adc.lst

利用NTC电阻实现温度测试,带详细文档和C语言代码,测试温度误差在0.5度.

C51 COMPILER V7.02a   ADC                                                                  07/05/2006 21:31:45 PAGE 1   


C51 COMPILER V7.02a, COMPILATION OF MODULE ADC
OBJECT MODULE PLACED IN adc.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE adc.c BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          
   2          #include "24e1.h"
   3          #include "adc.h"
   4          
   5          
   6            
   7           void InitADC(void)
   8          {
   9   1          //ADCCON = 0x20;                  // Channel 0, NPD=1, ADCRUN=0, EXTREF=0
  10   1              //ADCCON = 0x28;                                          // ADCSEL=8, NPD=1, ADCRUN=0, EXTREF=0
  11   1          ADCCON  = 0x30;                               // Channel 0, NPD=1, ADCRUN=0, EXTREF=1
  12   1              ADCSTATIC &= 0x1c;                              //       
  13   1          ADCSTATIC |= 0x03;              // 12bit
  14   1              //ADCSTATIC |= 0x01;              // 8bit
  15   1          ADCCON &= ~0x80;                // Start..
  16   1          ADCCON |= 0x80;                 // ..new conversion
  17   1      } 
  18            
  19          unsigned int ReadADC1(void)
  20          {
  21   1          unsigned int b;
  22   1              //watchdog
  23   1                      REGX_MSB = 0xFF;
  24   1                      REGX_LSB = 0xFF;
  25   1          while((EXIF & 0x10) == 0)       // Wait until ADC conversion complete
  26   1              ;
  27   1          EXIF &= ~0x10;                  // Clear ADC completion bit
  28   1          b = ADCDATAH;                   // Read ADC data
  29   1          ADCCON &= ~0x80;                // Start..
  30   1          ADCCON |= 0x80;                 // ..new conversion
  31   1          return b;
  32   1      }
  33          
  34          unsigned int ReadADC(void)
  35          {
  36   1              unsigned int adc[7],adc_rev;
  37   1              unsigned int sum;
  38   1              unsigned int max,min,temp,i;
  39   1              //watchdog
  40   1                      REGX_MSB = 0xFF;
  41   1                      REGX_LSB = 0xFF;
  42   1              for(i=0;i<7;i++)
  43   1              {
  44   2                      adc[i]=ReadADC1();
  45   2                      Delay100us(10);
  46   2              }
  47   1              max=adc[0];
  48   1              min=adc[6];
  49   1              if(max<min)
  50   1              {
  51   2              temp=max;
  52   2                      max=min;
  53   2                      min=temp;
  54   2              }
  55   1              for(i=1;i<6;i++)
C51 COMPILER V7.02a   ADC                                                                  07/05/2006 21:31:45 PAGE 2   

  56   1              {
  57   2                      if(adc[i]>max)
  58   2                      {
  59   3                      temp=max;
  60   3                              max=adc[i];
  61   3                              adc[i]=temp;
  62   3                      }
  63   2                      else if(adc[i]<min)
  64   2                      {
  65   3                              temp=min;
  66   3                              min=adc[i];
  67   3                              adc[i]=temp;
  68   3                      }
  69   2              }
  70   1              for(i=1,sum=0;i<6;i++)
  71   1              {
  72   2              sum+=adc[i];
  73   2              }
  74   1              adc_rev=sum/5;
  75   1              return adc_rev;
  76   1      }
  77          
  78          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    266    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----      18
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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