cs19-2.lst

《手把手教你学单片机的C程序设计》及实验程序

C51 COMPILER V7.06   CS19_2                                                                02/18/2007 18:36:45 PAGE 1   


C51 COMPILER V7.06, COMPILATION OF MODULE CS19_2
OBJECT MODULE PLACED IN CS19-2.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE CS19-2.c BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          #include<REG51.H>
   2          #define uchar unsigned char
   3          #define uint unsigned int
   4          uchar code DIS_SEG7[16]={0x3f,0x06,0x5b,0x4f,0x66,
   5                          0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
   6          uchar code DIS_BIT[8]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
   7          uchar code SKEY[16]={10,11,12,13,3,6,9,14,2,5,8,0,1,4,7,15};
   8          uchar code act[4]={0xfe,0xfd,0xfb,0xf7};
   9          //========================
  10          void delay(uint k)
  11          {
  12   1      uint data i,j;
  13   1      for(i=0;i<k;i++){
  14   2      for(j=0;j<121;j++)
  15   2      {;}}
  16   1      }
  17          //===========================
  18          char scan_key(void)
  19          {
  20   1      uchar i,j,in,ini,inj;
  21   1      bit find=0;
  22   1              for(i=0;i<4;i++)
  23   1              {
  24   2              P1=act[i];
  25   2              delay(10);
  26   2              in=P1;
  27   2              in=in>>4;
  28   2              in=in|0xf0;
  29   2                      for(j=0;j<4;j++)
  30   2                      {
  31   3                        if(act[j]==in)
  32   3                        {find=1;
  33   4                        inj=j;ini=i;
  34   4                        }
  35   3                      }
  36   2              }
  37   1              if(find==0)return -1;
  38   1              return (ini*4+inj);
  39   1      }
  40          //============================
  41          void main(void)
  42          {       char c;
  43   1              uchar key_value;
  44   1              while(1)
  45   1              {
  46   2                      c=scan_key();
  47   2                      if(c!=-1)key_value=SKEY[c];
  48   2                      P0=DIS_SEG7[key_value];
  49   2                      P2=DIS_BIT[0];
  50   2                      delay(2);
  51   2              }
  52   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
C51 COMPILER V7.06   CS19_2                                                                02/18/2007 18:36:45 PAGE 2   

   CODE SIZE        =    148    ----
   CONSTANT SIZE    =     44    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----       3
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----       1
END OF MODULE INFORMATION.


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