text1.lst

单片机快速入门原程序

C51 COMPILER V7.50   TEXT1                                                                 05/26/2006 20:01:26 PAGE 1   


C51 COMPILER V7.50, COMPILATION OF MODULE TEXT1
OBJECT MODULE PLACED IN Text1.OBJ
COMPILER INVOKED BY: e:\Keil\C51\BIN\C51.EXE Text1.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include <reg51.h>
   2          #include<stdio.h>
   3          Uart_Init();
   4          int nKeyNumber;
   5          void Key0_Handler();
   6          void Key1_Handler();
   7          void Key2_Handler();
   8          void Key3_Handler();
   9          void Key4_Handler();
  10          void Key5_Handler();
  11          void Key6_Handler();
  12          void Key7_Handler();
  13          main()
  14          {       nKeyNumber=0xFF;
  15   1              EX0=1;
  16   1              EA=1;
  17   1              Uart_Init();
  18   1              while(1)
  19   1              {
  20   2                      if(nKeyNumber==0xFF) ;
  21   2                              //printf("No key pressed\n");
  22   2                      else 
  23   2                              {switch(nKeyNumber)
  24   3                                      {       
  25   4                                              case(0x00):Key0_Handler();
  26   4                                                                      break;
  27   4                                              case(0x01):Key1_Handler();
  28   4                                                                      break;
  29   4                                              case(0x02):Key2_Handler();
  30   4                                                                      break;
  31   4                                              case(0x03):Key3_Handler();
  32   4                                                                      break;
  33   4                                              case(0x04):Key4_Handler();
  34   4                                                                      break;
  35   4                                              case(0x05):Key5_Handler();
  36   4                                                                      break;
  37   4                                              case(0x06):Key6_Handler();
  38   4                                                                      break;
  39   4                                              case(0x07):Key7_Handler();
  40   4                                                                      break;
  41   4                                      
  42   4                                      }
  43   3                                      nKeyNumber=0xFF;
  44   3                              }
  45   2      
  46   2              }
  47   1      }
  48          Uart_Init()
  49                  {SCON = 0x52;    /* 设置串行口控制寄存器SCON*/
  50   1               TMOD = 0x20;    /* 12M时钟时波特率为2400  */
  51   1               TCON = 0x69;    /* TCON */
  52   1               TH1 =  0xf3;    /* TH1 */
  53   1              }
  54          void int0() interrupt 0 using 0
  55          {
C51 COMPILER V7.50   TEXT1                                                                 05/26/2006 20:01:26 PAGE 2   

  56   1      int i;  
  57   1      for(i=0;i<8;i++)
  58   1              if(((P1>>i)&0x01)==0)
  59   1                                      nKeyNumber=i;
  60   1      }
  61          void Key0_Handler()
  62                  {printf("key NO. 0 down\n");
  63   1              }
  64          void Key1_Handler()
  65                  {printf("key NO. 1 down\n");
  66   1              }
  67          void Key2_Handler()
  68                  {printf("key NO. 2 down\n");
  69   1              }
  70          void Key3_Handler()
  71                  {printf("key NO. 3 down\n");
  72   1              }
  73          void Key4_Handler()
  74                  {printf("key NO. 4 down\n");
  75   1              }
  76          void Key5_Handler()
  77                  {printf("key NO. 5 down\n");
  78   1              }
  79          void Key6_Handler()
  80                  {printf("key NO. 6 down\n");
  81   1              }
  82          void Key7_Handler()
  83                  {printf("key NO. 7 down\n");
  84   1              }
  85          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    239    ----
   CONSTANT SIZE    =    128    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      2    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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