key.lst

4*4键盘

C51 COMPILER V7.04   KEY                                                                   09/07/2005 22:38:34 PAGE 1   


C51 COMPILER V7.04, COMPILATION OF MODULE KEY
OBJECT MODULE PLACED IN key.OBJ
COMPILER INVOKED BY: C:\KEIL\C51\BIN\C51.EXE key.c BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          #include<AT89X51.h>
   2          void main()
   3          {
   4   1       void flashLed(unsigned char cnt);  //闪烁函数
   5   1       void Delay(unsigned char t);      //延时函数
   6   1       flashLed(2);  //开机复位后,LED先闪两次,表明单片机正常
   7   1       start:
   8   1       while(1)
   9   1       {
  10   2        if(P3_2==0)            //若开关K1按下
  11   2          {Delay(50);           //延时
  12   3         while(P3_2)          //若开关K1抬起,P3_2=1,则往下执行,否则,等待松开
  13   3         {flashLed(1);        //闪烁一次
  14   4         goto start;}}  //跳出去,否则会一直闪烁
  15   2      if(P3_3==0)          //若开关K2被按下
  16   2          {Delay(50);        //延时
  17   3          while(P3_3)           //等待松开
  18   3          {flashLed(2);       //闪烁二次
  19   4           goto start;}}           //跳出去,否则会一直闪烁
  20   2           if(P3_4==0)         //若K3被按下
  21   2             {Delay(50);
  22   3             while(P3_4)       //等待松开
  23   3       {flashLed(3);      //闪烁三次
  24   4              goto start;}}       //跳出去,否则会一直闪烁
  25   2            if(P3_5==0)         //若K4被按下
  26   2             {Delay(50);
  27   3              while(P3_5)         //等待松开
  28   3              {flashLed(4);     //闪烁四次
  29   4              goto start; }} //跳出去,否则会一直闪烁
  30   2           }
  31   1      }
  32          void flashLed(unsigned char cnt) //闪烁子程序
  33          {
  34   1       unsigned char a;
  35   1         for(a=1;a<=cnt;a++)
  36   1         {
  37   2           P1=0x00;
  38   2          Delay(100);
  39   2          P1=0xff;
  40   2          Delay(100);
  41   2         }
  42   1      }
  43          void Delay(unsigned char t)  //延时子程序
  44          {
  45   1       unsigned char i,j,k;
  46   1         for(i=0;i<=t;i++)
  47   1         for(j=0;j<=10;j++)
  48   1          for(k=0;k<=120;k++)
  49   1         ;
  50   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    127    ----
   CONSTANT SIZE    =   ----    ----
C51 COMPILER V7.04   KEY                                                                   09/07/2005 22:38:34 PAGE 2   

   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----       2
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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