led.lst

我自己整理的单片机4*4键盘最简扫描算法

C51 COMPILER V7.00  LED                                                                    05/16/2007 10:42:12 PAGE 1   


C51 COMPILER V7.00, COMPILATION OF MODULE LED
OBJECT MODULE PLACED IN led.OBJ
COMPILER INVOKED BY: D:\Program Files\keil中文版\Keil\C51\BIN\C51.EXE led.c BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          #include <reg52.h>
   2          #include "type.h"
   3          #include "led.h"
   4          
   5          UCHAR vBuffer[MAX_LED];
   6          UCHAR code LED_Table[]={
   7          //0   1   2    3    4    5    6    7    8    9   
   8          0X3F,0X6,0X5B,0X4F,0X66,0X6D,0X7D,0X7,0X7F,0X6F,
   9          //a   b    c    d    e    f    null
  10          0X77,0X7C,0X39,0X5E,0X79,0X71,0xff};
  11          
  12          
  13          void InitLED(void)
  14          {
  15   1              UCHAR i;
  16   1              for ( i = 0 ; i < MAX_LED ; i ++)
  17   1              {
  18   2                      vBuffer[i] = LED_NULL;
  19   2              }
  20   1      }
  21          
  22          void SetLED(UCHAR idx , UCHAR d)
  23          {
  24   1              if ( idx >= MAX_LED ) idx = 0;
  25   1              vBuffer[idx] = d;
  26   1      }
  27          
  28          void ShowByte(UCHAR idx , UCHAR d)
  29          {
  30   1              if ( idx >= MAX_LED ) idx = 0;
  31   1              vBuffer[idx] = d&0x0f;
  32   1              idx ++;
  33   1              if ( idx >= MAX_LED ) idx = 0;
  34   1              vBuffer[idx] = d>>4;
  35   1      }
  36          
  37          
  38          void LED_Server(void)
  39          {
  40   1              static UCHAR idx;
  41   1              UCHAR  rt;
  42   1              idx ++;
  43   1              if ( idx >= MAX_LED ) 
  44   1              {
  45   2                      idx = 0;
  46   2              }
  47   1      
  48   1      #if LED_STYLE == LED_COM_K
  49   1              LED_SEG = 0xff;
  50   1              LED_IDX = ~(1<<idx);
  51   1              rt = vBuffer[MAX_LED - idx - 1];
  52   1              if (rt == LED_NULL ) 
  53   1              {
  54   2                      LED_SEG = 0XFF;
  55   2              }
C51 COMPILER V7.00  LED                                                                    05/16/2007 10:42:12 PAGE 2   

  56   1              else
  57   1              {
  58   2                      LED_SEG = ~(LED_Table[rt]); 
  59   2              } 
  60   1      #endif
  61   1      #if LED_STYLE == LED_COM_A
                      LED_SEG = 0;
                      LED_IDX = ~(1<<idx);
                      rt = vBuffer[MAX_LED - idx - 1];
                      if (rt == LED_NULL ) 
                      {
                              LED_SEG = 0;
                      }
                      else
                      {
                              LED_SEG = (LED_Table[rt]); 
                      }
              #endif
  74   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    122    ----
   CONSTANT SIZE    =     17    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      5    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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