key-beep.lst

单片机C语言程序设计实训100例

C51 COMPILER V8.08   KEY_BEEP                                                              08/10/2009 10:36:35 PAGE 1   


C51 COMPILER V8.08, COMPILATION OF MODULE KEY_BEEP
OBJECT MODULE PLACED IN key-beep.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE key-beep.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include <reg52.h>
   2          #define uchar unsigned char
   3          #define uint unsigned int
   4          
   5          sbit BEEP = P3^7;
   6          sbit K1   = P1^4;
   7          sbit K2   = P1^5;
   8          sbit K3   = P1^6;
   9          sbit K4   = P1^7;
  10          
  11          void DelayMS(uint x)
  12          {
  13   1              uchar t;
  14   1              while(x--)
  15   1              {
  16   2                      for(t=0;t<120;t++);
  17   2              }
  18   1      }
  19          
  20          void Play(uchar t)
  21          {
  22   1              uchar i;
  23   1              for(i=0;i<100;i++)
  24   1              {
  25   2                      BEEP = ~BEEP;
  26   2                      DelayMS(t);
  27   2              }
  28   1              BEEP = 0;
  29   1      }
  30          
  31          void main()
  32          {
  33   1              P1 = 0xff;
  34   1              while(1)
  35   1              {
  36   2                      if(K1==0) Play(1);
  37   2                      if(K2==0) Play(2);
  38   2                      if(K3==0) Play(3);
  39   2                      if(K4==0) Play(4);
  40   2              }
  41   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     79    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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