lesson 4_3.lst

有51单片机C语言基础后在较短时间内学会51单片机C。

C51 COMPILER V8.05a   LESSON_4_3                                                           02/02/2009 23:04:29 PAGE 1   


C51 COMPILER V8.05a, COMPILATION OF MODULE LESSON_4_3
OBJECT MODULE PLACED IN lesson 4_3.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE lesson 4_3.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include<reg52.h>
   2          #define uint unsigned int
   3          #define uchar unsigned char
   4          uchar temp,aa,shi,ge,i;
   5          sbit dula=P2^6;
   6          sbit wela=P2^7;
   7          uchar code table[]={
   8          0x3f,0x06,0x5b,0x4f,
   9          0x66,0x6d,0x7d,0x07,
  10          0x7f,0x6f,0x77,0x7c,
  11          0x39,0x5e,0x79,0x71};
  12          uchar code table_w[]={
  13          0xfe,0xfd,0xfb,0xf7,0xef,0xdf};
  14          void display(uchar shi,uchar ge);
  15          void delay(uint z);
  16          void init();
  17          void main()
  18          {       
  19   1              init();//初始化子程序
  20   1              while(1)
  21   1              {
  22   2                      if(aa==20)
  23   2                        {
  24   3                              aa=0;   //不要忘记清0
  25   3                              temp++;
  26   3                              if(temp==60)
  27   3                                 {
  28   4                                              temp=0;
  29   4                                 }
  30   3                              shi=temp/10;
  31   3                              ge=temp%10;
  32   3                        }
  33   2                      display(shi,ge);
  34   2              }
  35   1      }
  36          
  37          void delay(uint z)
  38          {
  39   1              uint x,y;
  40   1              for(x=z;x>0;x--)
  41   1                      for(y=110;y>0;y--);
  42   1      }
  43          
  44          void display(uchar shi,uchar ge)
  45          {               for(i=0;i<2;i++)
  46   1                      {
  47   2              dula=1;
  48   2                      if(i==0)  P0=table[shi];
  49   2                      if(i==1)  P0=table[ge];
  50   2                      dula=0;
  51   2                      P0=0xff;        //消隐
  52   2                      wela=1;
  53   2                      P0=table_w[i];
  54   2                      wela=0;
  55   2                      delay(3);
C51 COMPILER V8.05a   LESSON_4_3                                                           02/02/2009 23:04:29 PAGE 2   

  56   2                      }
  57   1      }
  58          
  59          void init()
  60          {       
  61   1              wela=0;
  62   1              dula=0;
  63   1              temp=0;
  64   1              TMOD=0x01;
  65   1              TH0=(65536-50000)/256;
  66   1              TL0=(65536-50000)%256;
  67   1              EA=1;
  68   1              ET0=1;
  69   1              TR0=1;  
  70   1      }
  71          
  72          void timer0() interrupt 1
  73          {
  74   1              TH0=(65536-50000)/256;
  75   1              TL0=(65536-50000)%256;
  76   1              aa++;   
  77   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    175    ----
   CONSTANT SIZE    =     22    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      5    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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