text1.lst

单片机快速入门原程序

C51 COMPILER V7.50   TEXT1                                                                 05/28/2006 21:32:54 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 DAC0832Addr 0x7FFFF //0832地址
   4          #define uchar unsigned char     //uchar代表单个字节无符号数
   5          #define uint unsigned int       //uint无符号字
   6          Uart_Init();                            //输出口初始化
   7          sbit P26=0xA6;                          //P2.6位
   8          sbit P27=0xA7;                          //P2.7位        
   9          void TransformData(uchar c0832data);//转换数据
  10          void Delay() ;                           //延时子程序
  11          main()
  12          {       bit upFlag=1;
  13   1              xdata cDigital=1;       //待转换的数字量
  14   1              Uart_Init();    //
  15   1              P0=0XFF;                //端口初始化为0xFF
  16   1              P1=0XFF;                //
  17   1              P2=0XFF;
  18   1              P3=0XFF;
  19   1              Delay();                //调用延时程序
  20   1              while(1)
  21   1              {
  22   2              TransformData(cDigital);//进行数模转换
  23   2                      if((cDigital==255)|(cDigital==0))
  24   2                                      upFlag=~upFlag;         //标志位取反
  25   2              if(upFlag==1)
  26   2                      {cDigital++;                            //数字量加1
  27   3                      }
  28   2              else
  29   2                      {cDigital--;                            //数字量减1
  30   3                      }
  31   2              Delay();                        //调用延时程序
  32   2              printf("digital is %d \n",cDigital);
  33   2              }
  34   1      }
  35          void TransformData(uchar c0832data)
  36          {
  37   1              *((uchar xdata *)DAC0832Addr)=c0832data;
  38   1              //向DAC0832输出待转换数字量c0832data
  39   1      }
  40          Uart_Init()
  41                  {SCON = 0x52;    /* 设置串行口控制寄存器SCON*/
  42   1               TMOD = 0x21;    /* 12M时钟时波特率为2400  */
  43   1               TCON = 0x69;    /* TCON */
  44   1               TH1 =  0xf3;    /* TH1 */
  45   1              }
  46          void Delay()    //延时程序
  47          {
  48   1              uint i;
  49   1              for(i=0;i<200;i++);
  50   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    162    ----
   CONSTANT SIZE    =     16    ----
C51 COMPILER V7.50   TEXT1                                                                 05/28/2006 21:32:54 PAGE 2   

   XDATA SIZE       =   ----       2
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----       1
END OF MODULE INFORMATION.


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