key.lst

电子称重的程序

C51 COMPILER V8.02   KEY                                                                   05/04/2008 21:35:46 PAGE 1   


C51 COMPILER V8.02, COMPILATION OF MODULE KEY
OBJECT MODULE PLACED IN KEY.OBJ
COMPILER INVOKED BY: e:\Keil\C51\BIN\C51.EXE KEY.C BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include<head.h>
   2          #include "key.h"
   3          BOOL keydd_Flag;
   4          Uchar key_old;
   5          
   6          /*******************************************************
   7          *             按键驱动程序
   8          **********************************************************/
   9          /*******************************************************
  10          *       函数原型:void key_init(void)
  11          *       用途:按键复位
  12          **********************************************************/
  13          void key_init(void)
  14          {
  15   1        TMOD&=0xf0;
  16   1        TMOD|=0X01;
  17   1        TL0=(0x10000-(SYSCLK/1200))&0x00ff;
  18   1        TH0=(0x10000-(SYSCLK/1200))>>8;
  19   1        TR0=1;
  20   1        ET0=1;
  21   1        EA=1;
  22   1        key_old=0;
  23   1      }
  24          
  25          /*******************************************************
  26          *       函数原型:T0_int()(void)
  27          *       用途:t0中断,获得按键值
  28          *       出口:无
  29          **********************************************************/
  30          void T0_int(void) interrupt 1
  31          {
  32   1       Uchar key_temp=0;
  33   1       Uchar key_check=0;
  34   1       Uchar i=0;
  35   1       TL0=(0x10000-(SYSCLK/1200))&0x00ff;
  36   1       TH0=(0x10000-(SYSCLK/1200))>>8;
  37   1      
  38   1       KC=0x0f;
  39   1       key_temp=(~KC)&0x0f;
  40   1       if(key_temp!=key_old)
  41   1       {
  42   2        if(keydd_Flag)
  43   2        {
  44   3          key_check=1;
  45   3          while(key_check!=0x10)
  46   3          {
  47   4            if(key_temp&key_check)
  48   4            {
  49   5             if(!(key_old&key_check))
  50   5             {
  51   6              if((key_temp&CTRL)&&(key_check!=CTRL))i|=CTRLF;
  52   6              if((key_temp&SHIFT)&&(key_check!=SHIFT))i|=SHIFTF;
  53   6              PostMessage(M_KEYDOWN,key_check|i);
  54   6             }
  55   5            }
C51 COMPILER V8.02   KEY                                                                   05/04/2008 21:35:46 PAGE 2   

  56   4            else  if(key_old&key_check)
  57   4            {
  58   5             if(key_temp&CTRL)i|=CTRLF;
  59   5             if(key_temp&SHIFT)i|=SHIFTF;
  60   5             PostMessage(M_KEYUP,key_check|i);
  61   5            }
  62   4             key_check<<=1;
  63   4          }
  64   3          key_old=key_temp;
  65   3          keydd_Flag=FALSE;
  66   3        }
  67   2        else
  68   2        {
  69   3         keydd_Flag=TRUE;
  70   3        }
  71   2       }
  72   1       else
  73   1       {
  74   2         keydd_Flag=FALSE;
  75   2       }
  76   1      }
  77          
  78          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    220    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      1       3
   IDATA SIZE       =   ----    ----
   BIT SIZE         =      1    ----
END OF MODULE INFORMATION.


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