71 lines
2 KiB
C
71 lines
2 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 by Maurus Cuelenaere
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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 "config.h"
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#include "system.h"
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#include "jz4740.h"
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#include "button-target.h"
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#define BTN_VOL_DOWN (1 << 27)
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#define BTN_VOL_UP (1 << 0)
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#define BTN_MENU (1 << 1)
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#define BTN_OFF (1 << 29)
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#define BTN_HOLD (1 << 16)
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#define BTN_MASK (BTN_VOL_DOWN | BTN_VOL_UP \
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| BTN_MENU | BTN_OFF )
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bool button_hold(void)
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{
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return (~REG_GPIO_PXPIN(3) & BTN_HOLD ? 1 : 0);
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}
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void button_init_device(void)
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{
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__gpio_port_as_input(3, 29);
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__gpio_port_as_input(3, 27);
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__gpio_port_as_input(3, 16);
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__gpio_port_as_input(3, 1);
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__gpio_port_as_input(3, 0);
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}
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int button_read_device(void)
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{
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if(button_hold())
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return 0;
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unsigned int key = ~(__gpio_get_port(3));
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int ret = 0;
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if(key & BTN_MASK)
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{
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if(key & BTN_VOL_DOWN)
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ret |= BUTTON_VOL_DOWN;
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if(key & BTN_VOL_UP)
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ret |= BUTTON_VOL_UP;
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if(key & BTN_MENU)
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ret |= BUTTON_MENU;
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if(key & BTN_OFF)
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ret |= BUTTON_POWER;
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}
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return ret;
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}
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