75 lines
1.8 KiB
C
75 lines
1.8 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) 2006 by Jens Arnold
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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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 "config.h"
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#include "system.h"
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#include "button.h"
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#include "backlight.h"
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#include "adc.h"
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/*
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Player hardware button hookup
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=============================
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Player
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------
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LEFT: AN0
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MENU: AN1
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RIGHT: AN2
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PLAY: AN3
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STOP: PA11
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ON: PA5
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All buttons are low active
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*/
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void button_init_device(void)
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{
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/* set PA5 and PA11 as input pins */
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PACR1 &= 0xff3f; /* PA11MD = 00 */
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PACR2 &= 0xfbff; /* PA5MD = 0 */
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PAIOR &= ~0x0820; /* Inputs */
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}
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int button_read_device(void)
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{
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int btn = BUTTON_NONE;
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int data;
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/* buttons are active low */
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if (adc_read(0) < 0x180)
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btn = BUTTON_LEFT;
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if (adc_read(1) < 0x180)
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btn |= BUTTON_MENU;
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if (adc_read(2) < 0x180)
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btn |= BUTTON_RIGHT;
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if (adc_read(3) < 0x180)
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btn |= BUTTON_PLAY;
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/* check port A pins for ON and STOP */
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data = PADR;
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if ( !(data & 0x0020) )
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btn |= BUTTON_ON;
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if ( !(data & 0x0800) )
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btn |= BUTTON_STOP;
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return btn;
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}
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