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1602字符液晶滚动演示程序.zip

C51 COMPILER V7.50   LCD1602                                                               04/27/2010 22:33:33 PAGE 1   


C51 COMPILER V7.50, COMPILATION OF MODULE LCD1602
OBJECT MODULE PLACED IN LCD1602.OBJ
COMPILER INVOKED BY: d:\Keil\C51\BIN\C51.EXE LCD1602.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          /***************   writer:shopping.w   ******************/
   2          #include <reg52.h>
   3          #include <intrins.h>
   4          #define uchar unsigned char
   5          #define uint unsigned int
   6          
   7          sbit RS = P2^0;
   8          sbit RW = P2^1;
   9          sbit EN = P2^2;
  10          
  11          void Delayms(uint ms)
  12          {
  13   1              uchar i;
  14   1              while(ms--)
  15   1              {
  16   2                      for(i=0;i<120;i++);
  17   2              }
  18   1      }
  19          
  20          uchar Busy_Check()
  21          {
  22   1              uchar LCD_Status;
  23   1              RS = 0;
  24   1              RW = 1;
  25   1              EN = 1;
  26   1              Delayms(1);
  27   1              LCD_Status = P0;
  28   1              EN = 0;
  29   1              return LCD_Status;
  30   1      }
  31          
  32          void Write_LCD_Command(uchar cmd)
  33          {
  34   1              while((Busy_Check()&0x80)==0x80);
  35   1              RS = 0;
  36   1              RW = 0;
  37   1              EN = 0;
  38   1              P0 = cmd;
  39   1              EN = 1;
  40   1              Delayms(1);
  41   1              EN = 0;
  42   1      }
  43          
  44          void Write_LCD_Data(uchar dat)
  45          {
  46   1              while((Busy_Check()&0x80)==0x80);
  47   1              RS = 1;
  48   1              RW = 0;
  49   1              EN = 0;
  50   1              P0 = dat;
  51   1              EN = 1;
  52   1              Delayms(1);
  53   1              EN = 0;
  54   1      }
  55          
C51 COMPILER V7.50   LCD1602                                                               04/27/2010 22:33:33 PAGE 2   

  56          void Initialize_LCD()
  57          {
  58   1              Write_LCD_Command(0x38);
  59   1              Delayms(1);     
  60   1              Write_LCD_Command(0x01);
  61   1              Delayms(1);     
  62   1              Write_LCD_Command(0x06);
  63   1              Delayms(1);     
  64   1              Write_LCD_Command(0x0c);
  65   1              Delayms(1);     
  66   1      }
  67          
  68          void ShowString(uchar x,uchar y,uchar *str)
  69          {
  70   1              uchar i = 0;
  71   1              if(y == 0)
  72   1                      Write_LCD_Command(0x80 | x);
  73   1              if(y == 1)
  74   1                      Write_LCD_Command(0xc0 | x);
  75   1              for(i=0;i<16;i++)
  76   1              {
  77   2                      Write_LCD_Data(str[i]); 
  78   2              }
  79   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    186    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----       6
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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