adc_0804.lst

自己写的几个ADC抓换与DAC转换程序

C51 COMPILER V6.23a  ADC_0804                                                              12/14/2008 00:08:28 PAGE 1   


C51 COMPILER V6.23a, COMPILATION OF MODULE ADC_0804
OBJECT MODULE PLACED IN adc_0804.OBJ
COMPILER INVOKED BY: E:\Keil\C51\BIN\C51.EXE adc_0804.c BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          #include <reg52.h>
   2          #include <absacc.h>
   3          
   4          #define adc                     XBYTE[0xb000]
   5          #define led_wei         XBYTE[0x8000]
   6          #define led_duan        XBYTE[0x9000]
   7          
   8          unsigned char idata adc_val[31];
   9          unsigned char code      ledseg[]={
  10           0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,  //0-7
  11           0x80,0x90,0x88,0x83,0xC6,0xA1,0x86,0x8E,  //8-15
  12           0xFF          };
  13          unsigned char code ledsel[]={0x01,0x02,0x04,0x08};
  14          unsigned char  adc_dat[4];
  15          
  16          void    delayms(unsigned int t)
  17          {
  18   1              unsigned char i;
  19   1              while(--t)
  20   1                      for(i=0;i<125;i++)
  21   1                      { ; }
  22   1      }
  23          
  24          void adc_start(void)
  25          {
  26   1              adc=0xff;
  27   1      }
  28          
  29          unsigned char adc_change(void)
  30          {
  31   1              unsigned char V;
  32   1              adc_start();
  33   1              while(INT0==1);
  34   1              V=adc;
  35   1              return(V);
  36   1      }
  37          
  38          void adc_bcd(void)
  39          {
  40   1               float  x;
  41   1               unsigned char i, aver;
  42   1               unsigned int sum=0;
  43   1               for(i=0;i<31;i++)
  44   1                      adc_val[i]=adc_change();
  45   1               for(i=0;i<31;i++)
  46   1                      sum+=adc_val[i];
  47   1               aver=sum/30;
  48   1               //x=adc_change()*1000./51.;
  49   1               x=aver/51.0;
  50   1               x=x*1000.0;
  51   1               adc_dat[0]=(int)x/1000;
  52   1               adc_dat[1]=(int)x/100%10;
  53   1               adc_dat[2]=(int)x/10%10;
  54   1               adc_dat[3]=(int)x%10;
  55   1      }
C51 COMPILER V6.23a  ADC_0804                                                              12/14/2008 00:08:28 PAGE 2   

  56          
  57          void    Display(void)
  58          {
  59   1              unsigned char i;
  60   1              adc_bcd();
  61   1              for(i=0;i<4;i++)
  62   1              {
  63   2                      if(i==0)
  64   2                              led_duan=ledseg[adc_dat[i]]&0x7f;
  65   2                      else
  66   2                              led_duan=ledseg[adc_dat[i]];
  67   2                              led_wei =ledsel[i];
  68   2                              delayms(5);
  69   2                              led_wei&=0xf0;
  70   2              }
  71   1      }
  72          
  73          void    main(void)
  74          {
  75   1              while(1)
  76   1              {
  77   2                      Display();      
  78   2              }
  79   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    271    ----
   CONSTANT SIZE    =     21    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      4       4
   IDATA SIZE       =     31    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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