matrix_key.lst

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C51 COMPILER V7.09   MATRIX_KEY                                                            08/24/2007 09:30:03 PAGE 1   


C51 COMPILER V7.09, COMPILATION OF MODULE MATRIX_KEY
OBJECT MODULE PLACED IN matrix_key.OBJ
COMPILER INVOKED BY: d:\Keil\C51\BIN\C51.EXE matrix_key.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include "reg51.h"
   2          
   3          void Delay(unsigned int i)
   4          {
   5   1              unsigned int j;
   6   1              for(;i>0;i--)
   7   1                      for(j=0;j<100;j++);
   8   1              }
   9          
  10          void IO_Init()
  11          {
  12   1              P1 = 0xff;
  13   1              P2 = 0xff;
  14   1              }
  15                  
  16          void main()
  17          {
  18   1              unsigned char temp,key;
  19   1              IO_Init();
  20   1              while(1)
  21   1              {
  22   2                      P1 = 0xf0;
  23   2                      temp = P2 & 0x0f;
  24   2                      if(temp != 0x0f)
  25   2                      {
  26   3                              P1 = 0xfe;
  27   3                              Delay(1);
  28   3                              key = P2 & 0x0f;
  29   3                              P1 = 0xfd;
  30   3                              Delay(1);
  31   3                              key &= (P2 & 0x0f);
  32   3                              P1 = 0xfb;
  33   3                              Delay(1);
  34   3                              key &= (P2 & 0x0f);
  35   3                              P1 = 0xf7;
  36   3                              Delay(1);
  37   3                              key &= (P2 & 0x0f);                       
  38   3                              }
  39   2                      }
  40   1              }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    106    ----
   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)