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
99 lines
2.6 KiB
C
99 lines
2.6 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2007 by Dave Chapman
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "config.h"
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#include "cpu.h"
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#include "button.h"
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#include "adc.h"
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/*
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Results of button testing (viewing ADC values whilst pressing buttons):
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HOLD: GPIOB & 0x0200 (0=hold active, 0x0200 = hold inactive)
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ADC[1]: (approx values)
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Idle - 0x3ff
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MENU - unknown
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REPEAT/AB - 0x03?
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LEFT - 0x07?-0x08?
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SELECT - 0x0c?
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RIGHT - 0x11?
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PLAY/PAUSE - 0x17?-0x018?
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VOL UP - 0x1e?-0x01f?
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VOL DOWN - 0x26?
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*/
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void button_init_device(void)
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{
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/* Nothing to do */
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}
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int button_read_device(void)
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{
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int btn = BUTTON_NONE;
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int adc;
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/* TODO - determine how to detect BUTTON_MENU - it doesn't appear to
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be connected to a GPIO or to an ADC
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*/
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adc = adc_read(ADC_BUTTONS);
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if (adc < 0x384) {
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if (adc < 0x140) {
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if (adc < 0x96) {
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if (adc < 0x50) {
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btn |= BUTTON_REPEATAB; /* 0x00..0x4f */
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} else {
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btn |= BUTTON_LEFT; /* 0x50..0x95 */
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}
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} else {
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if (adc < 0xe0) {
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btn |= BUTTON_SELECT; /* 0x96..0xdf */
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} else {
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btn |= BUTTON_RIGHT; /* 0xe0..0x13f */
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}
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}
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} else {
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if (adc < 0x208) {
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if (adc < 0x1b0) {
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btn |= BUTTON_PLAYPAUSE; /* 0x140..0x1af */
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} else {
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btn |= BUTTON_VOLUP; /* 0x1b0..0x207 */
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}
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} else {
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btn |= BUTTON_VOLDOWN; /* 0x209..0x383 */
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}
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}
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}
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return btn;
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}
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bool button_hold(void)
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{
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return (GPIOB & 0x200)?false:true;
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}
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