pi_pwm.lst

直流电机速度闭环PWM控制——ＰＷＭ方面 直流电机速度闭环PWM控制——ＰＷＭ方面

C51 COMPILER V7.08   PI_PWM                                                                08/22/2007 11:32:28 PAGE 1   


C51 COMPILER V7.08, COMPILATION OF MODULE PI_PWM
OBJECT MODULE PLACED IN PI_PWm.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE PI_PWm.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include <stdio.h>
   2          #include <reg51.h>
   3          sbit P1_1=P2^1;
   4          sbit P1_0=P2^0;
   5          unsigned char a;
   6          void delay(unsigned char i)
   7          {  unsigned char j,k;
   8   1          for(;i>0;i--)
   9   1          for(j=15;j>0;j--)
  10   1          for(k=10;k>0;k--); //大约0.1的周期。
  11   1      }
  12          void PWM_creat()
  13          {if(a>=231)   //线性区在10到231转。
  14   1      a=250;
  15   1      if(a<=10) 
  16   1      a=10;
  17   1      P1_1=0; 
  18   1      delay(255-a);
  19   1      P1_1=1;
  20   1      delay(a);
  21   1      }
  22          main()
  23          {a=255;
  24   1       P1_0=1;
  25   1      while(1)
  26   1      {   
  27   2       PWM_creat();
  28   2      }
  29   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     66    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      1    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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