kbd.lst

This is example of using Atmel at89c5131 MCU with at49db11(spi dataflash) and epson s1d1335 graphic

C51 COMPILER V8.00   KBD                                                                   04/09/2009 13:30:35 PAGE 1   


C51 COMPILER V8.00, COMPILATION OF MODULE KBD
OBJECT MODULE PLACED IN kbd.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE kbd.c LARGE BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include <Atmel/at89c5131.h>
   2          #include "kbd.h"
   3          #include "lcd.h"
   4          
   5          
   6          unsigned char KeyPressed;
   7          unsigned char KeyCode;
   8          //-----------------------------------------------------
   9          void EnableKbd()
  10          {
  11   1              IEN1 |= 0x01;   /* Enable keyboard interupt */
  12   1      }
  13          //-----------------------------------------------------
  14          void DisableKbd()
  15          {
  16   1              IEN1 &= 0xFE;   /* Disable keyboard interupt */
  17   1      }
  18          //-----------------------------------------------------
  19          void InitKbd()
  20          {
  21   1              KeyPressed = 0;
  22   1              KeyCode = 0;
  23   1              EA = 1;                 /* enable interrupts */
  24   1              KBE = 0x1F;             /*Enable P1 I/O as keyboard IO */
  25   1              KBF = 0x00;             /* Clear all keyboard flags */
  26   1              IEN1 |= 0x01;   /* Enable keyboard interupt */
  27   1      }
  28          //-----------------------------------------------------
  29          unsigned char GetKey()
  30          {
  31   1              while(!KeyPressed){}
  32   1              KeyPressed = 0;
  33   1              return KeyCode;
  34   1      }
  35          //-----------------------------------------------------
  36          /**
  37          * FUNCTION_PURPOSE:keyboard_interrupt. Save pressed key
  38          * FUNCTION_INPUTS:void
  39          * FUNCTION_OUTPUTS:void
  40          */
  41          void keyboard_interrupt() interrupt 7 using 1
  42          {
  43   1              //IEN1 &=0xFE;  /* Disable keyboard interupt */
  44   1              EA = 0;
  45   1              KeyCode = KBF&0x1F;     /* save pressed key */
  46   1              KeyPressed = 1;         /* set the software flag */
  47   1              KBF = 0x00;                             /* clear keyboard flags */
  48   1              //IEN1 |=0x01;  /* Enable keyboard interupt */
  49   1              EA = 1;
  50   1      }
  51          //-------------------------------------------------------------------


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     75    ----
C51 COMPILER V8.00   KBD                                                                   04/09/2009 13:30:35 PAGE 2   

   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =      2    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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