keycheck.lst

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C51 COMPILER V8.02   KEYCHECK                                                              08/19/2008 10:15:47 PAGE 1   


C51 COMPILER V8.02, COMPILATION OF MODULE KEYCHECK
OBJECT MODULE PLACED IN keycheck.OBJ
COMPILER INVOKED BY: C:\Keil\uv3\C51\BIN\C51.EXE keycheck.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include <reg52.h>
   2          #define unchar unsigned char 
   3          unchar keystu=0xff;
   4          unchar sweep[]={0xef,0xdf,0xbf,0x7f};
   5          unchar seg[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e};
   6          bit t1s=0;
   7          bit t10ms=0;
   8          
   9          /********************T1初始化，10ms中断一次，16位重装方式****************************/
  10          void initt1()
  11          {
  12   1      TMOD=0x1f;
  13   1      TR1=1;
  14   1      TL1=0x54;
  15   1      TH1=0xd9;
  16   1      ET1=1;
  17   1      EA=1;
  18   1      }
  19          
  20          /****************键盘检测是否按下***********************/
  21          unchar keyin()
  22          {
  23   1      unchar k_1;
  24   1      k_1=(~P1)&0x0f;
  25   1      if(k_1!=0)
  26   1      keystu=keystu<<1;
  27   1      return(keystu);
  28   1      }
  29          
  30          /****************键盘扫描哪个键按下**********************/
  31          unchar keyscan()
  32          {
  33   1      unchar i,l,r,num;       //l记录行数，r记录列数，num记录哪个键
  34   1      for(i=0;i<4;i++)
  35   1      {
  36   2      P1=sweep[i];
  37   2      num=(~P1)&0x0f;
  38   2      if(num!=0)
  39   2      {
  40   3      r=i;   //记录当前列数
  41   3      switch(num)
  42   3      {
  43   4      case 0x01:l=0;break;
  44   4      case 0x02:l=1;break;
  45   4      case 0x04:l=2;break;
  46   4      case 0x08:l=3;break;
  47   4      default:break;
  48   4      num=4*r+l;}
  49   3      return(num);
  50   3      }}}
  51          
  52          /***************中断入口***************/
  53          void timer1() interrupt 3
  54          {
  55   1      unchar t;
C51 COMPILER V8.02   KEYCHECK                                                              08/19/2008 10:15:47 PAGE 2   

  56   1      TL1=0xd9;
  57   1      TH1=0x54;
  58   1      TF1=0;
  59   1      t10ms=1;
  60   1      t++;
  61   1      if(t==100)
  62   1      {
  63   2      t=0;
  64   2      t1s=1;
  65   2      }
  66   1      }
  67          
  68          /**************主函数***********************/
  69          void main()
  70          {
  71   1      unchar k,keynum;
  72   1      P1=0x0f;
  73   1      initt1();
  74   1      while(1)
  75   1      {if(t1s)
  76   2      {
  77   3      t1s=0;
  78   3      P2=~P2;
  79   3      }
  80   2      if(t10ms)
  81   2      {
  82   3      t10ms=0;
  83   3      k=keyin();
  84   3      if(k<=0xfa||k==0xfc)
  85   3      {
  86   4      keystu=0xff;
  87   4      keynum=keyscan();
  88   4      switch(keynum)
  89   4      {
  90   5      case 0:P0=seg[0] ;break;
  91   5      case 1:P0=seg[1] ;break;
  92   5      case 2:P0=seg[2] ;break;
  93   5      case 3:P0=seg[3] ;break;
  94   5      case 4:P0=seg[4] ;break;
  95   5      case 5:P0=seg[5] ;break;
  96   5      case 6:P0=seg[6] ;break;
  97   5      case 7:P0=seg[7] ;break;
  98   5      case 8:P0=seg[8] ;break;
  99   5      case 9:P0=seg[9] ;break;
 100   5      case 10:P0=seg[10] ;break;
 101   5      case 11:P0=seg[11];break;
 102   5      case 12:P0=seg[12] ;break;
 103   5      case 13:P0=seg[13] ;break;
 104   5      case 14:P0=seg[14] ;break;
 105   5      case 15:P0=seg[15] ;break;
 106   5      default:break;}}}}}
 107          
 108            


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    300    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =     21       2
   IDATA SIZE       =   ----    ----
C51 COMPILER V8.02   KEYCHECK                                                              08/19/2008 10:15:47 PAGE 3   

   BIT SIZE         =      2    ----
END OF MODULE INFORMATION.


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