23a0823b84
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@11855 a1c6a512-1295-4272-9138-f99709370657
144 lines
3.6 KiB
C
144 lines
3.6 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) 2006 by Linus Nielsen Feltzing
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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 <stdlib.h>
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#include "config.h"
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#include "cpu.h"
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#include "system.h"
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#include "button.h"
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#include "kernel.h"
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#include "backlight.h"
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#include "adc.h"
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#include "system.h"
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static bool headphones_detect;
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static int const remote_buttons[] =
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{
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BUTTON_NONE, /* Headphones connected - remote disconnected */
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BUTTON_SELECT,
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BUTTON_MENU, /* could be changed to BUTTON_A */
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BUTTON_LEFT,
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BUTTON_RIGHT,
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BUTTON_UP, /* could be changed to BUTTON_VOL_UP */
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BUTTON_DOWN, /* could be changed to BUTTON_VOL_DOWN */
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BUTTON_NONE, /* Remote control attached - no buttons pressed */
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BUTTON_NONE, /* Nothing in the headphone socket */
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};
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void button_init_device(void)
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{
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/* Power, Remote Play & Hold switch */
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}
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inline bool button_hold(void)
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{
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return (GPGDAT & (1 << 15));
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}
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int button_read_device(void)
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{
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int touchpad;
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int buttons;
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static int lastbutton;
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unsigned short remote_adc;
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int btn = BUTTON_NONE;
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/* See header for ADC values when remote control buttons are pressed */
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/* Only one button can be sensed at a time on the remote. */
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/* Need to filter the remote button because the ADC is so fast */
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remote_adc = adc_read(ADC_HPREMOTE);
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btn = remote_buttons[(remote_adc + 64) / 128];
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if (btn != lastbutton)
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{
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/* if the buttons dont agree twice in a row, then its none */
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lastbutton = btn;
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btn = BUTTON_NONE;
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}
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/* Check for hold first - exit if asserted with no button pressed */
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if (button_hold())
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return btn;
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/* the side buttons - Check before doing all of the work on each bit */
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buttons = GPGDAT & 0x1F;
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if (buttons)
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{
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if (buttons & (1 << 0))
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btn |= BUTTON_POWER;
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if (buttons & (1 << 1))
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btn |= BUTTON_MENU;
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if (buttons & (1 << 2))
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btn |= BUTTON_VOL_UP;
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if (buttons & (1 << 3))
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btn |= BUTTON_VOL_DOWN;
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if (buttons & (1 << 4))
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btn |= BUTTON_A;
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}
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/* the touchpad */
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touchpad = GPJDAT & 0x10C9;
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if (touchpad)
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{
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if (touchpad & (1 << 0))
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btn |= BUTTON_UP;
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if (touchpad & (1 << 12))
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btn |= BUTTON_RIGHT;
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if (touchpad & (1 << 6))
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btn |= BUTTON_DOWN;
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if (touchpad & (1 << 7))
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btn |= BUTTON_LEFT;
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if (touchpad & (1 << 3))
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btn |= BUTTON_SELECT;
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}
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return btn;
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}
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bool headphones_inserted(void)
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{
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unsigned short remote_adc = adc_read(ADC_HPREMOTE);
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if (remote_adc != ADC_READ_ERROR)
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{
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/* If there is nothing in the headphone socket, the ADC reads high */
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if (remote_adc < 940)
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headphones_detect = true;
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else
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headphones_detect = false;
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}
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return headphones_detect;
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}
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