| /*************************************************************************** |
| * __________ __ ___. |
| * Open \______ \ ____ ____ | | _\_ |__ _______ ___ |
| * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / |
| * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < |
| * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ |
| * \/ \/ \/ \/ \/ |
| * $Id$ |
| * |
| * Copyright (C) 2006 by Jens Arnold |
| * |
| * 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 "backlight.h" |
| #include "adc.h" |
| |
| /* |
| Player hardware button hookup |
| ============================= |
| |
| Player |
| ------ |
| LEFT: AN0 |
| MENU: AN1 |
| RIGHT: AN2 |
| PLAY: AN3 |
| |
| STOP: PA11 |
| ON: PA5 |
| |
| All buttons are low active |
| */ |
| |
| void button_init_device(void) |
| { |
| /* set PA5 and PA11 as input pins */ |
| PACR1 &= 0xff3f; /* PA11MD = 00 */ |
| PACR2 &= 0xfbff; /* PA5MD = 0 */ |
| PAIOR &= ~0x0820; /* Inputs */ |
| } |
| |
| int button_read_device(void) |
| { |
| int btn = BUTTON_NONE; |
| int data; |
| |
| /* buttons are active low */ |
| if (adc_read(ADC_BUTTON_LEFT) < 0x180) |
| btn = BUTTON_LEFT; |
| if (adc_read(ADC_BUTTON_MENU) < 0x180) |
| btn |= BUTTON_MENU; |
| if (adc_read(ADC_BUTTON_RIGHT) < 0x180) |
| btn |= BUTTON_RIGHT; |
| if (adc_read(ADC_BUTTON_PLAY) < 0x180) |
| btn |= BUTTON_PLAY; |
| |
| /* check port A pins for ON and STOP */ |
| data = PADR; |
| if ( !(data & 0x0020) ) |
| btn |= BUTTON_ON; |
| if ( !(data & 0x0800) ) |
| btn |= BUTTON_STOP; |
| |
| return btn; |
| } |