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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)
{
/* We need to output to pin 6 of GPIOD when reading the scroll pad value */
GPIOD_OUTPUT_EN |= 0x40;
GPIOD_OUTPUT_VAL |= 0x40;
}
bool button_hold(void)
{
return (GPIOA_INPUT_VAL & 0x4)?false:true;
}
/*
* Get button pressed from hardware
*/
int button_read_device(void)
{
int btn = BUTTON_NONE;
unsigned char state;
static bool hold_button = false;
#ifndef BOOTLOADER
/* light handling */
if (hold_button && !button_hold())
{
backlight_hold_changed(hold_button);
}
#endif
hold_button = button_hold();
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 )
{
int scroll_pos;
GPIOD_OUTPUT_VAL &=~ 0x40;
udelay(50);
scroll_pos = adc_scan(ADC_SCROLLPAD);
GPIOD_OUTPUT_VAL |= 0x40;
if(scroll_pos < 0x210)
{
btn |= BUTTON_SCROLL_DOWN;
} else {
btn |= BUTTON_SCROLL_UP;
}
}
}
return btn;
}
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