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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2011 Andrew Ryabinin
*
* 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 "config.h"
#include "system.h"
#include "button.h"
#include "adc.h"
#include "backlight.h"
void button_init_device(void) {
/* setup button gpio as input */
GPIO_PCCON &= ~(POWEROFF_BUTTON);
GPIO_PACON &= ~(1);
/* setup button gpio as pulldown */
SCU_GPIOUPCON |= (1<<17) |
1 ;
}
bool button_hold() {
return (GPIO_PADR & 1);
}
int button_read_device(void) {
int adc_val = adc_read(ADC_BUTTONS);
int gpio_btn = GPIO_PCDR & BUTTON_POWER;
static bool hold_button = false;
bool hold_button_old;
hold_button_old = hold_button;
hold_button = button_hold();
#ifndef BOOTLOADER
if (hold_button != hold_button_old) {
backlight_hold_changed(hold_button);
}
#endif
if (hold_button) {
return 0;
}
if (adc_val < 380) { /* 0 - 379 */
if (adc_val < 250) { /* 0 - 249 */
if (adc_val < 30) { /* 0 - 29 */
return BUTTON_UP | gpio_btn;
} else { /* 30 - 249 */
return BUTTON_RIGHT | gpio_btn;
}
} else { /* 250 - 379 */
return BUTTON_LEFT | gpio_btn;
}
} else { /* > 380 */
if (adc_val < 460) { /* 380 - 459 */
return BUTTON_DOWN | gpio_btn;
} else { /* > 460 */
if (adc_val < 560) {
return BUTTON_SELECT | gpio_btn;
}
}
}
return gpio_btn;
}
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