main.lst

从零开始学51单片机源代码

C51 COMPILER V8.08   MAIN                                                                  07/02/2012 12:58:32 PAGE 1   


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

line level    source

   1          //main.c
   2          #include <reg51.h>      //包含头文件
   3          
   4           //定义端口寄存器
   5          sfr P0M0 = 0X93;
   6          sfr P0M1 = 0X94;
   7          sfr P1M0 = 0X91;
   8          sfr P1M1 = 0X92;
   9          sfr P2M0 = 0X95;
  10          sfr P2M1 = 0X96;  
  11          sfr P3M0 = 0Xb1;
  12          sfr P3M1 = 0Xb2;    
  13          
  14          //定义端口 
  15          sbit s1 = P1^0;
  16          sbit s2 = P1^1;
  17          sbit d1 = P0^0;
  18          sbit d2 = P0^1;
  19          
  20          //定义延时函数
  21          void ms_delay(unsigned int t)
  22          {
  23   1              unsigned  int  i;
  24   1              for (t; t > 0; t--)     //外层循环t次    
  25   1                      for (i = 110;i > 0; i--)        //内层循环110次            
  26   1                      ;
  27   1      }
  28          
  29          
  30          main()
  31          {
  32   1              //配置端口模式 
  33   1              P1M1 = 0x03;    //p1.0 p1.1配置为输入 
  34   1              P1M0 = 0x00;
  35   1      
  36   1              P0M1 = 0x03;  //P0.0 P0.1配置为输出 
  37   1              P0M0 = 0x03;
  38   1      
  39   1              d1 = 1; //关闭发光二极管 
  40   1              d2 = 1;
  41   1      
  42   1              while(1)
  43   1              {
  44   2                      //s1按键 
  45   2                      if (s1 == 0)    //如果s1被按下 
  46   2                      {
  47   3                              ms_delay(20);  //延时消抖 
  48   3                              if (s1 == 0)
  49   3                              {
  50   4                                 d1 = 0;      //点亮d1
  51   4                              }
  52   3                      }
  53   2                      else   //没按下就关闭 
  54   2                      {
  55   3                              d1 = 1;
C51 COMPILER V8.08   MAIN                                                                  07/02/2012 12:58:32 PAGE 2   

  56   3                      }       
  57   2      
  58   2                      //S2按键 
  59   2                      if (s2 == 0)    //如果s2被按下 
  60   2                      {
  61   3                              ms_delay(20);  //延时消抖 
  62   3                              if (s2 == 0)
  63   3                              {
  64   4                                 d2 = 0;      //点亮d1
  65   4                              }
  66   3                      }
  67   2                      else   //没按下就关闭 
  68   2                      {
  69   3                              d2 = 1;
  70   3                      }       
  71   2              }
  72   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     86    ----
   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)