2acc0ac542
later. We still need to hunt down snippets used that are not. 1324 modified files... http://www.rockbox.org/mail/archive/rockbox-dev-archive-2008-06/0060.shtml git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17847 a1c6a512-1295-4272-9138-f99709370657
67 lines
2 KiB
C
67 lines
2 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
|
* \/ \/ \/ \/ \/
|
|
* $Id$
|
|
*
|
|
* Copyright (C) 2006 by Jens Arnold
|
|
*
|
|
* 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
|
* KIND, either express or implied.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#include "config.h"
|
|
#include "system.h"
|
|
#include "button.h"
|
|
#include "backlight.h"
|
|
#include "adc.h"
|
|
|
|
/*
|
|
Ondio hardware button hookup
|
|
============================
|
|
|
|
LEFT, RIGHT, UP, DOWN: connected to AN4 through a resistor network
|
|
|
|
The voltage on AN4 depends on which keys (or key combo) is pressed
|
|
|
|
OPTION: AN2, high active (assigned as MENU)
|
|
ON/OFF: AN3, low active (assigned as OFF)
|
|
*/
|
|
|
|
int button_read_device(void)
|
|
{
|
|
int btn = BUTTON_NONE;
|
|
int data;
|
|
|
|
/* Check the 4 direction keys */
|
|
data = adc_read(ADC_BUTTON_ROW1);
|
|
if (data >= 165)
|
|
{
|
|
if (data >= 585)
|
|
if (data >= 755)
|
|
btn = BUTTON_LEFT;
|
|
else
|
|
btn = BUTTON_RIGHT;
|
|
else
|
|
if (data >= 415)
|
|
btn = BUTTON_UP;
|
|
else
|
|
btn = BUTTON_DOWN;
|
|
}
|
|
|
|
if(adc_read(ADC_BUTTON_OPTION) > 0x200) /* active high */
|
|
btn |= BUTTON_MENU;
|
|
if(adc_read(ADC_BUTTON_ONOFF) < 0x120) /* active low */
|
|
btn |= BUTTON_OFF;
|
|
|
|
return btn;
|
|
}
|