75 lines
2.2 KiB
C
75 lines
2.2 KiB
C
|
/***************************************************************************
|
||
|
|
* __________ __ ___.
|
||
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
||
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
||
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
||
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
||
|
|
* \/ \/ \/ \/ \/
|
||
|
|
* $Id$
|
||
|
|
*
|
||
|
|
* Copyright (C) 2013 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"
|
||
|
|
#include "pca9555.h"
|
||
|
|
|
||
|
|
extern unsigned short pca9555_in_ports;
|
||
|
|
|
||
|
|
/* upper bounds of key's voltage values */
|
||
|
|
#define ADV_KEYUP 0x05B + 0x10
|
||
|
|
#define ADV_KEYDOWN 0x0F3 + 0x10
|
||
|
|
#define ADV_KEYLEFT 0x190 + 0x10
|
||
|
|
#define ADV_KEYRIGHT 0x22C + 0x10
|
||
|
|
#define ADV_KEYMENU 0x2CA + 0x10
|
||
|
|
|
||
|
|
|
||
|
|
void button_init_device(void) {
|
||
|
|
GPIO_PCCON &= ~(1<<1);
|
||
|
|
pca9555_init();
|
||
|
|
}
|
||
|
|
|
||
|
|
int button_read_device(void) {
|
||
|
|
int adc_val = adc_read(ADC_BUTTONS);
|
||
|
|
int button = 0;
|
||
|
|
|
||
|
|
if (adc_val < ADV_KEYLEFT) {
|
||
|
|
if (adc_val < ADV_KEYDOWN) {
|
||
|
|
if (adc_val < ADV_KEYUP) {
|
||
|
|
button = BUTTON_UP;
|
||
|
|
} else {
|
||
|
|
button = BUTTON_DOWN;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
button = BUTTON_LEFT;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
if (adc_val < ADV_KEYRIGHT) {
|
||
|
|
button = BUTTON_RIGHT;
|
||
|
|
} else if (adc_val < ADV_KEYMENU) {
|
||
|
|
button = BUTTON_MENU;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (GPIO_PCDR & (1<<1)) {
|
||
|
|
button |= BUTTON_PLAY;
|
||
|
|
}
|
||
|
|
if (((GPIO_PFDR&(1<<2)) == 0) &&
|
||
|
|
((pca9555_in_ports & (1<<15)) == 0)) {
|
||
|
|
button |= BUTTON_BACK;
|
||
|
|
}
|
||
|
|
return button;
|
||
|
|
}
|