lcd.h

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//********************************************************************************************
//
// File : lcd.h implement for 16x2 LCD module
//
//********************************************************************************************
//
// Copyright (C) 2007
//
// This program is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free Software
// Foundation; either version 2 of the License, or (at your option) any later
// version.
// This program is distributed in the hope that it will be useful, but
//
// WITHOUT ANY WARRANTY;
//
// without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
// PURPOSE. See the GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along with
// this program; if not, write to the Free Software Foundation, Inc., 51
// Franklin St, Fifth Floor, Boston, MA 02110, USA
//
// http://www.gnu.de/gpl-ger.html
//
//********************************************************************************************
#define LCD_DATA_PORT		PORTD
#define LCD_DATA_DDR		DDRD
#define LCD_D7				PD7
#define LCD_D6				PD6
#define LCD_D5				PD5
#define LCD_D4				PD4
#define LCD_CONTROL_PORT	PORTB
#define	LCD_CONTROL_DDR		DDRB
#define LCD_RS_PIN			PB0
#define LCD_RW_PIN			PB1
#define LCD_EN_PIN			PB2

#define SET_FUNCTION	0x28	// 8bits, 2lines
#define DISPLAY_ON		0x0C
#define DISPLAY_CLR		0x01
#define ENTRY_MODE		0x06	// Entry = increase
#define RETURN_HOME		0x02
#define CURSOR_BACK		0x10
#define SET_DDRAM		0x80
#define WRITE_DATA		1
#define WRITE_COMMAND	0
#define LCD_EN			0x80
#define LCD_LINE_TWO	0x40
//********************************************************************************************
//
// Prototype function
//
//********************************************************************************************
extern void lcd_init(void);
extern void lcd_gotoxy(unsigned char x,unsigned char y);
extern void lcd_putc(unsigned char c);
extern void lcd_print( unsigned char * ptr );
extern void lcd_print_p( PGM_P ptr );