text1.lst

单片机快速入门原程序

C51 COMPILER V7.50   TEXT1                                                                 05/29/2006 12:18:40 PAGE 1   


C51 COMPILER V7.50, COMPILATION OF MODULE TEXT1
OBJECT MODULE PLACED IN Text1.OBJ
COMPILER INVOKED BY: e:\Keil\C51\BIN\C51.EXE Text1.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include <reg51.h>
   2          #include<stdio.h>
   3          #define ADC0809CH0 0xDFEF8 //0809通道0地址
   4          #define ADC0809CH1 0xDFEF9 //0809通道1地址
   5          #define ADC0809CH2 0xDFEFA //0809通道2地址
   6          #define ADC0809CH3 0xDFEFB //0809通道3地址
   7          #define uchar unsigned char     //uchar代表单个字节无符号数
   8          #define uint unsigned int       //uint无符号字
   9          xdata uint cChannelIndex;
  10          xdata uchar cDigitalData[4]=0;
  11          xdata uint nCurrentAddr;
  12          bit BusyFlag=0;         //忙标志位 1为忙状态
  13          Uart_Init();                    //输出口初始化
  14          void SelectChannel(uint c0809addr,uchar c0809data);
  15          uchar GetResult( );//得到转换结果
  16          void Delay();           //延时程序
  17          main()
  18          {       Uart_Init();    //
  19   1              P0=0XFF;                //端口初始化为0xFF
  20   1              P1=0XFF;                
  21   1              P2=0XFF;
  22   1              P3=0XFF;
  23   1              EX0=1;                  //开外部中断0
  24   1              EA=1;                   //全局中断打开
  25   1              cChannelIndex=0;
  26   1              nCurrentAddr=ADC0809CH0;
  27   1              BusyFlag=1;                     //置忙标志
  28   1              SelectChannel(ADC0809CH0,cChannelIndex);        //选择ADC0809通道0
  29   1              while(BusyFlag);        //等待转换完成
  30   1              cChannelIndex++;
  31   1              nCurrentAddr=ADC0809CH1;
  32   1              BusyFlag=1;             //置忙标志
  33   1              SelectChannel(ADC0809CH1,cChannelIndex);        //选择ADC0809通道1
  34   1              while(BusyFlag);        //等待转换完成
  35   1              cChannelIndex++;
  36   1              nCurrentAddr=ADC0809CH2;
  37   1              BusyFlag=1;             //置忙标志
  38   1              SelectChannel(ADC0809CH2,cChannelIndex);        //选择ADC0809通道2
  39   1              while(BusyFlag);        //等待转换完成
  40   1              cChannelIndex++;
  41   1              nCurrentAddr=ADC0809CH3;
  42   1              BusyFlag=1;             //置忙标志
  43   1              SelectChannel(ADC0809CH3,cChannelIndex);        //选择ADC0809通道3
  44   1              while(BusyFlag);        //等待转换完成
  45   1              while(1);
  46   1      }
  47          Uart_Init()
  48                  {SCON = 0x52;    /* 设置串行口控制寄存器SCON*/
  49   1               TMOD = 0x21;    /* 12M时钟时波特率为2400  */
  50   1               TCON = 0x69;    /* TCON */
  51   1               TH1 =  0xf3;    /* TH1 */
  52   1              }
  53          void SelectChannel(uint c0809addr,uchar c0809data)
  54                  {
  55   1                      *((uchar xdata *)c0809addr)=c0809data;
C51 COMPILER V7.50   TEXT1                                                                 05/29/2006 12:18:40 PAGE 2   

  56   1                      //选择ADC0809通道
  57   1              }
  58          uchar GetResult( )//得到转换结果
  59                  {uchar cResult;
  60   1              cResult=*((uchar xdata *)nCurrentAddr);
  61   1              return cResult;         //返回转换后数字量
  62   1              }
  63          void Delay()    //延时程序
  64                  {       uint i;
  65   1                      for(i=0;i<200;i++);
  66   1              }
  67          void int0() interrupt 0 using 0
  68          {       cDigitalData[cChannelIndex]=GetResult();
  69   1              BusyFlag=0;     //忙标志清0
  70   1              //printf("Got channel %d Result\n",cChannelIndex);
  71   1                      /*响应INT0后输出*/
  72   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    264    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =      8    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =      1    ----
END OF MODULE INFORMATION.


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