main.lst

从零开始学51单片机源代码

C51 COMPILER V8.08   MAIN                                                                  07/02/2012 17:03:24 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 start = P1^0;      //启动开关 
  16          sbit motor = P0^0; //电机运行控制 
  17          
  18          //定义延时函数
  19          void ms_delay(unsigned int t)
  20          {
  21   1              unsigned  int  i;
  22   1              for (t; t > 0; t--)     //外层循环t次    
  23   1                      for (i = 110;i > 0; i--)        //内层循环110次            
  24   1                      ;
  25   1      }  
  26          
  27          //INT0中断服务程序 
  28          void  INT0_interrupt() interrupt 0
  29          {
  30   1              motor = 0; //停止运转  
  31   1      }
  32          
  33          main()
  34          {
  35   1              //配置端口模式 
  36   1              P0M1 = 0x01;  //P0.0输出  
  37   1              P0M0 = 0x01;
  38   1              P3M1 = 0x04;  //P3.2输入 
  39   1              P3M0 = 0x00; 
  40   1      
  41   1              IT0 = 1;//设置INT0为下降沿触发 
  42   1              EX0 = 1;//允许INT0中断 
  43   1              EA = 1;//开总中断 
  44   1      
  45   1              ms_delay(100);
  46   1              start = 1; //启动开关置高电平 
  47   1              motor = 0; //电机不运行 
  48   1              
  49   1              while(1)
  50   1              {
  51   2                      if (start == 0) //如果启动信号到位 
  52   2                      {
  53   3                              ms_delay(20);//延时消抖 
  54   3                              if (start == 0) //确认 
  55   3                              {
C51 COMPILER V8.08   MAIN                                                                  07/02/2012 17:03:24 PAGE 2   

  56   4                                      motor = 1; //启动电机 
  57   4                              }
  58   3                      }               
  59   2              }
  60   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     78    ----
   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)