getcommand.lst

51单片机开发与应用技术详解(珍藏版)PPT及源码

C51 COMPILER V8.08   GETCOMMAND                                                            04/25/2008 15:44:36 PAGE 1   


C51 COMPILER V8.08, COMPILATION OF MODULE GETCOMMAND
OBJECT MODULE PLACED IN GETCOMMAND.OBJ
COMPILER INVOKED BY: C:\Program Files\keil\C51\BIN\C51.EXE GETCOMMAND.C BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include <stdio.h>                                                      //头文件
   2          
   3          #define CNTLQ      0x11                                 //定义控制字符
   4          #define CNTLS      0x13
   5          #define DEL        0x7F
   6          #define BACKSPACE  0x08
   7          #define CR         0x0D
   8          #define LF         0x0A
   9          
  10          void getline (char idata *line, unsigned char n)        //命令编辑函数
  11          {
  12   1        unsigned char cnt = 0;
  13   1        char c;
  14   1      
  15   1        do                                                                    //循环读取输入的命令
  16   1      {
  17   2      if ((c = _getkey ()) == CR)                             //读入字符
  18   2      c = LF;                 
  19   2      if (c == BACKSPACE  ||  c == DEL)               //处理BACKSPACE键
  20   2      {    
  21   3            if (cnt != 0)  
  22   3      {            
  23   4              cnt--;                                  //减1
  24   4              line--;
  25   4              putchar (0x08);                         //回显backspace字符
  26   4              putchar (' ');
  27   4              putchar (0x08);
  28   4            }
  29   3          }
  30   2      else if (c != CNTLQ && c != CNTLS)              //忽略CNTL_Q字符和NTL_S字符
  31   2      {   
  32   3            putchar (*line = c);                              //回显字符并保存
  33   3            line++;                                   //加1
  34   3            cnt++; 
  35   3          }
  36   2        } while (cnt < n - 1  &&  c != LF);                           //检查
  37   1      
  38   1        *line = 0;                                            //字符串结尾标志
  39   1      }
  40          
  41          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    101    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----       4
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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