bled.lst

51单片机实验例程

C51 COMPILER V7.10   BLED                                                                  03/15/2010 16:37:28 PAGE 1   


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

line level    source

   1          /******************************************************************/
   2          /*            按键状态显示试验                                                                            *
   3          /*                                                                                                                *
   4          /*  连接方法：连接JP10（P0)与JP5（按钮接口)                               *
   5          /*                            JP11 (P2)与JP1(LED接口)                                             *
   6                                                                                                                                            *
   7          /*按键则点亮LED灯，8路指示灯接p0口                                                        *
   8          /******************************************************************/
   9          #include <reg51.h>
  10          #include <intrins.h>
  11          
  12          sbit BEEP = P1^5;
  13          sbit RELAY = P1^4;
  14          
  15          sbit  K1 = P0^0; sbit  K2 = P0^1;
  16          sbit  K3 = P0^2; sbit  K4 = P0^3;
  17          sbit  K5 = P0^4; sbit  K6 = P0^5;
  18          
  19          void beep();
  20          /*********************************************************/
  21          main()
  22          {
  23   1         
  24   1         while(1)
  25   1         {
  26   2                P2 = 0xff;
  27   2                if(K1==0)
  28   2                P2 = 0xfe;
  29   2               
  30   2                if(K2 == 0)
  31   2                P2 = 0xfd;
  32   2      
  33   2                if(!K3)
  34   2                P2 = 0xfb;
  35   2      
  36   2                if(!K4)
  37   2                P2 = 0xf7;
  38   2      
  39   2                        
  40   2                if (!K5 )
  41   2                 beep();      //喇叭发声   
  42   2      
  43   2                RELAY = 1;
  44   2                if (!K6 )
  45   2                RELAY = 0;  //通过了反相器
  46   2              
  47   2         }
  48   1      }
  49          
  50          
  51          /**********************************************************/
  52          void beep()
  53          {
  54   1        unsigned char i , j;
  55   1        for (i=0;i<100;i++)
C51 COMPILER V7.10   BLED                                                                  03/15/2010 16:37:28 PAGE 2   

  56   1         {
  57   2        
  58   2         BEEP=!BEEP;                 //BEEP取反
  59   2         for (j = 0 ; j<250 ; j++)   //需要产生方波
  60   2          _nop_();
  61   2         } 
  62   1        BEEP=1;                      //关闭蜂鸣器
  63   1      }
  64          
  65          
  66          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     60    ----
   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)