m_18b20.lst

郑州远博公司生产的单片机B型实验板电路原理图及配套源程序代码

C51 COMPILER V7.20   M_18B20                                                               04/01/2005 12:41:13 PAGE 1   


C51 COMPILER V7.20, COMPILATION OF MODULE M_18B20
OBJECT MODULE PLACED IN m_18b20.OBJ
COMPILER INVOKED BY: C:\KEIL\C51\BIN\C51.EXE m_18b20.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          /**************************************************************************
   2          YB-51-B  DS18B20数字温度模块演示程序
   3          来源： 郑州远博科技   王兴民
   4          0371-66949037  0371-67256036 13949105551
   5          ***************************************************************************/
   6          
   7          #include <config.h>
   8          
   9          void d_convert(Uchar  dd);
  10          data Uchar displaybuff[]={0x0a,0x0a,0x0a,0x0a,0x0a,0x0a}; 
  11          data Uchar hdata=0xfe;                                      
  12          data Uchar ldata=0x05;
  13          
  14          Uchar databuff[9];
  15          
  16          void main(void)           {  
  17   1      Uchar j;
  18   1      Delayms(500);   
  19   1      Init_18b20();
  20   1      Skip();
  21   1      Write_18b20(0x4e);    //写缓存命令
  22   1      Write_18b20(hdata);
  23   1      Write_18b20(ldata);
  24   1      Write_18b20(0x7f);    //12位分辨率
  25   1      Init_18b20();
  26   1      Skip();
  27   1      Write_18b20(0x48);
  28   1      Init_18b20();
  29   1      Skip();
  30   1      while(1)   {
  31   2      Init_18b20();
  32   2      Skip();
  33   2      Convert();
  34   2      Display(displaybuff);   //调用显示程序实现延时功能，以完成温度转换，并且使显示不出现闪烁
  35   2      Display(displaybuff);
  36   2      Display(displaybuff);
  37   2      Display(displaybuff); 
  38   2      Display(displaybuff);  
  39   2      Init_18b20();
  40   2      Skip();
  41   2      Read_scrat();       //读18b20 scratchpad   
  42   2      for(j=0;j<9;j++)
  43   2       {
  44   3        databuff[j]=Read_18b20();
  45   3        Display(displaybuff);
  46   3       }
  47   2      databuff[0]=databuff[0]>>4;
  48   2      databuff[1]=databuff[1]<<4;
  49   2      databuff[0]=(databuff[0]|databuff[1])&0x7f;
  50   2      d_convert(databuff[0]);
  51   2      
  52   2                   }
  53   1                                                               }
  54            
  55          /*************************************************************************************************
C51 COMPILER V7.20   M_18B20                                                               04/01/2005 12:41:13 PAGE 2   

  56          10进制数据送入缓冲区
  57          **************************************************************************************************/
  58          void d_convert(Uchar  dd) {
  59   1      Uchar bw,sw,gw;
  60   1      bw=dd/100;
  61   1      sw=(dd%100)/10;
  62   1      gw=dd%10;
  63   1      displaybuff[0]=gw;
  64   1      displaybuff[1]=sw;
  65   1      displaybuff[2]=bw;         }
  66                      


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    201    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =     17       1
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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