028_pwm信号产生器.lst

本代码是关于PWM信号产生器的。请注意查收

C51 COMPILER V8.01   028_PWM信号瞋蒧芲                                                     03/09/2006 20:52:59 PAGE 1   


C51 COMPILER V8.01, COMPILATION OF MODULE 028_PWM信号瞋蒧芲
OBJECT MODULE PLACED IN 028_PWM信号产生器.OBJ
COMPILER INVOKED BY: d:\Keil\C51\BIN\C51.EXE 028_PWM信号产生器.c BROWSE DEBUG OBJECTEXTEND TABS(2)

line level    source

   1          #include <REGX51.H>
   2          
   3          
   4          
   5          #define PWM P0_0//define PWM Signal Output Port
   6          
   7          unsigned char PWM_High=50;//PWM输出高电平时所占用的时间
   8          unsigned char PWM_Count=0;//PWM软件计数器
   9          
  10          //定时器T0每100uS定时溢出中断服务程序
  11          //产生频率为100Hz的PWM信号
  12          void timer0(void) interrupt 1
  13          {
  14   1        if(PWM_Count<PWM_High)PWM=1;
  15   1          else PWM=0;
  16   1        PWM_Count++;
  17   1        if(PWM_Count==100)PWM_Count=0;    
  18   1      }
  19          
  20          void main(void)
  21          {
  22   1        TMOD=0x02;
  23   1        TH0=256-184;
  24   1        TL0=256-184;
  25   1        TR0=1;
  26   1        ET0=1;
  27   1        EA=1;
  28   1      
  29   1        while(1)
  30   1          {
  31   2            ;
  32   2          }
  33   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     49    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      2    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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