lcd.lst

这个是128×64的液晶屏的读写程序

C51 COMPILER V7.50   LCD                                                                   08/22/2007 13:59:36 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          //******************************************************************************
   2          // 128*64 LCD驱动代码                                                               
   3          // 
   4          // 2006-01-25
   5          // www.CPLD-FPGA.NET
   6          //******************************************************************************
   7          
   8          #include "LCD_DEFINE.H"
   9          
  10          
  11          void lcd_init(void)
  12          {
  13   1        LCD_DATA_OUT = 0x00;
  14   1        
  15   1      }
  16          
  17          void write_command(unsigned char command)
  18          {
  19   1      
  20   1        LCD_CS1 =1 ;
  21   1        LCD_CS2 =1 ;
  22   1        LCD_RW = 0 ;
  23   1        LCD_DI = 0 ;
  24   1        LCD_DATA_OUT = command;
  25   1        LCD_EN = 1 ;
  26   1        LCD_EN = 0 ;
  27   1      }
  28          
  29          void write_data( unsigned char LCDdata, unsigned char CS1, unsigned char CS2 )
  30          {
  31   1              
  32   1        if(CS1) 
  33   1              LCD_CS1 =1 ;
  34   1        else 
  35   1              LCD_CS1 =0;
  36   1              
  37   1        if(CS2) 
  38   1              LCD_CS2 =1;
  39   1        else 
  40   1              LCD_CS2 =0;
  41   1              
  42   1        LCD_DI = 1;
  43   1        LCD_RW = 0;
  44   1        LCD_DATA_OUT  = LCDdata;
  45   1        LCD_EN = 1;
  46   1        LCD_EN = 0;
  47   1      }
  48          
  49          void clear_lcd(void)
  50          {
  51   1        unsigned char i,j;
  52   1        for(i=0;i<8;i++)
  53   1        {
  54   2         write_command(SET_X|i);
  55   2         write_command(SET_Y);
C51 COMPILER V7.50   LCD                                                                   08/22/2007 13:59:36 PAGE 2   

  56   2         for(j=0;j<128;j++)
  57   2         {
  58   3          if(j<=63) write_data(0,1,0);
  59   3          else write_data(0,0,1);
  60   3       //   _NOP_();
  61   3         }
  62   2        }
  63   1      }
  64          
  65          
  66          //*chr 显示数据的地址，nRow 在显示屏上第几行，nCol 在显示屏上第几列
  67          //highth  字体的高度，wideth 字体的宽度
  68          //128*64有8行，128列       
  69          void display( unsigned char *chr, unsigned char nRow, unsigned char nCol,
  70                           unsigned char highth,unsigned char wideth )
  71                   
  72          {
  73   1        unsigned char i,tmpCol,tmpRow,h,m;
  74   1        unsigned int j;
  75   1        tmpRow = nRow;
  76   1        m=0;
  77   1        j=0;          //注意此变量的用法
  78   1        for(h=0;h<highth;h=h+8)
  79   1        {
  80   2          
  81   2          write_command(SET_X|tmpRow);
  82   2          tmpCol=nCol;
  83   2          for(i=0;i<wideth;i++)
  84   2          {
  85   3            if(tmpCol<64)
  86   3            {
  87   4                      write_command(SET_Y|tmpCol);
  88   4                      write_data(chr[i+j],1,0);}
  89   3            else 
  90   3            {
  91   4                      write_command(SET_Y|(tmpCol-64));
  92   4                      write_data(chr[i+j],0,1);
  93   4                }
  94   3              
  95   3              tmpCol++;
  96   3          }
  97   2          m++;
  98   2          j=m*wideth;
  99   2          tmpRow++;
 100   2        }
 101   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    251    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----      13
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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