t2-smg.lst

RZ-51V20 实例程序

C51 COMPILER V8.18   T2_SMG                                                                01/06/2010 20:16:00 PAGE 1   


C51 COMPILER V8.18, COMPILATION OF MODULE T2_SMG
OBJECT MODULE PLACED IN T2-smg.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE T2-smg.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include <reg52.h>
   2          
   3          unsigned char code ledcode[11] =
   4          { 
   5             0xC0,0xF9,0xA4,0xB0,0x99,
   6             0x92,0x82,0xF8,0x80,0x90,0xff
   7          };
   8          
   9          unsigned char  shift,n = 0;
  10          
  11          char code reserve [3] _at_ 0x3b;  //保留0x3b开始的3个字节
  12          
  13          /**********************************************************
  14          
  15            主函数
  16          
  17          **********************************************************/
  18          main()
  19          {
  20   1         T2CON = 0x00;           //设置T2CON寄存器       
  21   1         TH2 = 0xfc;             //1ms定时常数
  22   1         TL2 = 0x66;
  23   1      
  24   1         ET2 = 1;                //允许Timer2中断
  25   1         EA = 1;                 //总中断允许
  26   1         TR2 = 1;                //启动定时器2
  27   1         shift = 0xfe;           //送位码初值
  28   1         while(1);
  29   1      }
  30          
  31          /**********************************************************
  32          
  33            Timer2中断服务子函数
  34          
  35          **********************************************************/
  36          void  timer2(void) interrupt 5 
  37          { 
  38   1         TF2 = 0;                  //手工清中断标志  
  39   1         TH2 = 0xfc;               //1ms定时常数
  40   1         TL2 = 0x66;
  41   1        
  42   1         if(n >= 8)
  43   1         {
  44   2           n = 0;
  45   2           shift = 0xfe;           //送位码初值
  46   2           P2 = 0xff;              //关闭数码管显示 
  47   2         }
  48   1         else
  49   1         {
  50   2           P0 = ledcode[n+1];        //送段码
  51   2           P2 = shift;             //送位码
  52   2           shift = shift<<1|0x01;  //修改位码
  53   2           n++;
  54   2         }
  55   1      }
C51 COMPILER V8.18   T2_SMG                                                                01/06/2010 20:16:00 PAGE 2   

  56          
  57          /*********************************************************/


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     84    ----
   CONSTANT SIZE    =     11    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      2    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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