main.lst

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C51 COMPILER V8.02   MAIN                                                                  02/12/2011 09:50:31 PAGE 1   


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

line level    source

   1          /*
   2           * 1602
   3          */
   4          
   5          #include <reg52.h>
   6          
   7          typedef unsigned char uint8;
   8          
   9          sbit RS = P1^0 ;
  10          sbit RW = P1^1 ;
  11          sbit EN = P1^5 ;
  12          sbit BUSY = P0^7;
  13          
  14          
  15          /**
  16           * 等待繁忙标志
  17          */
  18          void wait(void)
  19          {
  20   1              P0 = 0xFF;
  21   1              
  22   1              do
  23   1              {
  24   2                      RS = 0;
  25   2                      RW = 1;
  26   2                      EN = 0;
  27   2                      EN = 1;
  28   2              }while (BUSY == 1);
  29   1              EN = 0;
  30   1      }
  31          
  32          /**
  33           * 写数据
  34          */
  35          void w_dat(uint8 dat)
  36          {
  37   1              wait();
  38   1              EN = 0;
  39   1              P0 = dat;
  40   1              RS = 1;
  41   1              RW = 0;
  42   1              EN = 1;
  43   1              EN = 0;
  44   1      }
  45          
  46          /**
  47           * 写命令
  48          */
  49          void w_cmd(uint8 cmd)
  50          {
  51   1              wait();
  52   1              EN = 0;
  53   1              P0 = cmd;
  54   1              RS = 0;
  55   1              RW = 0;
C51 COMPILER V8.02   MAIN                                                                  02/12/2011 09:50:31 PAGE 2   

  56   1              EN = 1;
  57   1              EN = 0;
  58   1      }
  59          
  60          /**
  61           * 初始化1602
  62          */
  63          void Init_LCD1602(void)
  64          {
  65   1              w_cmd(0x38);  // 16*2显示，5*7点阵，8位数据接口
  66   1              w_cmd(0x0C);  // 显示器开、光标开、光标允许闪烁
  67   1              w_cmd(0x06);  // 文字不动，光标自动右移
  68   1              w_cmd(0x01);  // 清屏
  69   1      }
  70          
  71          
  72          main()
  73          {
  74   1      
  75   1              Init_LCD1602();
  76   1              
  77   1              w_cmd(0x80);
  78   1              w_dat('A');
  79   1              
  80   1              while (1);
  81   1      } 
  82          
  83          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     84    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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