timer.lst

51开发板的源程序

C51 COMPILER V7.06   TIMER                                                                 12/18/2007 11:18:07 PAGE 1   


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

stmt level    source

   1          #include "c51base.h" 
   2          
   3          
   4          static uint time_20ms;
   5          
   6          
   7          static bit is_key;
   8          static uchar key_value;
   9          
  10          void TimerInit()
  11          {
  12   1              TH0 = 0X88;
  13   1              TL0 = 0X00;
  14   1              TMOD = 0X21;
  15   1              TR0 = 1;
  16   1              ET0 = 1;
  17   1      }
  18          
  19          sbit KEY_1 = P2^3;
  20          sbit KEY_2 = P2^2;
  21          sbit KEY_3 = P2^1;
  22          sbit KEY_4 = P2^0;
  23          
  24          
  25          void TimeInter() interrupt 1
  26          {
  27   1              static uchar last_value;
  28   1              static uint back_time;
  29   1              uchar temp;
  30   1              TH0 =0x88;
  31   1              TL0 =0x00;
  32   1              time_20ms++;
  33   1              if(time_20ms - back_time>=1000)
  34   1                              BACK_LIGHT = 1;
  35   1      
  36   1              temp=0;
  37   1              KEY_1 = KEY_2 = KEY_3 = KEY_4 = 1;
  38   1              KEY_1 = 0;
  39   1              if(!KEY_3)
  40   1                      temp = temp+1;
  41   1              temp<<=1;
  42   1              if(!KEY_4)
  43   1                      temp = temp+1;
  44   1              KEY_2 = 0;
  45   1              temp<<=1;
  46   1              if(!KEY_3)
  47   1                      temp = temp+1;
  48   1              temp<<=1;
  49   1              if(!KEY_4)
  50   1                      temp = temp+1;
  51   1              temp<<=1;
  52   1              if(temp!=0 && last_value != temp)
  53   1              {
  54   2                      key_value = temp;
  55   2                      is_key = 1;
C51 COMPILER V7.06   TIMER                                                                 12/18/2007 11:18:07 PAGE 2   

  56   2                      BACK_LIGHT = 0;
  57   2                      back_time = time_20ms;
  58   2              }
  59   1              last_value = temp;
  60   1      }
  61          
  62          bit IsKeyCheck(void)
  63          {               
  64   1              return is_key;
  65   1      }
  66          
  67          uchar ReadKey(void)
  68          {
  69   1              uchar temp;
  70   1              is_key = 0;     
  71   1              switch(key_value)
  72   1              {
  73   2                      case 2:temp = 'd';
  74   2                      break;
  75   2                      case 4:temp = 'x';
  76   2                      break;
  77   2                      case 20:temp = 'e';
  78   2                      break;
  79   2                      case 10:temp = 'u';
  80   2                      break;
  81   2                      default:
  82   2                      break;
  83   2              }
  84   1              return temp;
  85   1      }
  86          
  87          uchar WaitKey(uint time_out)
  88          {
  89   1              uchar i;
  90   1              time_out = time_out*6;
  91   1              while(time_out--)
  92   1              {
  93   2                      WDTReset_SM89516();
  94   2                      for(i=0;i<=112;i++)
  95   2                              ;
  96   2                      if(IsKeyCheck())
  97   2                              return ReadKey();
  98   2              }
  99   1              return 0xff;
 100   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    220    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      6       2
   IDATA SIZE       =   ----    ----
   BIT SIZE         =      1    ----
END OF MODULE INFORMATION.


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