text1.lst

51单片机项目集

C51 COMPILER V8.02   TEXT1                                                                 07/09/2010 17:50:06 PAGE 1   


C51 COMPILER V8.02, COMPILATION OF MODULE TEXT1
OBJECT MODULE PLACED IN .\Text1.obj
COMPILER INVOKED BY: d:\Keil\C51\BIN\C51.EXE ..\..\Text1.c BROWSE DEBUG OBJECTEXTEND PRINT(.\Text1.lst) OBJECT(.\Text1.o
                    -bj)

line level    source

   1          //------------------------------------------------------------
   2          // ADC0809模数转换
   3          //ADC0809采样通道3输入的模拟量,转换后结果显示在数码管上
   4          #include <reg51.h>
   5          #define uchar unsigned char 
   6          #define uint unsigned int
   7          
   8          uchar code LEDData[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
   9          //ADC0809引脚定义
  10          sbit OE=P1^0;
  11          sbit EOC=P1^1;
  12          sbit ST=P1^2;
  13          sbit CLK=P1^3;
  14          //延时
  15          void Delayms(uint ms)
  16          {
  17   1      uchar i;
  18   1      while(ms--)for(i=0;i<120;i++);
  19   1      }
  20          //显示转换结果
  21          void Display_Result(uchar d)
  22          {
  23   1      P2=0xf7;
  24   1      P0=LEDData[d%10];
  25   1      Delayms(5);
  26   1      P2=0xfd;
  27   1      P0=LEDData[d%100/10];
  28   1      Delayms(5);
  29   1      P2=0xfd;
  30   1      P0=LEDData[d/100];
  31   1      Delayms(5);
  32   1      }
  33          // 主程序
  34           void main()
  35           {
  36   1       TMOD=0x02;
  37   1       TH0=0x14;
  38   1       TL0=0x00;
  39   1       IE=0x82;
  40   1       TR0=1;
  41   1       P1=0x3f;//选择ADC0809通道3(0111)
  42   1                 //高4位设通道地址为0111
  43   1       while(1)
  44   1       {
  45   2       ST=0;ST=1;ST=0;//启动转换
  46   2       while(EOC==0);    //等待转换结果
  47   2       OE=1;   //允许输出
  48   2       Display_Result(P3);   //显示A/D转换结果
  49   2       OE=0;  //关闭输出
  50   2       }
  51   1       }
  52           //T0定时器中断给ADC0809提供时钟信号
  53           void Timer0_INT() interrupt 1
  54           {
C51 COMPILER V8.02   TEXT1                                                                 07/09/2010 17:50:06 PAGE 2   

  55   1       CLK=!CLK; //ADC0809时钟信号
  56   1       } 


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    122    ----
   CONSTANT SIZE    =     10    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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