44key.lst

SHT10温湿度测试

C51 COMPILER V8.15   44KEY                                                                 08/06/2009 13:49:09 PAGE 1   


C51 COMPILER V8.15, COMPILATION OF MODULE 44KEY
OBJECT MODULE PLACED IN 44KEY.OBJ
COMPILER INVOKED BY: D:\专业软件SLF\keil\C51\BIN\C51.EXE 44KEY.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include "reg52.h"
   2          
   3          unsigned char key;
   4          static unsigned int j;
   5          
   6          static void mDelay(j)
   7          {
   8   1          unsigned int i;
   9   1              for(;j>0;j--)
  10   1              {
  11   2                  for(i=124;i>0;i--)
  12   2                      {;}
  13   2              }
  14   1      }
  15          
  16          unsigned char KeyScan(void)
  17          {
  18   1          unsigned char temp;
  19   1              P2=0x0f;
  20   1              temp=P2;                                
  21   1              if((temp&0x0f)!= 0x0f)
  22   1              {
  23   2                  mDelay(10);
  24   2                  if((temp&0x0f)!=0x0f)
  25   2                      {
  26   3                      P2=0xef;
  27   3                      mDelay(1);
  28   3                      temp=P2;
  29   3                      temp&=0x0f;//扫描第1列
  30   3                      if(temp!=0x0f)
  31   3                              {        
  32   4                          switch(temp)
  33   4                                      {
  34   5                                  case 0x0e:key=1;break;
  35   5                                  case 0x0d:key=5;break;
  36   5                                  case 0x0b:key=9;break;
  37   5                                  case 0x07:key=13;break;
  38   5                                  default:break;
  39   5                      }
  40   4                  }
  41   3                      mDelay(2);
  42   3                      P2=0xdf;//第2列
  43   3                      mDelay(1);
  44   3                      temp=P2;
  45   3                      temp&=0x0f;
  46   3                      if(temp!=0x0f)
  47   3                              {        
  48   4                          switch(temp)
  49   4                                      {
  50   5                                  case 0x0e:key=2;break;
  51   5                                  case 0x0d:key=6;break;
  52   5                                  case 0x0b:key=10;break;
  53   5                                  case 0x07:key=14;break;
  54   5                                      default:break;
  55   5                          }
C51 COMPILER V8.15   44KEY                                                                 08/06/2009 13:49:09 PAGE 2   

  56   4                  }
  57   3                      mDelay(2);
  58   3                      P2=0xbf;//第3列
  59   3                      mDelay(1);
  60   3                      temp=P2;
  61   3                      temp&=0x0f;
  62   3                      if(temp!=0x0f)
  63   3                              {        
  64   4                          switch(temp)
  65   4                                      {
  66   5                                  case 0x0e:key=3;break;
  67   5                                  case 0x0d:key=7;break;
  68   5                                  case 0x0b:key=11;break;
  69   5                                  case 0x07:key=15;break;
  70   5                                      default:break;
  71   5                      }
  72   4                  }
  73   3                  mDelay(2);
  74   3                      P2=0x7f;//第4列
  75   3                      mDelay(1);
  76   3                      temp=P2;
  77   3                      temp&=0x0f;
  78   3                      if(temp!=0x0f)
  79   3                              {        
  80   4                          switch(temp)
  81   4                                      {
  82   5                                  case 0x0e:key=4;break;
  83   5                                  case 0x0d:key=8;break;
  84   5                                  case 0x0b:key=12;break;
  85   5                                  case 0x07:key=16;break;
  86   5                                      default:break;
  87   5                      }
  88   4                  }
  89   3              }
  90   2          }
  91   1          return key;
  92   1      }
  93          
  94          unsigned char KeyFree(void)
  95          {
  96   1              key=KeyScan();
  97   1              P2=0x0f;
  98   1              while(P2&0x0f!=0x0f){}
  99   1              return key;
 100   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    305    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      3    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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