ex01.lst

c51 led程序

C51 COMPILER V7.03   EX01                                                                  12/02/2005 20:13:26 PAGE 1   


C51 COMPILER V7.03, COMPILATION OF MODULE EX01
OBJECT MODULE PLACED IN ex01.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE ex01.C BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          /*******************************************************************************
   2            Title:  演示程序1 - LED流水灯                                                 *
   3            Name:   ex01.c                                                                *
   4            Date:   2005-5-5                                                              *
   5            Ver:    1.0                                                                   *                         
             -                       *
   6            web：   http://www.mcustudy.com                                               *
   7          ********************************************************************************
   8                                                                                          *
   9                   延时实现LED流水灯效果                                                  *
  10                                                                                          *       
  11                                                                                          *
  12          ********************************************************************************/
  13          
  14          #include<reg51.h>
  15          #include <intrins.h>
  16          
  17          
  18          void delayms(unsigned char ms)  // 延时子程序
  19          {                                               
  20   1              unsigned char i;
  21   1              while(ms--)
  22   1              {
  23   2                      for(i = 0; i < 120; i++);
  24   2              }
  25   1      }
  26          
  27          main()
  28          {
  29   1              unsigned char LED;
  30   1              LED = 0xfe;
  31   1              P0 = LED;
  32   1              
  33   1              while(1)
  34   1              {
  35   2                      delayms(200);                   
  36   2                      LED = _crol_(LED,1);            //循环右移1位，点亮下一个LED
  37   2                      P0 = LED;
  38   2              }
  39   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     43    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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