led.lst

51单片机实验例程

C51 COMPILER V7.10   LED                                                                   03/17/2010 23:17:45 PAGE 1   


C51 COMPILER V7.10, COMPILATION OF MODULE LED
OBJECT MODULE PLACED IN LED.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE LED.C BROWSE DEBUG OBJECTEXTEND

line level    source

   1          /*******************************************************************************
   2          *  描述:   跑马灯程序                                                          *
   3          *  连接方法： JP11（P2）和JP1(LED灯) 用8PIN排线连接起来                                            *
   4          *                                                                                                                                                          *
   5          *******************************************************************************/
   6          
   7          #include<reg51.h>
   8          #include <intrins.h>
   9          
  10          /*****************************************************************************
  11          *  延时子程序                                                                                                                        *
  12          *                                                                                                                                                        *
  13          ******************************************************************************/
  14          void delayms(unsigned char ms)
  15          {
  16   1              unsigned char i;
  17   1              while(ms--)
  18   1              {
  19   2              for(i = 0; i < 120; i++);
  20   2              }
  21   1      }
  22          
  23          /*****************************************************************************
  24          *  主程序                                                                                                                                *
  25          *                                                                                                                                                        *
  26          ******************************************************************************/
  27           main()
  28          {
  29   1              unsigned char LED;
  30   1              LED = 0xfe;
  31   1              P2 = LED;
  32   1              while(1)
  33   1              {
  34   2              delayms(250);
  35   2              LED = _crol_(LED,1);            //循环右移1位，点亮下一个LED  此函数位库函数
  36   2              P2 = LED;
  37   2              }
  38   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)