渐明渐灭小灯.lst

小灯利用单片机脉冲的占空比来调整明暗

C51 COMPILER V8.08   渐明渐灭小灯                                                          12/10/2008 17:59:15 PAGE 1   


C51 COMPILER V8.08, COMPILATION OF MODULE 渐明渐灭小灯
OBJECT MODULE PLACED IN 渐明渐灭小灯.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE 渐明渐灭小灯.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          /**************************************
   2          程序：渐明渐灭小灯
   3          作者：赖军
   4          日期：2008-12-8
   5          说明：利用占空比来改变灯灭灯亮。
   6          **************************************/
   7          #include<AT89X52.h>
   8          
   9          void delay0(unsigned int);
  10          
  11          sbit      LED0 = P1^0;
  12          
  13          void main(){
  14   1                              unsigned int i;
  15   1                              unsigned int k=0;
  16   1              laijun: for(i=0;i<250;i++){
  17   2                                                              
  18   2                                                                      LED0=1;
  19   2                                                                      delay0(280-k);
  20   2                                                                      LED0=0;
  21   2                                                                      delay0(k++);
  22   2                                                                      }
  23   1                              for(i=0;i<250;i++){
  24   2                                                                      LED0=0;
  25   2                                                                      delay0(k--);
  26   2                                                                      LED0=1;
  27   2                                                                      delay0(280-k);
  28   2                                                                      }
  29   1                              delay0(4000);
  30   1                              goto laijun;
  31   1                              }
  32          void delay0(unsigned int p){
  33   1                                                                      unsigned char i;
  34   1                                                                      while(p--){
  35   2                                                                                              for(i=0;i<3;i++);
  36   2                                                                                              }
  37   1                                                              }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    132    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----       4
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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