ex5-5.lst

步进马达

C51 COMPILER V8.02   EX5_5                                                                 04/30/2008 20:13:16 PAGE 1   


C51 COMPILER V8.02, COMPILATION OF MODULE EX5_5
OBJECT MODULE PLACED IN ex5-5.OBJ
COMPILER INVOKED BY: D:\Keil破解版\C51\BIN\C51.EXE ex5-5.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include <REGX51.H>
   2          #define TIMER0_COUNT 0xEE11/*10000h-((12,000,000/(12*FREQ))*/
   3          #define STOP            0
   4          #define FORWARD         1
   5          #define BACKWARD        2
   6          
   7          char gotkey(); //声明函数
   8          
   9          code forward[8]={0xfe,0xfc,0xfd,0xf9,0xfb,0xf3,0xf7,0xf6};//{0XFE,0XFD,0XFB,0X07};
  10          //提高转速旋转度
  11          
  12          unsigned char timer0_tick=0,i=0,times=40,status=1;
  13          
  14          static void timer0_isr(void) interrupt TF0_VECTOR using 1
  15          {
  16   1        TR0=0;
  17   1        TL0=(TIMER0_COUNT & 0x00FF);
  18   1        TH0=(TIMER0_COUNT >> 8);
  19   1        TR0=1;
  20   1        timer0_tick++;
  21   1        if (timer0_tick==times) 
  22   1        {
  23   2              timer0_tick=0;
  24   2                      i++;
  25   2              if(i==8) i=0;
  26   2              if (status==FORWARD) 
  27   2                      P2=forward[i];
  28   2              if (status==BACKWARD)
  29   2                      {
  30   3                              P2=forward[7-i];//反转时逆向取数。
  31   3      
  32   3                      } 
  33   2        }
  34   1      }
  35          static void timer0_initialize(void)
  36          {
  37   1        EA=0;   
  38   1        timer0_tick=0;
  39   1        TR0=0;
  40   1        TMOD=0x01;
  41   1        TL0=(TIMER0_COUNT & 0x00FF);
  42   1        TH0=(TIMER0_COUNT >> 8);
  43   1        PT0=1;
  44   1        ET0=1;
  45   1        TR0=1;
  46   1        EA=1;
  47   1      }
  48          void main (void)
  49          {
  50   1           unsigned char command;
  51   1           timer0_initialize();
  52   1           do
  53   1               {
  54   2               command=gotkey();
  55   2               if(command==15) status=FORWARD;      //按下F键
C51 COMPILER V8.02   EX5_5                                                                 04/30/2008 20:13:16 PAGE 2   

  56   2               if(command==11) status=BACKWARD;     //按下B键
  57   2               if(command==12) status=STOP;         //按下C键
  58   2               if((command==10) && (times>0)) 
  59   2                       times/=2;
  60   2                                                    //按下A键
  61   2               if(command==13) 
  62   2                       times*=2;       //按下D键
  63   2           } while (1);                           //无穷循环 
  64   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    171    ----
   CONSTANT SIZE    =     16    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      4    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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