main.lst

从零开始学51单片机源代码

C51 COMPILER V8.08   MAIN                                                                  07/02/2012 17:53:34 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 alert = P3^2;      //报警输入 
  16          sbit speaker = P0^1;  //报警输出 
  17          sbit led = P0^0;        //工作指示 
  18          
  19          bit run_flag;   // 运行标志 
  20          
  21          //定义延时函数
  22          void ms_delay(unsigned int t)
  23          {
  24   1              unsigned  int  i;
  25   1              for (t; t > 0; t--)     //外层循环t次    
  26   1                      for (i = 110;i > 0; i--)        //内层循环110次            
  27   1                      ;
  28   1      }  
  29          
  30          //INT0中断服务程序 
  31          void  INT0_interrupt() interrupt 0
  32          {
  33   1              EX0 = 0;  //关INT0中断 
  34   1              run_flag = 0; 
  35   1      }
  36          
  37          main()
  38          {
  39   1              
  40   1      
  41   1              //配置端口模式 
  42   1              P0M1 = 0x03;  //P0.1、P0.0输出  
  43   1              P0M0 = 0x03;
  44   1              P1M1 = 0x04;  //P3.2输入 
  45   1              P1M0 = 0x00; 
  46   1      
  47   1              IT0 = 0;//设置INT0为低电平触发 
  48   1              EX0 = 1;//允许INT0中断 
  49   1              EA = 1;//开总中断 
  50   1      
  51   1              alert = 1;
  52   1              speaker = 1;
  53   1              led = 1;
  54   1               run_flag  = 1;
  55   1              while(1)
C51 COMPILER V8.08   MAIN                                                                  07/02/2012 17:53:34 PAGE 2   

  56   1              {
  57   2                      if (run_flag)
  58   2                      {//正常运行 
  59   3                              led = ~led;
  60   3                              speaker = 1;
  61   3                              ms_delay(500);
  62   3                      }
  63   2                      else
  64   2                      {
  65   3                              led = 0;
  66   3                              speaker = ~speaker;
  67   3                              ms_delay(250);
  68   3                      }
  69   2      
  70   2                      if (alert == 1)
  71   2                      {
  72   3                              run_flag = 1;   //恢复正常 
  73   3                              EX0 = 1;
  74   3                      }
  75   2              }
  76   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     94    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =      1    ----
END OF MODULE INFORMATION.


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