cs9-2.lst

《手把手教你学单片机的C程序设计》及实验程序

C51 COMPILER V7.06   CS9_2                                                                 01/07/2007 12:53:33 PAGE 1   


C51 COMPILER V7.06, COMPILATION OF MODULE CS9_2
OBJECT MODULE PLACED IN CS9-2.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE CS9-2.c BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          #include <REG51.H>              
   2          #define uchar unsigned char     
   3          #define uint unsigned int               
   4          uchar code SEG7[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
   5          //===============================
   6          uchar a=0,b=0,c;                        
   7          //----------------------------------
   8          uchar key_S1(void);             
   9          uchar key_S2(void);                     
  10          void delay(uint k);                     
  11          //----------------------------------------
  12          void main(void)                         
  13          {       uchar i;                                
  14   1              while(1)                                
  15   1              {                                               
  16   2              b= key_S1();                            
  17   2              a= key_S2();                    
  18   2              if(a>b)c=0x76;                  
  19   2              if(a<b)c=0x38;          
  20   2              if(a==b)c=0x09;         
  21   2                      for(i=0;i<50;i++)               
  22   2                      {                               
  23   3                      P0= SEG7[a];            
  24   3                      P2=0xfd;                        
  25   3                      delay(2);                       
  26   3                      P0= SEG7[b];            
  27   3                      P2=0xfe;                        
  28   3                      delay(2);                       
  29   3                      P0= c;                  
  30   3                      P2=0xf7;                        
  31   3                      delay(2);                       
  32   3                      }                               
  33   2              }                                       
  34   1      }                                                       
  35          //----------------------------------------
  36          void delay(uint k)                              
  37          {                                               
  38   1      uint i,j;                                       
  39   1      for(i=0;i<k;i++){                               
  40   2      for(j=0;j<121;j++)                      
  41   2      {;}}                                            
  42   1      }                                               
  43          //---------------------------------------
  44          uchar key_S1(void)                      
  45          {static uchar x;                        
  46   1      P3=0xff;                                        
  47   1      if(P3!=0xff)                                    
  48   1              {delay(10);                             
  49   2                      if(P3==0xfb)                    
  50   2                      {                                       
  51   3                      x=x+1;                          
  52   3                      }                                       
  53   2              }                                               
  54   1      if(x>9)x=0;                                     
  55   1      return x;                                       
C51 COMPILER V7.06   CS9_2                                                                 01/07/2007 12:53:33 PAGE 2   

  56   1      }                                               
  57          //----------------------------------------
  58          uchar key_S2(void)                      
  59          {static uchar y;                        
  60   1      P3=0xff;                                        
  61   1      if(P3!=0xff)                    
  62   1              {delay(10);                     
  63   2                      if(P3==0xf7)                            
  64   2                      {                                       
  65   3                      y=y+1;                                  
  66   3                      }                                       
  67   2              }                                               
  68   1      if(y>9)y=0;                                     
  69   1      return y;                                       
  70   1      }                                               


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    195    ----
   CONSTANT SIZE    =     10    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      5       1
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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