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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2006 by Linus Nielsen Feltzing
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include <stdlib.h>
#include "config.h"
#include "cpu.h"
#include "system.h"
#include "button.h"
#include "kernel.h"
#include "backlight.h"
#include "adc.h"
#include "system.h"
static bool headphones_detect;
static int const remote_buttons[] =
{
BUTTON_NONE, /* Headphones connected - remote disconnected */
BUTTON_SELECT,
BUTTON_MENU, /* could be changed to BUTTON_A */
BUTTON_LEFT,
BUTTON_RIGHT,
BUTTON_UP, /* could be changed to BUTTON_VOL_UP */
BUTTON_DOWN, /* could be changed to BUTTON_VOL_DOWN */
BUTTON_NONE, /* Remote control attached - no buttons pressed */
BUTTON_NONE, /* Nothing in the headphone socket */
};
void button_init_device(void)
{
/* Power, Remote Play & Hold switch */
}
inline bool button_hold(void)
{
return (GPGDAT & (1 << 15));
}
int button_read_device(void)
{
int touchpad;
int buttons;
static int lastbutton;
unsigned short remote_adc;
int btn = BUTTON_NONE;
/* See header for ADC values when remote control buttons are pressed */
/* Only one button can be sensed at a time on the remote. */
/* Need to filter the remote button because the ADC is so fast */
remote_adc = adc_read(ADC_HPREMOTE);
btn = remote_buttons[(remote_adc + 64) / 128];
if (btn != lastbutton)
{
/* if the buttons dont agree twice in a row, then its none */
lastbutton = btn;
btn = BUTTON_NONE;
}
/* Check for hold first - exit if asserted with no button pressed */
if (button_hold())
return btn;
/* the side buttons - Check before doing all of the work on each bit */
buttons = GPGDAT & 0x1F;
if (buttons)
{
if (buttons & (1 << 0))
btn |= BUTTON_POWER;
if (buttons & (1 << 1))
btn |= BUTTON_MENU;
if (buttons & (1 << 2))
btn |= BUTTON_VOL_UP;
if (buttons & (1 << 3))
btn |= BUTTON_VOL_DOWN;
if (buttons & (1 << 4))
btn |= BUTTON_A;
}
/* the touchpad */
touchpad = GPJDAT & 0x10C9;
if (touchpad)
{
if (touchpad & (1 << 0))
btn |= BUTTON_UP;
if (touchpad & (1 << 12))
btn |= BUTTON_RIGHT;
if (touchpad & (1 << 6))
btn |= BUTTON_DOWN;
if (touchpad & (1 << 7))
btn |= BUTTON_LEFT;
if (touchpad & (1 << 3))
btn |= BUTTON_SELECT;
__buttonlight_flicker(DEFAULT_BRIGHTNESS_SETTING/2);
}
return btn;
}
bool headphones_inserted(void)
{
unsigned short remote_adc = adc_read(ADC_HPREMOTE);
if (remote_adc != ADC_READ_ERROR)
{
/* If there is nothing in the headphone socket, the ADC reads high */
if (remote_adc < 940)
headphones_detect = true;
else
headphones_detect = false;
}
return headphones_detect;
}
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