main.lst

利用MCS51单片机89C51可以实现0-9999计数

C51 COMPILER V8.02   MAIN                                                                  05/21/2007 18:31:24 PAGE 1   


C51 COMPILER V8.02, COMPILATION OF MODULE MAIN
OBJECT MODULE PLACED IN main.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE main.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include "STC89C51RC.H"//STC单片机头文件，相当与一般51的reg51.h
   2          #include <absacc.h>
   3          
   4          #define SEG1 XBYTE[0xffec]
   5          #define SEG2 XBYTE[0xffed]
   6          #define SEG3 XBYTE[0xffee]
   7          #define SEG4 XBYTE[0xffef]
   8          
   9          unsigned char ledmap[]=  //共阴LED数码管译码表
  10          {       
  11                  0x3f,0x06,0x5b,0x4f,0x66,       //0,1,2,3,4,
  12                  0x6d,0x7d,0x07,0x7f,0x6f,       //5,6,7,8,9,            
  13                  0xbf,0x86,0xdb,0xcf,0xe6,       //0.,1.,2.,3.,4.,
  14                  0xed,0xfd,0x87,0xff,0xef,       //5.,6.,7.,8.,9.,       
  15          };
  16          
  17          
  18          unsigned int counter;
  19          
  20          void timer2_init(void)
  21          {
  22   1       T2MOD = 0;
  23   1       //16位自动重装载模式，RCAP2HL为预设值
  24   1       RCAP2H = 0x0;
  25   1       RCAP2L = 0x0;
  26   1       TR2 = 1;
  27   1       ET2 = 1;
  28   1      }
  29          
  30          //定时中断服务
  31          void Timer2(void) interrupt 5 using 2
  32          {
  33   1              static unsigned char time=0;
  34   1              TF2 = 0;
  35   1                      
  36   1              RCAP2H = 0x0;
  37   1              RCAP2L = 0x0;
  38   1      
  39   1              if(time++ > 10)//调整计数器速度
  40   1              {
  41   2                      counter ++;
  42   2                      SEG1 = ~ledmap[counter/1000%10];                
  43   2                      SEG2 = ~ledmap[counter/100%10];
  44   2                      SEG3 = ~ledmap[counter/10%10];
  45   2                      SEG4 = ~ledmap[counter%10];
  46   2                      time = 0; 
  47   2              }
  48   1      }
  49          
  50          main()
  51          {
  52   1              timer2_init();
  53   1              EA = 1;
  54   1              while(1);
  55   1      }
C51 COMPILER V8.02   MAIN                                                                  05/21/2007 18:31:24 PAGE 2   

  56          
  57          
  58          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    170    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =     23    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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