adc0832.lst

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C51 COMPILER V8.05a   ADC0832                                                              12/09/2006 18:03:03 PAGE 1   


C51 COMPILER V8.05a, COMPILATION OF MODULE ADC0832
OBJECT MODULE PLACED IN ADC0832.OBJ
COMPILER INVOKED BY: d:\Keil\C51\BIN\C51.EXE ADC0832.c ROM(COMPACT) OPTIMIZE(SIZE) DEBUG OBJECTEXTEND

line level    source

   1          /************************
   2          ADC0832实验
   3          ************************/
   4          #include <intrins.h>
   5          #include <at89x52.h>
   6          
   7          #define ulong unsigned long
   8          #define uint unsigned int
   9          #define uchar unsigned char
  10          
  11          sbit ADCS =P1^3;  //ADC0832 chip seclect
  12          sbit ADDI =P1^1;  //ADC0832 data in
  13          sbit ADDO =P1^1;  //ADC0832 data out
  14          sbit ADCLK =P1^0;  //ADC0832 clock signal
  15          
  16          unsigned int Adc0832(unsigned char channel);
  17          
  18          /************
  19          读ADC0832函数
  20          ************/
  21          
  22          //采集并返回
  23          unsigned int Adc0832(unsigned char channel)
  24          {
  25   1              uchar i=0;
  26   1              uchar j;
  27   1              uint dat=0;
  28   1              uchar ndat=0;
  29   1      
  30   1              if(channel==0)channel=2;
  31   1              if(channel==1)channel=3;
  32   1              ADDI=1;
  33   1              _nop_();
  34   1              _nop_();
  35   1              ADCS=0;//拉低CS端
  36   1              _nop_();
  37   1              _nop_();
  38   1              ADCLK=1;//拉高CLK端
  39   1              _nop_();
  40   1              _nop_();
  41   1              ADCLK=0;//拉低CLK端,形成下降沿1
  42   1              _nop_();
  43   1              _nop_();
  44   1              ADCLK=1;//拉高CLK端
  45   1              ADDI=channel&0x1;
  46   1              _nop_();
  47   1              _nop_();
  48   1              ADCLK=0;//拉低CLK端,形成下降沿2
  49   1              _nop_();
  50   1              _nop_();
  51   1              ADCLK=1;//拉高CLK端
  52   1              ADDI=(channel>>1)&0x1;
  53   1              _nop_();
  54   1              _nop_();
  55   1              ADCLK=0;//拉低CLK端,形成下降沿3
C51 COMPILER V8.05a   ADC0832                                                              12/09/2006 18:03:03 PAGE 2   

  56   1              ADDI=1;//控制命令结束 
  57   1              _nop_();
  58   1              _nop_();
  59   1              dat=0;
  60   1              for(i=0;i<8;i++)
  61   1              {
  62   2                      dat|=ADDO;//收数据
  63   2                      ADCLK=1;
  64   2                      _nop_();
  65   2                      _nop_();
  66   2                      ADCLK=0;//形成一次时钟脉冲
  67   2                      _nop_();
  68   2                      _nop_();
  69   2                      dat<<=1;
  70   2                      if(i==7)dat|=ADDO;
  71   2              }  
  72   1              for(i=0;i<8;i++)
  73   1              {
  74   2                      j=0;
  75   2                      j=j|ADDO;//收数据
  76   2                      ADCLK=1;
  77   2                      _nop_();
  78   2                      _nop_();
  79   2                      ADCLK=0;//形成一次时钟脉冲
  80   2                      _nop_();
  81   2                      _nop_();
  82   2                      j=j<<7;
  83   2                      ndat=ndat|j;
  84   2                      if(i<7)ndat>>=1;
  85   2              }
  86   1              ADCS=1;//拉低CS端
  87   1              ADCLK=0;//拉低CLK端
  88   1              ADDO=1;//拉高数据端,回到初始状态
  89   1              dat<<=8;
  90   1              dat|=ndat;
  91   1              return(dat);            //return ad data
  92   1      }
  93          
  94          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    145    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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