| /*************************************************************************** |
| * __________ __ ___. |
| * Open \______ \ ____ ____ | | _\_ |__ _______ ___ |
| * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / |
| * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < |
| * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ |
| * \/ \/ \/ \/ \/ |
| * $Id:$ |
| * |
| * Copyright (C) 2010 Marcin Bukat |
| * |
| * 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 "cpu.h" |
| #include "system.h" |
| #include "button.h" |
| #include "backlight.h" |
| #include "adc.h" |
| |
| void button_init_device(void) |
| { |
| /* GPIO56 (main PLAY) |
| * GPIO41 (remote PLAY) |
| * as general purpose inputs |
| */ |
| or_l((1<<24)|(1<<9),&GPIO1_FUNCTION); |
| and_l(~((1<<24)|(1<<9)),&GPIO1_ENABLE); |
| } |
| |
| bool button_hold(void) |
| { |
| /* GPIO36 active high */ |
| return (GPIO1_READ & (1<<4))?true:false; |
| } |
| |
| bool remote_button_hold(void) |
| { |
| return adc_scan(ADC_REMOTE)<50?true:false; |
| } |
| |
| /* |
| * Get button pressed from hardware |
| */ |
| int button_read_device(void) |
| { |
| int btn = BUTTON_NONE; |
| int data = 0; |
| static bool hold_button = false; |
| static bool remote_hold_button = false; |
| |
| bool hold_button_old; |
| |
| /* read hold buttons status */ |
| hold_button_old = hold_button; |
| hold_button = button_hold(); |
| remote_hold_button = remote_button_hold(); |
| |
| #ifndef BOOTLOADER |
| /* Only main hold affects backlight */ |
| if (hold_button != hold_button_old) |
| backlight_hold_changed(hold_button); |
| #endif |
| |
| if (!hold_button) |
| { |
| data = adc_scan(ADC_BUTTONS); |
| |
| if (data < 2250) /* valid button */ |
| { |
| if (data < 900) /* middle */ |
| { |
| if (data < 500) |
| { |
| if (data > 200) |
| /* 200 - 500 */ |
| btn = BUTTON_REC; |
| } |
| else /* 900 - 500 */ |
| btn = BUTTON_VOL_DOWN; |
| } |
| else /* 2250 - 900 */ |
| { |
| if (data < 1600) |
| { |
| /* 1600 - 900 */ |
| if (data < 1200) |
| /* 1200 - 900 */ |
| btn = BUTTON_VOL_UP; |
| else /* 1600 - 1200 */ |
| btn = BUTTON_NEXT; |
| } |
| else /* 1600 - 2250 */ |
| { |
| if (data < 1900) |
| /* 1900 - 1600 */ |
| btn = BUTTON_PREV; |
| else /* 1900 - 2250 */ |
| btn = BUTTON_SELECT; |
| } |
| } |
| } |
| } |
| |
| if (!remote_hold_button) |
| { |
| data = adc_scan(ADC_REMOTE); |
| |
| if (data < 2050) /* valid button */ |
| { |
| if (data < 950) /* middle */ |
| { |
| if (data < 650) |
| { |
| if (data < 400) |
| { |
| if (data > 250) |
| /* 250 - 400 */ |
| btn = BUTTON_RC_VOL_DOWN; |
| } |
| else /* 650 - 400 */ |
| btn = BUTTON_RC_VOL_UP; |
| } |
| else /* 950 - 650 */ |
| btn = BUTTON_RC_NEXT; |
| } |
| else /* 2050 - 950 */ |
| { |
| if (data < 1900) |
| { |
| if (data < 1350) |
| /* 1350 - 900 */ |
| btn = BUTTON_RC_PREV; |
| } |
| else /* 2050 - 1900 */ |
| btn = BUTTON_RC_SELECT; |
| } |
| } |
| } |
| |
| data = GPIO1_READ; |
| |
| /* GPIO56 active high main PLAY/PAUSE/ON */ |
| if (!hold_button && ((data & (1<<24)))) |
| btn |= BUTTON_PLAY; |
| |
| /* GPIO41 active high remote PLAY/PAUSE/ON */ |
| if (!remote_hold_button && ((data & (1<<9)))) |
| btn |= BUTTON_RC_PLAY; |
| |
| return btn; |
| } |