lcd.c

此驱动程序不同网上流通的驱动,是具有时用性,可移值性相当高,是真正能使用的驱动子程序!程序中宏定义很清楚

/*======================================================================

  File Name     : Lcd.c
  Description   : LCD display driver

  Modified Date : 18/Elenv/06 by GouLiang

=======================================================================*/
#include "lcd.h"

BOOL  DrvFlag;
UCHAR CurPageNo, CurColNo;	//The current page & column (0..3)/(0..121)
UCHAR bPutMode, Display_Font;
UCHAR High8Char;
#ifdef  NOMOVX

void   E1Busy( void )
{
    DI = 0;
	RW = 1;
	OutData = 0xff;
	while(1)
	  {
	    E1 = 1;   _nop_();   _nop_();
	    if( BF_Flag == 0 )   break;	    
	  }
	E1 = 0;	 
}

void  WrDaE1( UCHAR dat )
{    
	DI = 1;
    RW = 0;
	P0 = dat;
	_nop_(); _nop_();
	E1 = 1;
	_nop_(); _nop_();	 
	E1 = 0; 
}
void  WrCoE1( UCHAR dat )
{    
	DI = 0;
    RW = 0;
	OutData = dat; 
	_nop_(); _nop_();
	E1 = 1;
	_nop_(); _nop_();
	E1 = 0; 
}
void   E2Busy( void )
{
    DI = 0;
	RW = 1;
	OutData = 0xff;
	while( 1 )
	  {
	    E2 = 1;   _nop_();  _nop_();
	    if( BF_Flag == 0 )  break;	    
	  }
	E2 = 0;	 
}
void  WrDaE2( UCHAR dat )
{    
	DI = 1;
    RW = 0;
	OutData = dat; 
	_nop_(); _nop_();
	E2 = 1;
	_nop_(); _nop_();
	E2 = 0; 
}
void  WrCoE2( UCHAR dat )
{    
	DI = 0;
    RW = 0;
	OutData = dat;
	_nop_(); _nop_(); 
	E2 = 1;
	_nop_(); _nop_(); 
	E2 = 0; 
}
#else 
#endif 
/*===================================
Name       : WriteData
Parameter  : dat -> LCD 
Return     : None

Description: Send the same data to
             both of the LCD driver
			 Inside  Function   
===================================*/		
void WriteData(UCHAR dat)
{
	if(CurColNo < 122 && CurPageNo<4 )
	{	
		if(GetDriver()==1)
		{		    
		    #ifdef   NOMOVX			  		  	    
		    E2Busy();		  
		    WrDaE2( dat );		  
		    #else 
		    while( LCD_RD_DAT2 &0x80 );
			LCD_WR_DAT2 = dat;
			#endif		  
		}
		else
		{
		    #ifdef   NOMOVX			  		  	    
		    E1Busy();		  
		    WrDaE1( dat );		  
		    #else 
		    while( LCD_RD_DAT1 &0x80 );
			LCD_WR_DAT1 = dat;
			#endif
		}	
		CurColNo++;	 
		SetDriver(); 		
	}
}
/*===================================
Name       : LCD_SetCommCom
Parameter  : cmd -> LCD command
Return     : None

Description: Send the same command to
             both of the LCD driver
			 Inside  Function
===================================*/
void LCD_SetCommCom(UCHAR cmd)
{
    #ifdef   NOMOVX  
	E1Busy();
	WrCoE1( cmd ); 
	E2Busy();
	WrCoE2( cmd );
	#else
    while( LCD_RD_DAT1 &0x80 );
	LCD_WR_CMD1 = cmd;
	while( LCD_RD_DAT2 &0x80 );
	LCD_WR_CMD2 = cmd;
	#endif	
}
/*=============================
Name       : LCD_Init
Parameter  : None
Return     : None
Description: LCD initialization
             Extern  Function
=============================*/
void LCD_Init(void)
{
	LCD_SetCommCom(0xE2);	//RESET
	LCD_SetCommCom(0xAE);	//DISPLAY OFF
	LCD_SetCommCom(0xA4);	//STATIC DRIVE OFF
	LCD_SetCommCom(0xA9);	//SELECT 1/32 DUTY
	LCD_SetCommCom(0xA0);	//ADC SELECT
	LCD_SetCommCom(0xe0);	//Display Of Order
	LCD_SetCommCom(0xEE);	//READ MODIFY WRITE OFF
	LCD_SetCommCom(0xB8);	//SET PAGE ADDRESS
	LCD_SetCommCom(0x00);	//SET COLUMN ADDRESS
	LCD_SetCommCom(0xC0);	//SET DISPLAY START LINE
	LCD_SetCommCom(0xAF);	//DISPLAY ON
}
/*==========================================
Name       : LCD_SetPageCol
Parameter  : PageNo -> Page number(0..3)
             ColNo  -> Column number(0..121)
Return     : None
Description: Set the current position
             Extern  Function
==========================================*/
void LCD_SetPageCol( UCHAR PageNo, UCHAR ColNo )
{
    UCHAR i;
    if( ColNo > 121 ) 	   //Column Control
	 {
	      CurColNo = 122;
		  return;
	 } 	
	else  CurColNo = ColNo;	

	if( PageNo > 3 )	   //Page Control
	 {
	  	  CurPageNo=4;
	      return;
	 }
	else  CurPageNo = PageNo;		  	

