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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
*
*
* Copyright (C) 2009 by Jorge Pinto
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "at91sam9260.h"
#include "button.h"
#define BUTTON_01 AT91C_PIO_PB4
#define BUTTON_02 AT91C_PIO_PB5
#define BUTTON_03 AT91C_PIO_PB27
#define BUTTON_04 AT91C_PIO_PB26
#define BUTTON_05 AT91C_PIO_PB25
#define BUTTON_06 AT91C_PIO_PB24
#define BUTTON_07 AT91C_PIO_PB22
#define BUTTON_08 AT91C_PIO_PB23
void button_init_device(void)
{
/* Enable the periph clock for the PIO controller */
/* This is mandatory when PIO are configured as input */
AT91C_PMC_PCER = (1 << AT91C_ID_PIOB);
/* Set the PIO line in input */
AT91C_PIOB_ODR = (BUTTON_01 |
BUTTON_02 |
BUTTON_03 |
BUTTON_04 |
BUTTON_05 |
BUTTON_06 |
BUTTON_07 |
BUTTON_08);
/* Set the PIO controller in PIO mode instead of peripheral mode */
AT91C_PIOB_PER = (BUTTON_01 |
BUTTON_02 |
BUTTON_03 |
BUTTON_04 |
BUTTON_05 |
BUTTON_06 |
BUTTON_07 |
BUTTON_08);
}
bool button_hold(void)
{
return (0);
}
/*
* Get button pressed from hardware
*/
int button_read_device(void)
{
uint32_t buttons = AT91C_PIOB_PDSR;
uint32_t ret = 0;
if ((buttons & BUTTON_01) == 0)
ret |= BUTTON_UP;
if ((buttons & BUTTON_02) == 0)
ret |= BUTTON_RIGHT;
if ((buttons & BUTTON_03) == 0)
ret |= BUTTON_PLAY;
if ((buttons & BUTTON_04) == 0)
ret |= BUTTON_SELECT;
if ((buttons & BUTTON_05) == 0)
ret |= BUTTON_LEFT;
if ((buttons & BUTTON_06) == 0)
ret |= BUTTON_DOWN;
if ((buttons & BUTTON_07) == 0)
ret |= BUTTON_STOP;
if ((buttons & BUTTON_08) == 0)
ret |= BUTTON_MENU;
return ret;
}
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