7705.lst

单片机实现AD7705采集

C51 COMPILER V7.08   7705                                                                  10/14/2007 17:29:32 PAGE 1   


C51 COMPILER V7.08, COMPILATION OF MODULE 7705
OBJECT MODULE PLACED IN 7705.OBJ
COMPILER INVOKED BY: E:\软件安装\kc\C51\BIN\C51.EXE 7705.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1           /*我的设计中ad7705的晶振是用的2.4576,电路中有接口和开发机进行单片机信号联接，并将转换结果显示在开发机的四
             -个数码管上。这个程序是采样程序,P3口设置成串口0方式*/
   2          
   3          #include<reg51.h>
   4          #include<absacc.h>
   5          #include<intrins.h>
   6          #include<math.h>
   7          sbit ADC_DIN=P3^0; //这一段是指定ad7705的信号引脚
   8          sbit ADC_CLK=P3^1; //指定时钟引脚
   9          sbit ADC_DRDY=P3^2; //指定转换标志位
  10          
  11          float voltage; //这个全局变量是用来给数显子程序传递采样到的数据的
  12          
  13          unsigned char data display_buffer[5]; //显示缓冲
  14          /*****************************************/
  15          void send(unsigned char a) //通过P1口给数显发送8位数据
  16          {
  17   1      unsigned char i;
  18   1      for(i=0;i<8;i++)
  19   1      {
  20   2      if(_crol_(a,i)&0x80)
  21   2      D_DAT=1;
*** ERROR C202 IN LINE 21 OF 7705.C: 'D_DAT': undefined identifier
  22   2      else
  23   2      D_DAT=0;
*** ERROR C202 IN LINE 23 OF 7705.C: 'D_DAT': undefined identifier
  24   2      D_CLK=0;
*** ERROR C202 IN LINE 24 OF 7705.C: 'D_CLK': undefined identifier
  25   2      D_CLK=1;
*** ERROR C202 IN LINE 25 OF 7705.C: 'D_CLK': undefined identifier
  26   2      }
  27   1      }
  28          /*****************************************/
  29          void DISP_DLEAY(void) //显示延迟子程序
  30          {
  31   1      unsigned char i,j;
  32   1      for(i=0;i<10;i++)
  33   1      for(j=0;j<5;j++);
  34   1      }
  35          /****************************************************************/
  36          void process(long x)
  37          {
  38   1        as_0[5]=x/100000;
*** ERROR C202 IN LINE 38 OF 7705.C: 'as_0': undefined identifier
  39   1        x=x%100000;
  40   1        as_0[4]=x/10000;
*** ERROR C202 IN LINE 40 OF 7705.C: 'as_0': undefined identifier
  41   1        x=x%10000;
  42   1        as_0[3]=x/1000;
*** ERROR C202 IN LINE 42 OF 7705.C: 'as_0': undefined identifier
  43   1        x=x%1000;
  44   1        as_0[2]=x/100;
*** ERROR C202 IN LINE 44 OF 7705.C: 'as_0': undefined identifier
  45   1        x=x%100;
  46   1        as_0[1]=x/10;
C51 COMPILER V7.08   7705                                                                  10/14/2007 17:29:32 PAGE 2   

*** ERROR C202 IN LINE 46 OF 7705.C: 'as_0': undefined identifier
  47   1        as_0[0]=x%10;
*** ERROR C202 IN LINE 47 OF 7705.C: 'as_0': undefined identifier
  48   1      }
  49          void a3310dis()
  50          {
  51   1           display1(22,0,number[as_0[5]]);
  52   1           display1(30,0,number[as_0[4]]);
  53   1           display1(38,0,number[as_0[3]]);
  54   1           display1(46,0,number[as_0[2]]);
  55   1           display1(54,0,number[as_0[1]]);
  56   1               display1(62,0,number[as_0[0]]);
  57   1      }
  58          unsigned char rearrange(unsigned char a) /*将8位数据a的顺序颠倒后赋给b。
  59          因为串口发送顺序和ad7705的接收顺序刚好相反*/
  60          {
  61   1      unsigned char i,b;
  62   1      b=a&0x01;
  63   1      for(i=1; i<8; i++)
  64   1      {
  65   2      b=b<<1;
  66   2      a=a>>1;
  67   2      b=b+(a&0x01);
  68   2      }
  69   1      return(b);
  70   1      }
  71          
  72          /****************************************************************/
  73          
  74          void WriteToReg_ADC(unsigned char a) //通过串口给ad7705发送命令字a
  75          {
  76   1      
  77   1      SCON=0;
  78   1      
  79   1      TI=0;
  80   1      SBUF=a;
  81   1      while(!TI);
  82   1      
  83   1      }
  84          
  85          /*************************************************************/
  86          
  87          void MX7705_Init() //ad7705初始化
  88          {
  89   1      unsigned char i; 
  90   1      
  91   1      ADC_CLK=1; //防止接口迷失
  92   1      ADC_DIN=1;
  93   1      for(i=0;i<100;i++)//prevent interface from losting
  94   1      {
  95   2      ADC_CLK=0;
  96   2      ADC_CLK=1;
  97   2      } 
  98   1      
  99   1      WriteToReg_ADC(0x04); //write 0x20 to communication register to choose channel 0 
 100   1      //and clock register for the next one to write
 101   1      
 102   1      WriteToReg_ADC(0x20); //写0x04到时钟寄存器，指定晶振频率为2.4576MHz,采样率为50Hz.
 103   1      WriteToReg_ADC(0x08); //write 0x10 to communication register to choose channel 0
 104   1      //and setup register for the next one to write
 105   1      
 106   1      WriteToReg_ADC(0x22); //写0x44到设置寄存器，指定增益为1, buffer off, FSYNC=0, and self-calibration 
C51 COMPILER V7.08   7705                                                                  10/14/2007 17:29:32 PAGE 3   

 107   1      
 108   1      }
 109          
 110          /*************************************************************/
 111          
 112          unsigned int ReadWord()
 113          {
 114   1      unsigned char high8,low8;
 115   1      unsigned int out;
 116   1      
 117   1      SCON=0;
 118   1      
 119   1      REN=1; //allow serial port to recieve data
 120   1      RI=0;
 121   1      while(!RI); //waiting the end of recieve of 8 bit
 122   1      high8=SBUF;
 123   1      
 124   1      ADC_CLK=1;
 125   1      
 126   1      RI=0;
 127   1      while(!RI);
 128   1      low8=SBUF;
 129   1      REN=0; 
 130   1      out=rearrange(high8);
 131   1      out=out<<8;
 132   1      out=out+rearrange(low8);
 133   1      return(out);
 134   1      
 135   1      }
 136          main()
 137          {
 138   1      unsigned int data_out;
 139   1      
 140   1      
 141   1      MX7705_Init();
 142   1      
 143   1      while(ADC_DRDY==0)
 144   1      {
 145   2      
 146   2      WriteToReg_ADC(0x1C); //给通讯寄存器发0x38，指定下一个读数据寄存器
 147   2      data_out=ReadWord(); //从数据寄存器中读16位数据
 148   2      voltage=5.0*(data_out/65536.0); //将所读数据转换为电压值
 149   2      display(); 
 150   2      
 151   2      }
 152   1      
 153   1      }
 154           

C51 COMPILATION COMPLETE.  0 WARNING(S),  10 ERROR(S)