init_lcd.lst

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C51 COMPILER V6.12  INIT_LCD                                                               07/06/2003 16:32:58 PAGE 1   


C51 COMPILER V6.12, COMPILATION OF MODULE INIT_LCD
OBJECT MODULE PLACED IN init_lcd.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE init_lcd.c DB OE

stmt level    source

   1          /*=========================================================================================
   2                               INITLCD RUTINE
   3          ===========================================================================================
   4          AHTH: GDY
   5          DATE:
   6          COMMENT: 
   7          ===========================================================================================*/
   8          /*--------------------------------------INCLUDE--------------------------------------------*/
   9          #include <c8051f020.h>
  10          /*---------------------------------------FUCTION DECLARING---------------------------------*/
  11          extern void set_xy(unsigned char x,unsigned char y);
  12          extern void delay(int t);
  13          unsigned char read_status();
  14          unsigned char wcode(unsigned char c);
  15          unsigned char wdata(unsigned char d);
  16          /*---------------------------------------16BIT SFR DEFINE----------------------------------*/
  17          sbit DINLCD=P1^0;
  18          sbit RWLCD=P3^7;
  19          sbit ESIG=P1^1;
  20          /*---------------------------------------GLOBLE DEFINE OR DECLARING------------------------*/
  21          extern unsigned char code zk[];
  22          unsigned char read_status()
  23          	{
  24   1      	unsigned char status;
  25   1      	RWLCD=1;
  26   1      //	CSLCD=0;
  27   1      	DINLCD=0;
  28   1      	ESIG=1;
  29   1      	status=0;
  30   1      	ESIG=0;
  31   1      	return(status);
  32   1      	}
  33          		
  34          void init_lcd()
  35          	{
  36   1         	unsigned char status;
  37   1      	status=read_status()&0x80;
  38   1          while(status)
  39   1      	status=read_status()&0x80;
  40   1      	wcode(0x3f);
  41   1      	status=read_status()&0x80;
  42   1          while(status)
  43   1      	status=read_status()&0x80;
  44   1      	wcode(0xc0);
  45   1      	status=read_status()&0x80;
  46   1          while(status)
  47   1      	status=read_status()&0x80;
  48   1      	wcode(0xb8);
  49   1      	status=read_status()&0x80;
  50   1          while(status)
  51   1      	status=read_status()&0x80;
  52   1      	wcode(0x40);
  53   1      	}
  54          /****************************************
  55           THE BLOCK IS FOR WRITTING CODE 
C51 COMPILER V6.12  INIT_LCD                                                               07/06/2003 16:32:58 PAGE 2   

  56           WR=0
  57           DI=0
  58           and when the e's fall ,the code would be latched.
  59          ****************************************/
  60          unsigned char wcode(unsigned char c)
  61          	{
  62   1      	RWLCD=0;
  63   1      	delay(10);
  64   1      //	CSLCD=0;
  65   1      	DINLCD=0;
  66   1      	delay(10);
  67   1      	ESIG=1;
  68   1      	delay(10);
  69   1      	P2=c;
  70   1      	delay(10);
  71   1      	ESIG=0;
  72   1      	delay(10);
  73   1      	return(c);
  74   1      	}
  75          /****************************************
  76          THE BLOCK IS FOR WRITTING DATA 
  77          DI=1
  78          RW=0
  79          when e's falling ,the data would be latched
  80          ****************************************/
  81          
  82          unsigned char wdata(unsigned char d)
  83          	{
  84   1      	DINLCD=1;
  85   1      	delay(10);
  86   1      //	CSLCD=0;
  87   1      	RWLCD=0;
  88   1      	delay(10);
  89   1      	ESIG=1;
  90   1      	delay(10);
  91   1      //	delay(5);
  92   1      	P2=d;
  93   1          delay(100);
  94   1      	ESIG=0;
  95   1      	delay(10);
  96   1      	return(d);
  97   1      	delay(10);
  98   1      	}
  99          /****************************************
 100          THE BLOCK IS FOR CLEARING
 101          ****************************************/
 102          
 103          void clear()
 104          	{
 105   1      	int i=0,x=0;
 106   1      	for(x=0;x<8;x++)
 107   1      		{ 
 108   2      		  set_xy(x,0);
 109   2      		  for(i=0;i<64;i++)
 110   2      		     wdata(0x00);
 111   2         		 }
 112   1      	}
 113          	
 114          


MODULE INFORMATION:   STATIC OVERLAYABLE
C51 COMPILER V6.12  INIT_LCD                                                               07/06/2003 16:32:58 PAGE 3   

   CODE SIZE        =    290    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----       7
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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