109 lines
2.8 KiB
C
109 lines
2.8 KiB
C
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/***************************************************************************
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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-target.h"
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#include "as3525v2.h"
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#include "kernel.h"
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/* FIXME : use Clipv1 like driver (FS#10285) */
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void button_init_device(void)
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{
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GPIOA_DIR &= ~((1<<7) | (1<<3));
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GPIOD_DIR &= ~((1<<2) | (1<<1) | (1<<0));
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GPIOD_PIN(3) = 1<<3;
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GPIOD_PIN(4) = 1<<4;
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GPIOD_PIN(5) = 1<<5;
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GPIOD_DIR |= ((1<<5) | (1<<4) | (1<<3));
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}
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int button_read_device(void)
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{
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int result = 0;
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static unsigned power_counter = 0;
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if(button_hold())
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{
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power_counter = HZ;
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return 0;
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}
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/* direct GPIO connections */
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/* read power, but not if hold button was just released, since
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* you basically always hit power due to the slider mechanism after
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* releasing hold (wait 1 sec) */
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if (power_counter)
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power_counter--;
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if (GPIOA_PIN(7) && !power_counter)
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result |= BUTTON_POWER;
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/* This is a keypad using D3-D5 as columns and D0-D2 as rows */
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GPIOD_PIN(3) = 0x00; /* activate D3 */
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asm volatile ("nop\nnop\nnop\nnop\nnop\n"); /* wait a bit for reliable results */
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/* D3D0 is unused */
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if (!GPIOD_PIN(1))
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result |= BUTTON_VOL_UP;
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if (!GPIOD_PIN(2))
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result |= BUTTON_UP;
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GPIOD_PIN(3) = 1<<3;
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GPIOD_PIN(4) = 0x00; /* activate D4 */
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asm volatile ("nop\nnop\nnop\nnop\nnop\n");
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if (!GPIOD_PIN(0))
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result |= BUTTON_LEFT;
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if (!GPIOD_PIN(1))
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result |= BUTTON_SELECT;
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if (!GPIOD_PIN(2))
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result |= BUTTON_RIGHT;
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GPIOD_PIN(4) = 1<<4;
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GPIOD_PIN(5) = 0x00; /* activate D5 */
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asm volatile ("nop\nnop\nnop\nnop\nnop\n");
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if (!GPIOD_PIN(0))
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result |= BUTTON_DOWN;
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if (!GPIOD_PIN(1))
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result |= BUTTON_VOL_DOWN;
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if (!GPIOD_PIN(2))
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result |= BUTTON_HOME;
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GPIOD_PIN(5) = 1<<5;
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return result;
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}
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bool button_hold(void)
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{
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return (GPIOA_PIN(3) != 0);
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}
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