6a568761c8
switching GPIOB in order to read GPIOD96) (power button) is apparently unneeded Change-Id: I1fbf13f67f938806086754cdd5e389ef6746ae5f
80 lines
2.4 KiB
C
80 lines
2.4 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2008 François Dinel
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* Copyright © 2008-2009 Rafaël Carré
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "button.h"
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#include "as3525v2.h"
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#include "kernel.h"
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void button_init_device(void)
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{
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/* Set pins to input for reading buttons */
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GPIOC_DIR = 0; /* All C pins input */
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GPIOA_DIR &= ~(1<<1|1<<6|1<<7); /* Pins A1,A6,A7 input */
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/* OF does not set D6 to input */
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GPIOB_DIR |= (1<<6); /* Pin B6 output */
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GPIOB_DIR |= (1<<0); /* Pin B0 set output */
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}
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int button_read_device(void)
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{
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int buttons = 0;
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/* Buttons do not appear to need reset */
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/* D6 does not appear to need special handling */
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#if 0
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GPIOB_PIN(0) = 1; /* set B0 */
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int delay = 500;
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do {
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asm volatile("nop\n");
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} while (delay--);
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#endif
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if GPIOD_PIN(6) /* read D6 */
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buttons |= BUTTON_POWER;
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#if 0
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GPIOB_PIN(0) = 0; /* unset B0 */
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delay = 240;
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do {
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asm volatile("nop\n");
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} while (delay--);
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#endif
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if GPIOA_PIN(1)
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buttons |= BUTTON_HOME;
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if GPIOA_PIN(6)
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buttons |= BUTTON_VOL_DOWN;
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if GPIOA_PIN(7)
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buttons |= BUTTON_VOL_UP;
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if GPIOC_PIN(1)
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buttons |= BUTTON_DOWN;
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if GPIOC_PIN(2)
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buttons |= BUTTON_UP;
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if GPIOC_PIN(3)
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buttons |= BUTTON_LEFT;
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if GPIOC_PIN(4)
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buttons |= BUTTON_SELECT;
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if GPIOC_PIN(5)
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buttons |= BUTTON_RIGHT;
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return buttons;
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}
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