lcdqd.lst

液晶显示器LCD1602的驱动。适合于51单片机系统。

C51 COMPILER V8.02   LCDQD                                                                 10/22/2008 11:10:33 PAGE 1   


C51 COMPILER V8.02, COMPILATION OF MODULE LCDQD
OBJECT MODULE PLACED IN LCDQD.OBJ
COMPILER INVOKED BY: D:\Program Files\keil\C51\BIN\C51.EXE LCDQD.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include <AT89X51.h>
   2          #define Data P0
   3          
   4          sbit RS=P1^7;
   5          sbit RW=P1^6;
   6          sbit E=P2^6;
   7          
   8          void delay(unsigned int k) 
   9          { 
  10   1        unsigned int i,j; 
  11   1        for(i=k;i>0;i--) 
  12   1        for(j=50;j>0;j--) ; 
  13   1      }
  14          
  15          unsigned char ReadStatus(void)
  16          {
  17   1        Data = 0xFF;
  18   1        RS = 0;
  19   1        RW = 1;   
  20   1        E = 1;
  21   1        while (Data & 0x80);
  22   1        return(Data);
  23   1        delay(2);
  24   1        E = 0;
  25   1      }
  26          
  27          void wr_com(unsigned char com)
  28          {
  29   1        ReadStatus();
  30   1        Data=com;
  31   1        RS=0;
  32   1        RW=0;
  33   1        E=1;
  34   1        delay(2);
  35   1        E = 0;
  36   1       }
  37          
  38          void wr_dat(unsigned char dat)
  39          {
  40   1        ReadStatus();
  41   1        Data = dat;
  42   1        RS = 1;
  43   1        RW = 0;
  44   1        E = 1; 
  45   1        delay(2);
  46   1        E = 0;
  47   1      }
  48          
  49          void LCD_Init(void)
  50          {
  51   1        Data =0x0;
  52   1        wr_com(0x38);
  53   1        delay(5);
  54   1        wr_com(0x38);
  55   1        delay(5);
C51 COMPILER V8.02   LCDQD                                                                 10/22/2008 11:10:33 PAGE 2   

  56   1        wr_com(0x38);
  57   1        delay(5);
  58   1        wr_com(0x38);
  59   1        wr_com(0x08);
  60   1        wr_com(0x01);
  61   1        wr_com(0x06);
  62   1        wr_com(0x0C);
  63   1      }
  64          
  65          void GotoXY(unsigned char x,unsigned char y)
  66          {
  67   1        x&=0x01;
  68   1        y&=0x0F;
  69   1        y|=(x==0)?0x80:0xC0;
  70   1        wr_com(y);
  71   1        do{
  72   2            y=ReadStatus();
  73   2                }while((y&0x80)==0x80);
  74   1         }
  75          
  76          void disp(unsigned char x,unsigned char y,unsigned char _char)
  77          {
  78   1        GotoXY(x,y);
  79   1        wr_dat(_char);
  80   1        }
  81          
  82          void main(void)
  83          { LCD_Init();
  84   1        while(1)
  85   1       {disp(0,0,'6');
  86   2        disp(1,7,'8');}
  87   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    202    ----
   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)