970cfee394
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17115 a1c6a512-1295-4272-9138-f99709370657
79 lines
2.2 KiB
C
79 lines
2.2 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) 2008 by Rob Purchase
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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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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static enum touchpad_mode current_mode = TOUCHPAD_POINT;
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void touchpad_set_mode(enum touchpad_mode mode)
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{
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current_mode = mode;
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}
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enum touchpad_mode touchpad_get_mode(void)
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{
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return current_mode;
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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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bool button_hold(void)
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{
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return (GPIOA & 0x8) ? false : true;
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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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if (GPIOB & 0x4)
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{
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adc = adc_read(ADC_BUTTONS);
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/* The following contains some arbitrary, but working, guesswork */
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if (adc < 0x038) {
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btn |= (BUTTON_MINUS | BUTTON_PLUS | BUTTON_MENU);
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} else if (adc < 0x048) {
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btn |= (BUTTON_MINUS | BUTTON_PLUS);
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} else if (adc < 0x058) {
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btn |= (BUTTON_PLUS | BUTTON_MENU);
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} else if (adc < 0x070) {
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btn |= BUTTON_PLUS;
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} else if (adc < 0x090) {
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btn |= (BUTTON_MINUS | BUTTON_MENU);
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} else if (adc < 0x150) {
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btn |= BUTTON_MINUS;
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} else if (adc < 0x200) {
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btn |= BUTTON_MENU;
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}
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}
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/* TODO: Read 'fake' buttons based on touchscreen quadrants.
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Question: How can I read from the PCF chip (I2C) in a tick task? */
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if (!(GPIOA & 0x4))
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btn |= BUTTON_POWER;
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return btn;
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}
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