key.lst

MCU51-JZ01单片机开发板实验例程

C51 COMPILER V7.50   KEY                                                                   07/28/2006 11:27:17 PAGE 1   


C51 COMPILER V7.50, COMPILATION OF MODULE KEY
OBJECT MODULE PLACED IN key.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE key.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          /*******************************************************************************
   2          *  标题:  MCU51-JZ01单片机开发系统演示程序            
   3          *  文件:  key.C                                                              
   4          *  日期:  2005-7-4                                                             
   5          *  版本:  1.0                                                                                             
             -                 
   6          *  网站： http://www.electronstudy.com 
   7          ********************************************************************************
   8          *  描述:                                                                       *
   9          *       I/O口扫描键盘输入试验;按下k0时，led3和led2点亮；按下k1时led1和led0点亮 *     
  10          *                                                                              *
  11          *                                                                              *
  12          *******************************************************************************/
  13          
  14          #include<reg51.h>
  15          
  16          sbit k0 = P1^6;                    // 定义按键k0
  17          sbit k1 = P1^7;                    // 定义按键k1
  18          
  19          void delay(void)                   // 延时子程序 
  20          { 
  21   1         unsigned char k; 
  22   1         for(k=248;k>0;k--); 
  23   1      } 
  24          
  25          void main(void) 
  26          { 
  27   1         P0 = 0xf0;       
  28   1         while(1)
  29   1         { 
  30   2            if(k0 == 0)
  31   2                {
  32   3                        delay();
  33   3                        if(k0 == 0)
  34   3                            P0 = 0x0c;           // led3和led2点亮
  35   3                        else
  36   3                            P0 = 0xf0;
  37   3                }
  38   2                if(k1 == 0)
  39   2                {
  40   3                        delay();
  41   3                        if(k1 == 0)
  42   3                            P0 = 0x03;           // led1和led0点亮
  43   3                        else
  44   3                            P0 = 0xf0;
  45   3                }
  46   2                      
  47   2         } 
  48   1      } 
  49          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     44    ----
   CONSTANT SIZE    =   ----    ----
C51 COMPILER V7.50   KEY                                                                   07/28/2006 11:27:17 PAGE 2   

   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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