yiwei.lst

51单片机实验例程

C51 COMPILER V7.10   YIWEI                                                                 03/15/2010 15:49:51 PAGE 1   


C51 COMPILER V7.10, COMPILATION OF MODULE YIWEI
OBJECT MODULE PLACED IN yiwei.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE yiwei.C BROWSE DEBUG OBJECTEXTEND

line level    source

   1          /*******************************************************************************
   2          *           按键控制程序                                                                                   *
   3          *  连接方法：JP10（P2） 与 JP1 （LED灯）连接，                                                             *
   4          *            JP11（P0） 与 JP5（按键接口）连接                                 *
   5          *         开始点亮P1LED                                                                *
   6          *         按P01 LED向右移一位                                                  *
   7          *         按P00 LED向左移一位                                                  *
   8          *        连续按动按钮LED会不停的左移或右移                                                                                 *
   9          *******************************************************************************/
  10          #include <reg51.h>
  11          #include <intrins.h>
  12          unsigned char scan_key();
  13          void proc_key(unsigned char key_v);
  14          void delayms(unsigned char ms);
  15          sbit    K1 = P0^0;      //对应按钮K1
  16          sbit    K2 = P0^1;      //对应按钮K2
  17          main()
  18          {
  19   1              unsigned char key_s,key_v;
  20   1              key_v = 0x03;
  21   1              P2 = 0xfe;
  22   1              while(1)
  23   1              {
  24   2                      key_s = scan_key();
  25   2                      if(key_s != key_v)
  26   2                      {
  27   3                              delayms(10);
  28   3                              key_s = scan_key();
  29   3                              if(key_s != key_v)
  30   3                              {       
  31   4                                      key_v = key_s;
  32   4                                      proc_key(key_v);                                        
  33   4                              }
  34   3                      }
  35   2              }       
  36   1      }
  37          unsigned char scan_key()
  38          {
  39   1              unsigned char key_s;
  40   1              key_s = 0x00;
  41   1              key_s |= K2;
  42   1              key_s <<= 1;
  43   1              key_s |= K1;
  44   1              return key_s;           
  45   1      }
  46          void proc_key(unsigned char key_v)
  47          {
  48   1              if((key_v & 0x01) == 0)
  49   1              {
  50   2                      P2 = _cror_(P2,1);
  51   2              }
  52   1              else if((key_v & 0x02) == 0)
  53   1              {
  54   2                      P2 = _crol_(P2, 1);
  55   2              }
C51 COMPILER V7.10   YIWEI                                                                 03/15/2010 15:49:51 PAGE 2   

  56   1      }
  57          void delayms(unsigned char ms)          // 延时子程序
  58          {                                               
  59   1              unsigned char i;
  60   1              while(ms--)
  61   1              {
  62   2                      for(i = 0; i < 120; i++);
  63   2              }
  64   1      }
  65          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    111    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----       2
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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