lesson 3_4.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_3_4                                                           02/02/2009 17:00:07 PAGE 1   


C51 COMPILER V8.05a, COMPILATION OF MODULE LESSON_3_4
OBJECT MODULE PLACED IN lesson 3_4.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE lesson 3_4.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include<reg52.h>
   2          #define uint unsigned int
   3          #define uchar unsigned int
   4          void delay(uint);
   5          void initial();
   6          sbit dula=P2^6;
   7          sbit wela=P2^7;
   8          sbit d0=P1^0;
   9          uchar num,t;    //定义全局变量
  10          uchar code table[]={    //共阴极LED显示列表数据
  11          0x3f,0x06,0x5b,0x4f,
  12          0x66,0x6d,0x7d,0x07,
  13          0x7f,0x6f,0x77,0x7c,
  14          0x39,0x5e,0x79,0x71}; //存在程序存储器  没有code则存储在随机存储器中
  15          void main()
  16          {
  17   1              t=0;num=1;
  18   1      
  19   1          initial();    //中断初始化
  20   1      
  21   1              wela=1;           //开机显示0
  22   1              P0=0xc0;
  23   1              wela=0;
  24   1      
  25   1              dula=1;
  26   1              P0=0x3f;
  27   1              dula=0;
  28   1      
  29   1              while(1)
  30   1              {
  31   2                      if(t==20)
  32   2                      {
  33   3                      dula=1;
  34   3                      P0=table[num];
  35   3                      dula=0;
  36   3                      t=0;
  37   3                      num++;
  38   3                      if(num>9)
  39   3                      num=0;                  
  40   3                      }
  41   2          }
  42   1      }
  43          
  44          void initial()
  45          {
  46   1              EA=1;                   //INT0初始化
  47   1              EX0=1;
  48   1              TCON=0x01;//IT0=1       //下降沿触发
  49   1      
  50   1              TMOD=0x01;                      //T0初始化
  51   1              TH0=(65536-50000)/256;
  52   1              TL0=(65536-50000)%256;
  53   1              ET0=1;
  54   1              TR0=1;  
  55   1      }
C51 COMPILER V8.05a   LESSON_3_4                                                           02/02/2009 17:00:07 PAGE 2   

  56          
  57          void delay(uint z)
  58          {
  59   1              uint x,y;
  60   1              for(x=z;x>0;x--)
  61   1                      for(y=100;y>0;y--);
  62   1      }
  63          
  64          void INT_0() interrupt 0
  65          {
  66   1              d0=0;
  67   1              delay(5000);
  68   1              d0=1;
  69   1      }
  70          
  71          void T_0() interrupt 1
  72          {
  73   1              TH0=(65536-50000)/256;
  74   1              TL0=(65536-50000)%256;
  75   1              t++;
  76   1      }
  77          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    201    ----
   CONSTANT SIZE    =     32    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      4    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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