16key-b.lst

经过keil编译

C51 COMPILER V8.02   16KEY_B                                                               05/27/2006 17:54:51 PAGE 1   


C51 COMPILER V8.02, COMPILATION OF MODULE 16KEY_B
OBJECT MODULE PLACED IN 16KEY-B.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE 16KEY-B.C BROWSE DEBUG OBJECTEXTEND

line level    source

   1          /*******************************************************************/
   2          /*                                                                 */
   3          /* ME300B单片机开发系统演示程序 - 矩阵键盘键值显示                 */
   4          /*                                                                 */
   5          /* 一位数码管显示                                                  */
   6          /*                                                                 */
   7          /* 邮箱:  [e-mail]                                      */
   8          /* 网站： http://www.willar.com                                    */
   9          /* 作者： gguoqing                                                 */
  10          /* 时间： 2006/05/27                                              */
  11          /*                                                                 */                                     
             -                             
  12          /*【版权】Copyright(C)伟纳电子 www.willar.com  All Rights Reserved */
  13          /*【声明】此程序仅用于学习与参考，引用请注明版权和作者信息！       */
  14          /*                                                                 */
  15          /*******************************************************************/
  16          
  17          #include <reg51.h>
  18          #include <intrins.h>
  19                                  
  20          #define uchar unsigned char
  21          #define uint  unsigned int
  22          
  23          uchar table[17]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82, //0,1,2,3,4,5,6
  24            0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e,0xBF};//7,8,9,A,B,C,D,E,F,-
  25          
  26          sbit BEEP = P3^7;         //蜂鸣器驱动线
  27          uchar dis_buf;            //显示缓存
  28          uchar  temp;
  29          uchar  key;               //键顺序吗
  30          
  31          void beep();              //蜂鸣器
  32          void delay0(uchar x);      //x*0.14MS
  33          //--------------------------------------------------
  34          /* 延时子程序*/
  35          
  36          void  delay(uchar x)
  37          { uchar j;
  38   1          while((x--)!=0)
  39   1          { for(j=0;j<125;j++)
  40   2               {;}
  41   2          }
  42   1      }
  43          //--------------------------------------------------
  44           /*键扫描子程序*/
  45           void  keyscan(void)
  46           { 
  47   1          P1=0x0F;         //低四位输入  
  48   1          delay(1);
  49   1              temp=P1;         //读P1口 
  50   1          temp=temp&0x0F;
  51   1          temp=~(temp|0xF0);
  52   1          if(temp==1)
  53   1              key=0;
  54   1          else if(temp==2)
C51 COMPILER V8.02   16KEY_B                                                               05/27/2006 17:54:51 PAGE 2   

  55   1              key=1;
  56   1          else if(temp==4)
  57   1              key=2;
  58   1          else if(temp==8)
  59   1              key=3;
  60   1          else
  61   1              key=16;
  62   1              
  63   1          P1=0xF0;        //高四位输入
  64   1          delay(1);
  65   1              temp=P1;          //读P1口       
  66   1          temp=temp&0xF0;
  67   1          temp=~((temp>>4)|0xF0);
  68   1          if(temp==1)
  69   1              key=key+0;
  70   1          else if(temp==2)
  71   1              key=key+4;
  72   1          else if(temp==4)
  73   1              key=key+8;
  74   1          else if(temp==8)
  75   1              key=key+12;
  76   1          else
  77   1              key=16;
  78   1              
  79   1           dis_buf=table[key];        //查表得键值
  80   1       }
  81          //--------------------------------------------------
  82          /*判断键是否按下*/
  83           void  keydown(void)
  84           {  
  85   1              P1=0xF0;
  86   1              if(P1!=0xF0)
  87   1              {
  88   2                keyscan();
  89   2                beep();
  90   2           // while(P1!=0xF0);  //等待键释放
  91   2              }
  92   1       } 
  93          //--------------------------------------------------
  94          void beep()
  95          {
  96   1        unsigned char i;
  97   1        for (i=0;i<100;i++)
  98   1         {
  99   2         delay0(4);
 100   2         BEEP=!BEEP;       //BEEP取反
 101   2         } 
 102   1         BEEP=1;           //关闭蜂鸣器
 103   1         delay(250);       //延时     
 104   1      }
 105          //--------------------------------------------------
 106          void delay0(uchar x)    //x*0.14MS
 107          {
 108   1       unsigned char i;
 109   1        while(x--)
 110   1       {
 111   2        for (i = 0; i<13; i++) {}
 112   2       }
 113   1      }
 114          //-------------------------------------------------- 
 115              main()
 116           {
C51 COMPILER V8.02   16KEY_B                                                               05/27/2006 17:54:51 PAGE 3   

 117   1          P0=0xFF;        //置P0口
 118   1          P2=0xFF;        //置P2口  
 119   1          dis_buf=0xBF;
 120   1          
 121   1          while(1)
 122   1          { 
 123   2             keydown();
 124   2                 P0 = dis_buf;   //键值送显示
 125   2             delay(2);
 126   2             P2 = 0x7F;
 127   2          }
 128   1        }   
 129          //--------------------------------------------------    


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    240    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =     20       1
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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