sys12m.lst

51单片机的键盘扫描程序,当有键盘输入是,将在LED上显示,且蜂鸣器将发出相应的响声.

C51 COMPILER V7.06   SYS12M                                                                07/13/2005 16:20:33 PAGE 1   


C51 COMPILER V7.06, COMPILATION OF MODULE SYS12M
OBJECT MODULE PLACED IN sys12M.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE sys12M.c WARNINGLEVEL(1) BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          //sys12M.c
   2          #include"general.h"
   3          //******************************
   4          union WORD_2BYTE {
   5                                                  WORD tw;
   6                                                  struct{BYTE HI;BYTE LO;} tc;
   7                                           };
   8          typedef union WORD_2BYTE WBT;
   9          /////////////////////////////////////                             
  10          void delay(WORD delayor)
  11          {
  12   1              WORD i;
  13   1              BYTE j;
  14   1              for(j=0;j<195;j++)
  15   1              {
  16   2               _nop_();
  17   2               _nop_();
  18   2              }
  19   1              _nop_();
  20   1              _nop_();
  21   1              _nop_();
  22   1              delayor--;
  23   1              for(i=0;i<delayor;i++)
  24   1              {
  25   2                      _nop_();
  26   2                      for(j=0;j<197;j++) 
  27   2                      {
  28   3                        _nop_();
  29   3                        _nop_();
  30   3                      }
  31   2              }
  32   1      }
  33          ///////////////////////////////////////////////
  34          void set_timer(WORD delayor,BYTE tn)
  35          {
  36   1              WBT temp;
  37   1              temp.tw = 65535 - delayor;
  38   1              switch(tn)
  39   1              {
  40   2                      case 0 :TH0 = temp.tc.HI;
  41   2                                      TL0 = temp.tc.LO;
  42   2                                      TR0 = 1;
  43   2                                      break;
  44   2                      case 1 :TH1 = temp.tc.HI;
  45   2                                      TL1 = temp.tc.LO;
  46   2                                      TR1 = 1;
  47   2                                      break;
  48   2                      case 2 :TH2 = temp.tc.HI;
  49   2                                      TL2 = temp.tc.LO;
  50   2                                      TR2 = 1;
  51   2                                      break;
  52   2                      default:break;
  53   2               }
  54   1      }
  55                  
C51 COMPILER V7.06   SYS12M                                                                07/13/2005 16:20:33 PAGE 2   



MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     92    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----       2
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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