	SetDriver();	       //if CurPageNo>60 DrvFlag=1 else DrvFlag=0;
	i = PageNo;
	if( GetDriver() != 1 ) //Test DrvFlag == 1;
	{
	    #ifdef   NOMOVX
		E1Busy();
		WrCoE1( 0xB8 | i );
	    E1Busy();
		WrCoE1( ColNo );
		E2Busy();
		WrCoE2( 0xB8 | i );
	    E2Busy();
		WrCoE2( 0 );
		#else 
	    while( LCD_RD_DAT1 &0x80 ) ;  
		LCD_WR_CMD1 = 0xB8 | i;	        //Write Right  Screen Of Page Address
		while( LCD_RD_DAT1 &0x80 ) ;
		LCD_WR_CMD1 = ColNo;			//Write Right Screen  of Column Address
		while( LCD_RD_DAT2 &0x80 ) ;    
		LCD_WR_CMD2 = 0xB8 | i;       	//Write Left Screen of Page Address
		while( LCD_RD_DAT2 &0x80 ) ;
		LCD_WR_CMD2 = 0;				//Write Left Screen of Column Address
		#endif
	}
	else
	{
	    #ifdef   NOMOVX
		E2Busy();
		WrCoE2( 0xB8 | i );
	    E2Busy();
		WrCoE2( ColNo - 61 );
		#else    
	    while( LCD_RD_DAT2 &0x80 ) ;
		LCD_WR_CMD2 = 0xB8 | i;
		while( LCD_RD_DAT2 &0x80 ) ;
		LCD_WR_CMD2 = ColNo - 61;
		#endif
	}
}
/*============================================
Name       : LCD_ClearPage
Parameter  : PageNo -> Page number(0..3)
             dat -> Need Write data(0 or 0xff)
Return     : None
Description: Set the current position
             Inside Function
=============================================*/
void LCD_ClearPage( UCHAR PageNo, UCHAR dat )
{
	UCHAR i;

	LCD_SetPageCol( PageNo, 0 );
	for( i = 0; i != 122; i++ )
		 WriteData( dat );
}
/*==================================
Name       : LCD_Clear
Parameter  : None
Return     : None
Description: Clear the entire screen
             Inside Function
==================================*/
void LCD_Clear(void)
{
	LCD_ClearPage( 3, 0x00 );
	LCD_ClearPage( 2, 0x00 );
	LCD_ClearPage( 1, 0x00 );
	LCD_ClearPage( 0, 0x00 );
}
/*=======================================
Name       : MediacyDisplay
Parameter  : string -> The pointer of the
                       character string	        
Return     : None
Description: Display a character string  
             Exter  Function           
=======================================*/
UCHAR  MediacyDisplay( UCHAR code* string )
{
      UCHAR TotalColNo = 0;
	  UINT   ui;	  	  	   

	  while(1)
	   {
		   if( ( ( UINT_H( ui ) = *string ) & 0x80 )  
		        && ( ( UINT_L( ui ) = *( string + 1 ) ) & 0x80 ) )
		     {	//汉字区		    		     
		    	TotalColNo += 0x10;
		    	string++;
			    string++;			 	
		     }
		   else
		    {	//ASII 区 
			    if     ( UINT_H(ui) == 0 )								 
				         break;			
			    else if( UINT_H(ui) == '|')  string++;					 		
				else if( UINT_H(ui) == '/')  string++; 
				else if( UINT_H(ui) == '&')  string++;
			    else if( Display_Font == 0 )
				 {
				     TotalColNo += 0x06;
					 string++;
				 }
				else if( Display_Font == 1 ) 
				 {
				     TotalColNo += 0x08;
					 string++;
				 }        			    
		     }
	    }
	if      ( TotalColNo >= 122 )  
	   CurColNo = 0;

    else if	( ( 122 - CurColNo ) <= TotalColNo ) 
	   CurColNo = CurColNo;   
	 
