key-led.lst

单片机C语言程序设计实训100例

C51 COMPILER V8.08   KEY_LED                                                               08/10/2009 09:52:11 PAGE 1   


C51 COMPILER V8.08, COMPILATION OF MODULE KEY_LED
OBJECT MODULE PLACED IN key-led.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE key-led.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include <reg52.h>
   2          #include <intrins.h>
   3          #define uchar unsigned char
   4          #define uint unsigned int
   5          
   6          uchar code DSY_CODE[]=
   7          {
   8                  0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e,0x00
   9          };
  10          uchar code KeyCodeTable[]=
  11          {
  12                  0x11,0x12,0x14,0x18,0x21,0x22,0x24,0x28,0x41,0x42,0x44,0x48,0x81,0x82,0x84,0x88
  13          };
  14          
  15          void Delay()
  16          {
  17   1              uchar i;
  18   1              for(i=0;i<200;i++);
  19   1      }
  20          
  21          uchar Keys_Scan()
  22          {
  23   1              uchar sCode,kCode,i,k;
  24   1              P1 = 0xf0;
  25   1              if((P1&0xf0)!=0xf0)
  26   1              {
  27   2                      Delay();
  28   2                      if((P1&0xf0)!=0xf0)
  29   2                      {
  30   3                              sCode = 0xfe;
  31   3                              for(k=0;k<4;k++)
  32   3                              {
  33   4                                      P1 = sCode;
  34   4                                      if((P1&0xf0)!=0xf0)
  35   4                                      {
  36   5                                              kCode = ~P1;
  37   5                                              for(i=0;i<16;i++)
  38   5                                              {
  39   6                                                      if(kCode == KeyCodeTable[i])
  40   6                                                              return i;
  41   6                                              }
  42   5                                      }
  43   4                                      else 
  44   4                                              sCode = _crol_(sCode,1);
  45   4                              }
  46   3                      }
  47   2              }
  48   1              return -1;
  49   1      }
  50          
  51          void main()
  52          {
  53   1              uchar KeyNO = -1;
  54   1              uchar i,P2_LED,P3_LED;
  55   1              while(1)
C51 COMPILER V8.08   KEY_LED                                                               08/10/2009 09:52:11 PAGE 2   

  56   1              {
  57   2                      KeyNO = Keys_Scan();
  58   2                      if(KeyNO != -1)
  59   2                      {
  60   3                              P2_LED = 0xff;
  61   3                              P3_LED = 0xff;
  62   3                              for(i=0;i<=KeyNO;i++)
  63   3                              {
  64   4                                      if(i<8)
  65   4                                              P3_LED>>=1;
  66   4                                      else
  67   4                                              P2_LED>>=1;
  68   4                              }
  69   3                              P3 = P3_LED;
  70   3                              P2 = P2_LED;
  71   3                      }
  72   2              }
  73   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    128    ----
   CONSTANT SIZE    =     33    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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