lcd.lst

嵌入式C语言程序设计教材的程序例子代码

C51 COMPILER V7.50   LCD                                                                   09/15/2005 10:08:29 PAGE 1   


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

line level    source

   1          #include <REGX51.H>
   2          #include <lcd.h>
   3          
   4          char code int2charLCD[]="0123456789";
   5                  
   6          void write_LCD_command(unsigned command)
   7          {
   8   1              rw=WRITE;
   9   1              rs=COMMAND;
  10   1              enable=ENABLE;
  11   1              P1=command;
  12   1              delay100us(20);
  13   1              enable=DISABLE;
  14   1              rw=1;
  15   1      }
  16          void write_LCD_data(unsigned LCDdata)
  17          {
  18   1              rw=WRITE;
  19   1              rs=DATA;
  20   1              enable=ENABLE;
  21   1              P1=LCDdata;
  22   1              delay100us(20);
  23   1              enable=DISABLE;
  24   1              rw=1;
  25   1      }
  26          void init_LCD(void)
  27          {
  28   1              write_LCD_command(TwoLine_8bit);// 0x38         
  29   1              write_LCD_command(CURSOR_OFF);  // 0x0C
  30   1              write_LCD_command(CURSOR_RIGHT);// 0x06
  31   1      }
  32          void clear_LCD()
  33          {
  34   1              write_LCD_command(CLEAR);       
  35   1              write_LCD_command(CURSOR_HOME); 
  36   1      }
  37          void display_LCD_string(char *p)
  38          {
  39   1              while(*p)
  40   1              {
  41   2                      write_LCD_data(*p);
  42   2                      p++;
  43   2              }
  44   1      }
  45          void display_LCD_number(char number)
  46          {
  47   1              unsigned char x,y;
  48   1              x=number/10;
  49   1              y=number-10*x;
  50   1              write_LCD_data(int2charLCD[x]);
  51   1              write_LCD_data(int2charLCD[y]);
  52   1      }
  53          void gotoxy(unsigned x,unsigned y)
  54          {
  55   1              if(x==1)  
C51 COMPILER V7.50   LCD                                                                   09/15/2005 10:08:29 PAGE 2   

  56   1                      write_LCD_command(GOTO_LINE_1+y);
  57   1              else
  58   1              write_LCD_command(GOTO_LINE_2+y);
  59   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    188    ----
   CONSTANT SIZE    =     11    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----       6
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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