key_scan.lst

按键和lcd1602的C51程序

C51 COMPILER V7.06   KEY_SCAN                                                              04/18/2009 11:51:07 PAGE 1   


C51 COMPILER V7.06, COMPILATION OF MODULE KEY_SCAN
OBJECT MODULE PLACED IN key_scan.OBJ
COMPILER INVOKED BY: D:\Program Files\Keil\C51\BIN\C51.EXE key_scan.c BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          #include "reg51.h"
   2          #include "intrins.h"
   3          #include "lcd1602.h"
   4          #define uchar unsigned char
   5          
   6          sbit led1 = P1^0;
   7          sbit led2 = P1^1;
   8          sbit led3 = P1^2;
   9          sbit led4 = P1^3;
  10          sbit led5 = P1^4;
  11          void mDelay(unsigned int DelayTime)
  12          {
  13   1              unsigned int j=0;
  14   1              for(;DelayTime>0;DelayTime--)
  15   1              { 
  16   2                      for(j=0;j<125;j++)
  17   2                      {;} 
  18   2              }
  19   1      }
  20          uchar Key()
  21          { 
  22   1              uchar KeyV;
  23   1              uchar tmp;
  24   1              P0=P0|0x1f; //四个按键所接位置
  25   1              KeyV=P0;
  26   1              if((KeyV|0xe0)==0xff) //无键按下
  27   1                      return(0);
  28   1              mDelay(10); //延时，去键抖
  29   1              KeyV=P0;
  30   1              if((KeyV|0xe0)==0xff)
  31   1                      return(0);
  32   1              else
  33   1              { 
  34   2                      for(;;)
  35   2                      { 
  36   3                              tmp=P0;
  37   3                              if((tmp|0xe0)==0xff)  //等待按键释放
  38   3                                      break;
  39   3                      }
  40   2                      return(KeyV);
  41   2              }
  42   1      }
  43          
  44          void main()
  45          {
  46   1              uchar KValue;
  47   1              //uchar disp;
  48   1              delay(10);
  49   1              P1=0xff;
  50   1         // lcd_init();  //初始化LCD
  51   1              while(1)
  52   1              { 
  53   2                      KValue=Key();
  54   2                      switch (KValue)
  55   2                      { 
C51 COMPILER V7.06   KEY_SCAN                                                              04/18/2009 11:51:07 PAGE 2   

  56   3                              case 0xfe: //P3.2=0,Start
  57   3                              { //disp = 'A';
  58   4                                      led1=!led1;
  59   4                                      break; }
  60   3                              case 0xfd: //P3.3=0,Stop
  61   3                              { //disp = 'B';
  62   4                                              led2=!led2;
  63   4                                      break; }
  64   3                              case 0xfb: //P3.4=0 Up
  65   3                              {       led3=!led3;
  66   4                                       //disp = 'C';
  67   4                                      break; }
  68   3                              case 0xf7: //P3.5=0 Down
  69   3                              { //disp = 'D';
  70   4                                      led4=!led4;
  71   4                                      break; }
  72   3                              case 0xef: //P3.5=0 Down
  73   3                              { //disp = 'Q';
  74   4                                              led5=!led5;
  75   4                                      break; }
  76   3                      }
  77   2                      //lcd_pos(0x00);     //设置显示位置为第一行第1列
  78   2                      //lcd_wdat(disp);
  79   2              }
  80   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    128    ----
   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)