C51 COMPILER V7.50   KEY                                                                   03/24/2008 11:06:15 PAGE 1   


C51 COMPILER V7.50, COMPILATION OF MODULE KEY
OBJECT MODULE PLACED IN key.OBJ
COMPILER INVOKED BY: d:\Keil\C51\BIN\C51.EXE key.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include "key.h"
   2          #include "config.h"
   3          
   4          volatile uint8 KeyCurrent,KeyOld,KeyNoChangedTime;
   5          volatile uint8 KeyPress,KeyDown,KeyUp,KeyLast;
   6          volatile uint8 KeyChangeable;
   7          
   8          void Timer0Init(void)
   9          {
  10   1              EA = 0;
  11   1              TMOD &= 0xf0;
  12   1              TMOD |= 0x01;
  13   1              TH0 = 0xdc;     //定時中斷約5ms
  14   1              ET0 = 1;        //TIMER0中斷允許
  15   1              TR0 = 1;        //開始計數
  16   1              EA = 1;
  17   1      }
  18          
  19          void KeyInit(void)
  20          {
  21   1              KeyIO = 0xff;
  22   1              KeyCurrent = 0;
  23   1              KeyOld = 0;
  24   1              KeyNoChangedTime = 0;
  25   1              KeyPress = 0;
  26   1              KeyDown = 0;
  27   1              KeyUp = 0;
  28   1              KeyLast = 0;
  29   1              KeyChangeable = 1;
  30   1              Timer0Init();
  31   1      }
  32          
  33          void Timer0ISP(void) interrupt 1
  34          {
  35   1              TH0 = 0xdc;     //timer0 溢出中斷約5ms
  36   1              if(0 == KeyChangeable)
  37   1                      return;
  38   1              KeyCurrent = ~(KeyIO);
  39   1              if(KeyCurrent != KeyOld)
  40   1              {
  41   2                      KeyNoChangedTime = 0;
  42   2                      KeyOld = KeyCurrent;
  43   2                      return;
  44   2              }
  45   1              else
  46   1              {
  47   2                      KeyNoChangedTime++;
  48   2                      if(KeyNoChangedTime >= 1)
  49   2                      {
  50   3                              KeyNoChangedTime=1;
  51   3                              KeyPress = KeyOld;
  52   3                              KeyDown |= (~KeyLast) & KeyPress;
  53   3                              KeyUp |= KeyLast & (~KeyPress);
  54   3                              KeyLast = KeyPress;
  55   3                      }
C51 COMPILER V7.50   KEY                                                                   03/24/2008 11:06:15 PAGE 2   

  56   2              }
  57   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    109    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      8    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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