99 lines
2.6 KiB
C
99 lines
2.6 KiB
C
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/***************************************************************************
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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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* 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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/*
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Results of button testing:
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HOLD: GPIOA & 0x0002 (0=pressed, 0x0002 = released)
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POWER: GPIOA & 0x8000 (0=pressed, 0x8000 = released)
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ADC[0]: (approx values)
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RIGHT - 0x37
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LEFT - 0x7f
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JOYSTICK PRESS - 0xc7
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UP - 0x11e
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DOWN - 0x184
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MODE - 0x1f0/0x1ff
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PRESET - 0x268/0x269
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REC - 0x2dd
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Values of ADC[0] tested in OF disassembly: 0x50, 0x96, 0xdc, 0x208, 0x384
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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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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_RIGHT; /* 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_UP; /* 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_DOWN; /* 0x140..0x1af */
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} else {
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btn |= BUTTON_MODE; /* 0x1b0..0x207 */
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}
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} else {
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if (adc < 0x290) {
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btn |= BUTTON_PRESET; /* 0x208..0x28f */
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} else {
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btn |= BUTTON_REC; /* 0x290..0x383 */
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}
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}
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}
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}
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if (!(GPIOA & 0x2))
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btn |= BUTTON_HOLD;
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if (!(GPIOA & 0x8000))
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btn |= BUTTON_POWERPLAY;
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return btn;
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}
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