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/*
* Copyright 2002 Sun Microsystems, Inc. All rights reserved.
*
* Use is subject to the GNU Lesser General Public License, Version 2.1,
* February 1999, which is contained in the read-me file named
* "README_GNU_LGPL." This library is free software; you can
* redistribute it and/or modify it under the terms of the GNU
* Lesser General Public License as published by the Free Software
* Foundation; either version 2.1 of the License, or (at your
* option) any later version. This library 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 Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA.
*
* read functions for the lcd. we handle both buttons and
* reading from the panel. */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include "lcdutils.h"
#include "lcd_private.h"
int lcd_getdisplay(void *lcd_private, char **line1, char **line2, int *buttons) {
struct lcd_private *lcd = lcd_private;
if (!lcd || (lcd->fd < 0))
return -1;
ioctl(lcd->fd, LCD_Read, &lcd->display);
if (line1)
*line1 = lcd->display.line1;
if (line2)
*line2 = lcd->display.line2;
if (buttons)
*buttons = lcd->display.buttons;
return 0;
}
int lcd_readbutton(void *lcd_private) {
struct lcd_private *lcd = lcd_private;
if (!lcd || (lcd->fd < 0))
return -1;
ioctl(lcd->fd, BUTTON_Read, &lcd->display);
return lcd->display.buttons;
}
int lcd_getbutton(void *lcd_private) {
struct lcd_private *lcd = lcd_private;
int i;
if (!lcd || (lcd->fd < 0))
return -2;
return read(lcd->fd, &i, 1);
}
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