7d67df94a6
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17549 a1c6a512-1295-4272-9138-f99709370657
152 lines
4 KiB
C
152 lines
4 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* 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 "config.h"
|
|
#include "cpu.h"
|
|
#include "system.h"
|
|
#include "button.h"
|
|
#include "kernel.h"
|
|
#include "backlight.h"
|
|
#include "adc.h"
|
|
#include "system.h"
|
|
#include "backlight-target.h"
|
|
|
|
static bool headphones_detect;
|
|
static bool hold_button = false;
|
|
|
|
static int const remote_buttons[] =
|
|
{
|
|
BUTTON_NONE, /* Headphones connected - remote disconnected */
|
|
BUTTON_RC_PLAY,
|
|
BUTTON_RC_DSP,
|
|
BUTTON_RC_REW,
|
|
BUTTON_RC_FF,
|
|
BUTTON_RC_VOL_UP,
|
|
BUTTON_RC_VOL_DOWN,
|
|
BUTTON_NONE, /* Remote control attached - no buttons pressed */
|
|
BUTTON_NONE, /* Nothing in the headphone socket */
|
|
};
|
|
|
|
void button_init_device(void)
|
|
{
|
|
/* Some button inputs need the internal pullups disabled to function */
|
|
GPGUP|=0x031F;
|
|
GPJUP|=0x1FFF;
|
|
}
|
|
|
|
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;
|
|
bool hold_button_old;
|
|
|
|
/* normal buttons */
|
|
hold_button_old = hold_button;
|
|
hold_button = button_hold();
|
|
|
|
#ifndef BOOTLOADER
|
|
/* give BL notice if HB state chaged */
|
|
if (hold_button != hold_button_old)
|
|
backlight_hold_changed(hold_button);
|
|
#endif
|
|
|
|
/* 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);
|
|
|
|
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;
|
|
}
|
|
|
|
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;
|
|
buttonlight_on();
|
|
}
|
|
|
|
/* Check for hold first - exit if asserted with no button pressed */
|
|
if (hold_button)
|
|
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;
|
|
buttonlight_on();
|
|
}
|
|
|
|
/* the touchpad */
|
|
touchpad = GPJDAT & 0x10C9;
|
|
if (touchpad)
|
|
{
|
|
if (touchpad & ((1 << 1) | (1 << 0)))
|
|
btn |= BUTTON_UP;
|
|
|
|
if (touchpad & ((1 << 12) | (1 << 11)))
|
|
btn |= BUTTON_RIGHT;
|
|
|
|
if (touchpad & ((1 << 6) | (1 << 5)))
|
|
btn |= BUTTON_DOWN;
|
|
|
|
if (touchpad & ((1 << 8) | (1 << 7)))
|
|
btn |= BUTTON_LEFT;
|
|
|
|
if (touchpad & (1 << 3))
|
|
btn |= BUTTON_SELECT;
|
|
buttonlight_on();
|
|
}
|
|
|
|
return btn;
|
|
}
|
|
|
|
bool headphones_inserted(void)
|
|
{
|
|
return headphones_detect;
|
|
}
|