exam.lst

这是一个用12864液晶显示屏的驱动程序

C51 COMPILER V7.50   EXAM                                                                  07/12/2005 12:56:47 PAGE 1   


C51 COMPILER V7.50, COMPILATION OF MODULE EXAM
OBJECT MODULE PLACED IN .\exam.obj
COMPILER INVOKED BY: D:\Keil\C51\BIN\C51.EXE E:\C语言\Design\exam.c BROWSE DEBUG OBJECTEXTEND PRINT(.\exam.lst) OBJECT(.
                    -\exam.obj)

line level    source

   1          #include <reg51.h>
   2          #define uchar unsigned char
   3          uchar code table[]={0x3f,6,0x5b,0x4f,0x66,0x6d,0x7d,0x7,0x7f,0x6f,0x00,0x71,0x40};
   4                             //0   1   2    3    4    5    6    7    8   9  BLANK  F        -
   5          uchar code en[]={0xf1,0xf2,0xf4,0xf8};
   6          uchar d[4];      
   7          sbit bell=P1^7;
   8          
   9          
  10          //////////////////////////////子函数声明/////////////////////////
  11          delay(uchar);
  12          void display();
  13          uchar key();
  14          void alarm();
  15          main()
  16          {
  17   1          uchar i,t; 
  18   1          d[3]=11;
  19   1              d[2]=12;
  20   1              d[1]=12;
  21   1              d[0]=0;
  22   1          while(1)
  23   1              {
  24   2                  display();
  25   2                      t=key();
  26   2                      if(t==2) 
  27   2                      {
  28   3                          d[0]++;
  29   3                              if(d[0]>9)d[0]=0;
  30   3                      }
  31   2                      if(t==4)
  32   2                      {
  33   3                          for(i=0;i<d[0];i++) alarm();
  34   3                      }
  35   2              }
  36   1      }
  37          
  38          
  39          delay(uchar d)
  40          {
  41   1          while(--d);
  42   1      }
  43          
  44          
  45          void display()
  46          {
  47   1          uchar i;
  48   1          for(i=0;i<4;i++)
  49   1              {
  50   2                   P2=en[i];
  51   2                       P0=table[d[i]];
  52   2                       delay(250);
  53   2                       P0=0;
  54   2               }
C51 COMPILER V7.50   EXAM                                                                  07/12/2005 12:56:47 PAGE 2   

  55   1      }
  56          
  57          
  58          ////////////////////////////////////////
  59          //                 SW4     SW3     SW2      SW1
  60          //
  61          //keycode: 4       3        2        1
  62          //
  63          ///////////////////////////////////////
  64          uchar key()
  65          {
  66   1          uchar temp,keycode=0;
  67   1              temp=P2&0xf0;
  68   1              if(temp!=0xf0)
  69   1              {
  70   2                  bell=0;
  71   2                  display();
  72   2                      temp=P2&0xf0;
  73   2                      if(temp!=0xf0)
  74   2                      {
  75   3                          temp=P2&0xf0;
  76   3                              if(temp==0x70)       keycode=4;             
  77   3                              else if(temp==0xb0)  keycode=3;
  78   3                              else if(temp==0xd0)  keycode=2;
  79   3                              else if(temp==0xe0)  keycode=1;
  80   3                      }
  81   2              }
  82   1              while((P2&0xf0)!=0xf0) display();
  83   1              bell=1;
  84   1              return keycode;
  85   1      }
  86          
  87          
  88          
  89          void alarm()
  90          {
  91   1          uchar i;
  92   1              bell=0;
  93   1              for(i=0;i<50;i++) display();
  94   1              bell=1;
  95   1              for(i=0;i<50;i++) display();
  96   1      }
  97                   
  98                      
  99          
 100          
 101          
 102          
 103              
 104          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    186    ----
   CONSTANT SIZE    =     17    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      4       1
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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