test.lst

AT89C51+MAX7221实现4*4键盘扫描

C51 COMPILER V7.06   TEST                                                                  10/05/2007 10:20:51 PAGE 1   


C51 COMPILER V7.06, COMPILATION OF MODULE TEST
OBJECT MODULE PLACED IN test.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE test.c BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          #include "Max7221.h"
   2          
   3          
   4          void main(void)
   5          {
   6   1              unsigned char DisplayBuffer[8];
   7   1              int i;
   8   1              unsigned char KeyID;
   9   1              InitialMax7221();
  10   1      while(1)
  11   1      {
  12   2              P2= 0xF0;
  13   2              while(1)
  14   2              {
  15   3                      if(P2 != 0xF0)
  16   3                      {
  17   4                              KeyID = 0x0F & P2;
  18   4                              break;
  19   4                      }
  20   3              }
  21   2              
  22   2              P2 = 0x0F;
  23   2              KeyID = KeyID + 0xF0 & P2;
  24   2      
  25   2              for(i=0; i <8; i++)
  26   2              {
  27   3                      DisplayBuffer[7-i]= KeyID % 16;
  28   3                      KeyID = KeyID / 16;
  29   3              }
  30   2              Max7221Display(DisplayBuffer);
  31   2      
  32   2      }
  33   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    232    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----      12
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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