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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2006 by Barry Wardell
*
* 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.
*
****************************************************************************/
/* Custom written for the H10 based on analysis of the GPIO data */
#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"
void button_init_device(void)
{
/* Enable REW, FF, Play, Left, Right, Hold buttons */
GPIOA_ENABLE |= 0xfc;
/* Enable POWER button */
GPIOB_ENABLE |= 0x1;
/* We need to output to pin 6 of GPIOD when reading the scroll pad value */
GPIOD_ENABLE |= 0x40;
GPIOD_OUTPUT_EN |= 0x40;
GPIOD_OUTPUT_VAL |= 0x40;
}
bool button_hold(void)
{
return (GPIOA_INPUT_VAL & 0x4)?false:true;
}
bool remote_button_hold(void)
{
return adc_scan(ADC_REMOTE) < 0x17;
}
/*
* Get button pressed from hardware
*/
int button_read_device(void)
{
int btn = BUTTON_NONE;
int data;
unsigned char state;
static bool hold_button = false;
static bool remote_hold_button = false;
bool hold_button_old;
bool remote_hold_button_old;
/* Hold */
hold_button_old = hold_button;
hold_button = button_hold();
#ifndef BOOTLOADER
/* light handling */
if (hold_button != hold_button_old)
{
backlight_hold_changed(hold_button);
}
#endif
/* device buttons */
if (!hold_button)
{
/* Read normal buttons */
state = GPIOA_INPUT_VAL & 0xf8;
if ((state & 0x8) == 0) btn |= BUTTON_FF;
if ((state & 0x10) == 0) btn |= BUTTON_PLAY;
if ((state & 0x20) == 0) btn |= BUTTON_REW;
if ((state & 0x40) == 0) btn |= BUTTON_RIGHT;
if ((state & 0x80) == 0) btn |= BUTTON_LEFT;
/* Read power button */
if (GPIOB_INPUT_VAL & 0x1) btn |= BUTTON_POWER;
/* Read scroller */
if ( GPIOD_INPUT_VAL & 0x20 )
{
GPIOD_OUTPUT_VAL &=~ 0x40;
udelay(50);
data = adc_scan(ADC_SCROLLPAD);
GPIOD_OUTPUT_VAL |= 0x40;
if(data < 0x210)
{
btn |= BUTTON_SCROLL_DOWN;
} else {
btn |= BUTTON_SCROLL_UP;
}
}
}
/* remote buttons */
remote_hold_button_old = remote_hold_button;
data = adc_scan(ADC_REMOTE);
remote_hold_button = data < 0x17;
#ifndef BOOTLOADER
if (remote_hold_button != remote_hold_button_old)
backlight_hold_changed(remote_hold_button);
#endif
if(!remote_hold_button)
{
if (data < 0x3FF)
{
if(data < 0x1F0)
if(data < 0x141)
btn |= BUTTON_RC_FF;
else
btn |= BUTTON_RC_REW;
else
if(data < 0x2BC)
btn |= BUTTON_RC_VOL_DOWN;
else
btn |= BUTTON_RC_VOL_UP;
}
}
/* remote play button should be dead if hold */
if (!remote_hold_button && !(GPIOA_INPUT_VAL & 0x1))
btn |= BUTTON_RC_PLAY;
return btn;
}
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