155 lines
4 KiB
C
155 lines
4 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2006 by Barry Wardell
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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/* Custom written for the H10 based on analysis of the GPIO data */
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#include <stdlib.h>
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#include "config.h"
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#include "cpu.h"
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#include "system.h"
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#include "button.h"
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#include "kernel.h"
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#include "backlight.h"
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#include "adc.h"
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void button_init_device(void)
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{
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/* Enable REW, FF, Play, Left, Right, Hold buttons */
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GPIO_SET_BITWISE(GPIOA_ENABLE, 0xfc);
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/* Enable POWER button */
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GPIO_SET_BITWISE(GPIOB_ENABLE, 0x01);
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/* We need to output to pin 6 of GPIOD when reading the scroll pad value */
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GPIO_SET_BITWISE(GPIOD_ENABLE, 0x40);
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GPIO_SET_BITWISE(GPIOD_OUTPUT_EN, 0x40);
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GPIO_SET_BITWISE(GPIOD_OUTPUT_VAL, 0x40);
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}
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bool button_hold(void)
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{
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return (GPIOA_INPUT_VAL & 0x4)?false:true;
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}
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bool remote_button_hold(void)
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{
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return adc_scan(ADC_REMOTE) < 0x2B;
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}
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/*
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* Get button pressed from hardware
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*/
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int button_read_device(void)
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{
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int btn = BUTTON_NONE;
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int data;
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unsigned char state;
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static bool hold_button = false;
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static bool remote_hold_button = false;
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#ifndef BOOTLOADER
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bool hold_button_old;
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bool remote_hold_button_old;
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#endif
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/* Hold */
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#ifndef BOOTLOADER
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hold_button_old = hold_button;
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#endif
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hold_button = button_hold();
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#ifndef BOOTLOADER
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/* light handling */
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if (hold_button != hold_button_old)
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{
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backlight_hold_changed(hold_button);
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}
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#endif
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/* device buttons */
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if (!hold_button)
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{
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/* Read normal buttons */
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state = GPIOA_INPUT_VAL & 0xf8;
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if ((state & 0x8) == 0) btn |= BUTTON_FF;
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if ((state & 0x10) == 0) btn |= BUTTON_PLAY;
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if ((state & 0x20) == 0) btn |= BUTTON_REW;
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if ((state & 0x40) == 0) btn |= BUTTON_RIGHT;
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if ((state & 0x80) == 0) btn |= BUTTON_LEFT;
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/* Read power button */
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if (GPIOB_INPUT_VAL & 0x1) btn |= BUTTON_POWER;
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/* Read scroller */
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if ( GPIOD_INPUT_VAL & 0x20 )
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{
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GPIO_CLEAR_BITWISE(GPIOD_OUTPUT_VAL, 0x40);
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udelay(250);
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data = adc_scan(ADC_SCROLLPAD);
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GPIO_SET_BITWISE(GPIOD_OUTPUT_VAL, 0x40);
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if(data < 0x224)
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{
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btn |= BUTTON_SCROLL_DOWN;
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} else {
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btn |= BUTTON_SCROLL_UP;
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}
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}
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}
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#ifndef BOOTLOADER
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/* remote buttons */
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remote_hold_button_old = remote_hold_button;
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#endif
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data = adc_scan(ADC_REMOTE);
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remote_hold_button = data < 0x2B;
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#ifndef BOOTLOADER
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if (remote_hold_button != remote_hold_button_old)
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backlight_hold_changed(remote_hold_button);
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#endif
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if(!remote_hold_button)
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{
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if (data < 0x3FF)
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{
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if(data < 0x204)
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if(data < 0x155)
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btn |= BUTTON_RC_FF;
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else
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btn |= BUTTON_RC_REW;
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else
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if(data < 0x2D0)
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btn |= BUTTON_RC_VOL_DOWN;
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else
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btn |= BUTTON_RC_VOL_UP;
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}
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}
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/* remote play button should be dead if hold */
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if (!remote_hold_button && !(GPIOA_INPUT_VAL & 0x1))
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btn |= BUTTON_RC_PLAY;
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return btn;
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}
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