	else  
	   CurColNo = ( 122 - TotalColNo - CurColNo )/2 + CurColNo;
	return( CurColNo );
}
/*=============================================
Name       : Putc
Parameters : c    -> Character	        
Return     : None
Description: Display a character(8x16 Or 8x12)
             Inside Function
=============================================*/
void putchar(UCHAR c)
{
	UCHAR   i;	
	UCHAR  oldPageNo = CurPageNo;
	UCHAR  oldColNo  = CurColNo;
	
		if( High8Char != 0 )
	{
		if( c & 0x80 )
		{
			GetHZCode( ( High8Char << 8 ) | c );
			High8Char = 0;
			return;
		}
		else
		{
			if(c >= 0x20)
			{
				goto  Nex;
			}
		}
	}
	if(c & 0x80 )
	{
		High8Char=c;
		return;
	}		

Nex:if( c == '|')      
	 {
	    bPutMode = 0;
		return;
	 }

    if( c == '/' )
	 {
	    bPutMode = 0xff;
		return;
	 }
	if( c == '&' )
	 {
	    bPutMode =0x80;
		return;
	 }
  
    if( Display_Font == 0 )
	 {
		for( i = 0;	i != 6; i++ )
		     WriteData( ASCII_SMALL[c-0x20][i] ^ bPutMode );
	  }

	else if ( Display_Font == 1 )
	 {
	    for( i = 0; i != 8; i++ )
	         WriteData( ASCII_Lar[c-0x20][i] ^ bPutMode );

	    LCD_SetPageCol( oldPageNo + 1, oldColNo );
	    for( ; i != 16; i++ )
		 {
		     if ( bPutMode != 0x80 )
	              WriteData( ASCII_Lar[c-0x20][i] ^ bPutMode );
			 else WriteData( ASCII_Lar[c-0x20][i] );
		 }

        LCD_SetPageCol( oldPageNo, oldColNo + 8 ); 
	 }		 
}   
/*=============================================
Name       : GetHZCode
Parameter  : hz   -> Chinese character	        
Return     : None

Description: Display a chinese character(16x16)
             Inside  Function
=============================================*/
void GetHZCode( UINT hz )
{
	CPUCHAR pFontMask;
	UINT k,index= CH_DATA;	
	pFontMask = CH_INDEX;

	while(1)
	{
		if(hz ==( k=*CPUINT(pFontMask)))
		{
			pFontMask = index;
			break;
		}

		if( *pFontMask == '\0')
		{
			pFontMask = CH_DATA;
			break;
		}
		pFontMask+=2;
		index+=32;
	}

	if(1)
	{
		UCHAR i;
		UCHAR oldPageNo = CurPageNo;
		UCHAR oldColNo = CurColNo;

		for(i=0; i!=16; i++)
		{
			if( bPutMode != 0x80 )
				WriteData(pFontMask[i]^ bPutMode);
			else
			    WriteData(pFontMask[i]);
		}
		LCD_SetPageCol(oldPageNo+1, oldColNo);

		for(; i != 32; i++ )
		{
			WriteData(pFontMask[i] ^ bPutMode);
		}
		LCD_SetPageCol(oldPageNo, oldColNo+16);
	}
}
/*=======================================
Name       : Puts
Parameter  : string -> The pointer of the
                       character string	         
Return     : None
Description: Display a character string
             Extern  function 
=======================================*/
void  Puts ( UCHAR code* string )
{
	UINT ui;	  	

	LCD_SetPageCol( CurPageNo, MediacyDisplay( string ) );
	while( 1 )
	{		 //把"ui"转换为区位码的形式
		if( ( ( UINT_H( ui ) = *string ) & 0x80 )  
		        && ( ( UINT_L( ui ) = *( string + 1 ) ) & 0x80 ) )
		 {	//汉字区		    		     
			GetHZCode( ui );
			string++;
			string++;			 	
		 }
	    else
		 {	//ASII 区 
			if( UINT_H(ui) == 0 )
				return;
			putchar( UINT_H(ui) );
			string++;
		 }
	}
}
/*=====================================================
Name          : Display Pack Picture Flag
Parameter     : ImageBuff -> First Address 	         
Return        : None
Description   : Display a image
Characteristic: extern
====================================================*/
void PutIcon( UCHAR code *IconAdr )
{
    UCHAR i;
	UCHAR oldPageNo = CurPageNo;	 
	UCHAR oldColNo  = CurColNo;  

	for(i = 0; i != 20; i++ )
	{
		WriteData( *( IconAdr + i ) ^ bPutMode );
	}

	LCD_SetPageCol( oldPageNo + 1, oldColNo );

	for(; i != 40; i++ )
	{
		WriteData( *( IconAdr + i ) ^ bPutMode );
	}
	LCD_SetPageCol( oldPageNo, oldColNo + 20 );
}