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https://github.com/netfun2000/lcd4linux.git
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6696076f07
LCD-Linux updated to 0.9.0 git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@585 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
91 lines
3.0 KiB
C
91 lines
3.0 KiB
C
/* hd44780.h
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*
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* $Id: drv_LCDLinux.h,v 1.6 2005/08/27 07:02:25 reinelt Exp $
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*
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* LCD-Linux:
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* Driver for HD44780 compatible displays connected to the parallel port.
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*
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* HD44780 header file.
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*
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* Copyright (C) 2004, 2005 Mattia Jona-Lasinio (mjona@users.sourceforge.net)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#ifndef HD44780_H
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#define HD44780_H
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#include <linux/lcd-linux.h>
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#define HD44780_VERSION "0.9.0" /* Version number */
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#define HD44780_STRING "hd44780"
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/* IOCTLs */
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#include <asm/ioctl.h>
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#define IOCTL_RAW_CMD _IOW(LCD_MAJOR, 0, unsigned char *)
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/* flags */
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#define HD44780_CHECK_BF 0x0001 /* Do busy flag checking */
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#define HD44780_4BITS_BUS 0x0002 /* Set the bus length to 4 bits */
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#define HD44780_5X10_FONT 0x0004 /* Use 5x10 dots fonts */
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/*** HD44780 Command Set ***/
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/* Clear Display*/
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#define CLR_DISP 0x01 /* Clear entire display; cursor at row 0, column 0 */
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/* Return Home */
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#define RET_HOME 0x02 /* Cursor at row 0, column 0; display content doesn't change */
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/* Entry Mode Set */
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#define DISP_SHIFT_ON 0x05 /* Shift display, not cursor after data write */
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#define DISP_SHIFT_OFF 0x04 /* Shift cursor, not display after data write */
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#define CURS_INC 0x06 /* Shift on the right after data read/write */
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#define CURS_DEC 0x04 /* Shift on the left after data read/write */
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/* Display on/off Control */
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#define BLINK_ON 0x09 /* Cursor blinking on */
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#define BLINK_OFF 0x08 /* Cursor blinking off */
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#define CURS_ON 0x0a /* Display Cursor */
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#define CURS_OFF 0x08 /* Hide Cursor */
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#define DISP_ON 0x0c /* Turn on display updating */
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#define DISP_OFF 0x08 /* Freeze display content */
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/* Cursor or Display Shift */
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#define SHIFT_RIGHT 0x14 /* Shift on the right */
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#define SHIFT_LEFT 0x10 /* Shift on the left */
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#define SHIFT_DISP 0x18 /* Shift display */
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#define SHIFT_CURS 0x10 /* Shift cursor */
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/* Function Set */
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#define FONT_5X10 0x24 /* Select 5x10 dots font */
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#define FONT_5X8 0x20 /* Select 5x8 dots font */
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#define DISP_2_LINES 0x28 /* Select 2 lines display (only 5x8 font allowed) */
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#define DISP_1_LINE 0x20 /* Select 1 line display */
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#define BUS_8_BITS 0x30 /* Set 8 data bits */
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#define BUS_4_BITS 0x20 /* Set 4 data bits */
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/* Set CGRAM Address */
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#define CGRAM_IO 0x40 /* Access the CGRAM */
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/* Set DDRAM Address */
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#define DDRAM_IO 0x80 /* Access the DDRAM */
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#endif /* HD44780 included */
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