159 lines
4.4 KiB
C
159 lines
4.4 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* 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"
|
|
|
|
enum keyboard_type_t {
|
|
KEYBOARD_V1,
|
|
KEYBOARD_V2,
|
|
};
|
|
|
|
static enum keyboard_type_t kbd_type;
|
|
|
|
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 ;
|
|
|
|
/* identify keyboard type */
|
|
SCU_IOMUXB_CON &= ~(1<<2);
|
|
GPIO_PCCON |= (1<<4);
|
|
if (GPIO_PCDR & (1<<4)) {
|
|
kbd_type = KEYBOARD_V1;
|
|
} else {
|
|
kbd_type = KEYBOARD_V2;
|
|
}
|
|
}
|
|
|
|
bool button_hold() {
|
|
return (GPIO_PADR & 1);
|
|
}
|
|
|
|
static int button_read_device_v1(void) {
|
|
int adc_val = adc_read(ADC_BUTTONS);
|
|
int button = 0;
|
|
|
|
if (adc_val < 480) { /* middle */
|
|
if (adc_val < 200) { /* 0 - 200 */
|
|
if (adc_val < 30) {
|
|
button = BUTTON_UP;
|
|
} else { /* 30 - 200 */
|
|
button = BUTTON_RIGHT;
|
|
}
|
|
} else { /* 200 - 480 */
|
|
if (adc_val < 370) { /* 200 - 370 */
|
|
button = BUTTON_SELECT;
|
|
} else { /* 370 - 480 */
|
|
button = BUTTON_DOWN;
|
|
}
|
|
}
|
|
} else { /* > 480 */
|
|
if (adc_val < 690) { /* 480 - 690 */
|
|
if (adc_val < 580) { /* 480 - 580 */
|
|
button = BUTTON_LEFT;
|
|
} else { /* 580 - 690 */
|
|
button = BUTTON_NEXT;
|
|
}
|
|
} else { /* > 680 */
|
|
if (adc_val < 840) { /* 680 - 840 */
|
|
button = BUTTON_PREV;
|
|
} else {
|
|
if (adc_val < 920) { /* 840 - 920 */
|
|
button = BUTTON_PLAY;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return button | (GPIO_PCDR & POWEROFF_BUTTON);
|
|
}
|
|
|
|
static int button_read_device_v2(void) {
|
|
int adc_val = adc_read(ADC_BUTTONS);
|
|
int adc_val2 = adc_read(ADC_EXTRA);
|
|
int button = 0;
|
|
|
|
/* Buttons on front panel */
|
|
if (adc_val < 520) { /* middle */
|
|
if (adc_val < 360) { /* 0 - 360 */
|
|
if (adc_val < 40) { /* 0 - 40 */
|
|
button |= BUTTON_UP;
|
|
} else { /* 40 - 360 */
|
|
button |= BUTTON_RIGHT;
|
|
}
|
|
} else { /* 360 - 520 */
|
|
button |= BUTTON_SELECT;
|
|
}
|
|
} else { /* >= 520 */
|
|
if (adc_val < 770) { /* 520 - 770 */
|
|
if (adc_val < 640) { /* 520 - 640 */
|
|
button |= BUTTON_DOWN;
|
|
} else { /* 640 - 770 */
|
|
button |= BUTTON_LEFT;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Buttons on top */
|
|
if (adc_val2 < 400) { /* 0 - 400 */
|
|
if (adc_val2 < 120) { /* 0 - 120 */
|
|
button |= BUTTON_NEXT;
|
|
} else { /* 120 - 400 */
|
|
button |= BUTTON_PREV;
|
|
}
|
|
} else { /* >= 400 */
|
|
if (adc_val2 < 560) { /* 400 - 560 */
|
|
button |= BUTTON_PLAY;
|
|
}
|
|
}
|
|
return button | (GPIO_PCDR & POWEROFF_BUTTON);
|
|
}
|
|
|
|
int button_read_device(void) {
|
|
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;
|
|
} else if (kbd_type == KEYBOARD_V1) {
|
|
return button_read_device_v1();
|
|
} else {
|
|
return button_read_device_v2();
|
|
}
|
|
}
|
|
|