsigned char
   2          #define uint    unsigned int
   3          #define ulong   unsigned long
   4          
   5          #include<REG52.h>
   6          sbit    Sign_Port       =P3^0;
   7          sfr             Dat_Port        =0x80;  
   8          sfr             Cs_Port         =0xa0;  
   9          sbit    TMDAT           = P3^3; 
  10          uchar   code table[11]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,
  11                                    0x7F,0x6F,0x00};
  12          uchar   tmpbuf[5];
  13          
  14          void Delay(int useconds)
  15                   {
  16   1                      int s;
  17   1                      for (s=0; s<useconds;s++);
  18   1              }
  19          
  20          uchar   Reset_Bus(void)
  21                  {
  22   1                      uchar   presence;
  23   1                      TMDAT = 0;                      
  24   1                      Delay(29);                              
  25   1                      TMDAT = 1;                              
  26   1                      Delay(3);                       
  27   1                      presence = TMDAT;               
  28   1                      Delay(25);                      
  29   1                      return(presence);       
  30   1      }
  31          
  32          void Write_Bit(char bitval)
  33                  {
  34   1                      TMDAT = 0;                              
  35   1                      if(bitval==1) TMDAT =1;
  36   1                      Delay(5);                               
  37   1                      TMDAT = 1;              
  38   1              }
  39          void Write_Byte(char val)
  40                   {
  41   1                      uchar   i;
  42   1                      uchar   temp;
  43   1                      for (i=0; i<8; i++) {   
  44   2                      temp = val>>i;          
  45   2                      temp &= 0x01;           
  46   2                      Write_Bit(temp); 
  47   2              }
  48   1              Delay(5);
  49   1      }
  50          
  51          
  52          uchar   Read_Bit(void) 
  53                  {
  54   1                      uchar   i;
  55   1                      TMDAT = 0;               
C51 COMPILER V7.06   THERMOMETOR_MAIN                                                      06/07/2007 19:33:19 PAGE 2   

  56   1                      TMDAT = 1;                      
  57   1                      for (i=0; i<3; i++); 
  58   1                      return(TMDAT);          
  59   1              }
  60          
  61          
  62          uchar   Read_Byte(void)
  63           {
  64   1              uchar   i;
  65   1              uchar   value = 0;
  66   1              for (i=0;i<8;i++)                               
  67   1               {                              
  68   2                      if(Read_Bit()) value|=0x01<<i;  
  69   2                      Delay(6);                                       
  70   2              }
  71   1              return(value);
  72   1      }
  73          
  74          
  75          uint DS18B20_Tmp_Read(void)
  76           {
  77   1              uint    TEMP;
  78   1              uchar   TEMP_LSB,TEMP_MSB;
  79   1              Reset_Bus();
  80   1              Write_Byte(0xCC);                               
  81   1              Write_Byte(0x44);                               
  82   1              Delay(5);                                                                                               
  83   1              Reset_Bus();                                    
  84   1              Write_Byte(0xCC);                               
  85   1              Write_Byte(0xBE);                               
  86   1              TEMP_LSB = Read_Byte(); 
  87   1              TEMP_MSB = Read_Byte(); 
  88   1              TEMP=TEMP_MSB;
  89   1              TEMP=TEMP<<8;
  90   1              TEMP=TEMP|TEMP_LSB;
  91   1              return  TEMP;
  92   1      }
  93          
  94          void    Display(void)
  95                  {
  96   1                      uchar   i,j,temp=0xef;          
  97   1                      for(i=0;i<5;i++)
  98   1                              {
  99   2                                      Cs_Port=0xff;
 100   2                                      j=tmpbuf[i];
 101   2                                      if(temp==0xFB)
 102   2                                      Dat_Port=(table[j]|0x80);
 103   2                                      else
 104   2                                      Dat_Port=table[j];                              
 105   2                                      Cs_Port=temp;
 106   2                                      Delay(5);
 107   2                                      Cs_Port=0xff;
 108   2                                      temp=temp>>1;
 109   2                                      temp=temp|0x80;                         
 110   2                              }
 111   1              }
 112          
 113          void    main(void)
 114                  {
 115   1                      uint    tmp;
 116   1                      uchar   i,tmph,tmpl,sign;
 117   1                      while(1)
C51 COMPILER V7.06   THERMOMETOR_MAIN                                                      06/07/2007 19:33:19 PAGE 3   

 118   1                              {
 119   2                                      tmp=DS18B20_Tmp_Read();
 120   2                                      sign=(uchar)((tmp>>8)&0xf0);
 121   2                                      if(sign==0xf0)                                  
 122   2                                              {
 123   3                                                      tmp=(~tmp)+1;
 124   3                                                      Sign_Port=0;                    
 125   3                                              }
 126   2                                      else    Sign_Port=1;                            
 127   2                                      tmpl=(uchar)(tmp&0x0f);                 
 128   2                                      tmph=(uchar)((tmp>>4)&0xff);
 129   2                                      tmpl=tmpl*6.25;
 130   2                                      tmpbuf[4]=tmpl%10;
 131   2                                      tmpbuf[3]=tmpl/10;
 132   2                                      tmpbuf[2]=tmph%10;
 133   2                                      tmpbuf[1]=(tmph%100)/10;
 134   2                                      tmpbuf[0]=tmph/100;
 135   2                                      if(tmpbuf[0]==0)                
 136   2                                                      {
 137   3                                                              tmpbuf[0]=10;
 138   3                                                              if(tmpbuf[1]==0)
 139   3                                                                      tmpbuf[1]=10;
 140   3                                                      }                               
 141   2                                      for(i=0;i<20;i++)               
 142   2                                              {
 143   3                                                      Display();
 144   3                                                                              
 145   3                                              }
 146   2                                      
 147   2                              }
 148   1              }
 149          
 150          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    401    ----
   CONSTANT SIZE    =     11    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      5       2
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


C51 COMPILATION COMPLETE.  0 WARNING(S),  0 ERROR(S)