611737bde8
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@12627 a1c6a512-1295-4272-9138-f99709370657
160 lines
4.3 KiB
C
160 lines
4.3 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 Linus Nielsen Feltzing
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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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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#include "config.h"
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#include "system.h"
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#include "button.h"
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#include "backlight.h"
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#include "adc.h"
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#include "lcd-remote-target.h"
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/* have buttons scan by default */
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static bool button_scan_on = true;
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static bool hold_button = false;
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static bool remote_hold_button = false;
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void button_init_device(void)
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{
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/* Power, Remote Play & Hold switch */
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GPIO_FUNCTION |= 0x0e000000;
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GPIO_ENABLE &= ~0x0e000000;
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}
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void button_enable_scan(bool enable)
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{
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button_scan_on = enable;
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}
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bool button_scan_enabled(void)
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{
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return button_scan_on;
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}
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bool button_hold(void)
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{
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return (GPIO_READ & 0x08000000) == 0;
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}
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bool remote_button_hold(void)
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{
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return remote_hold_button;
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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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bool hold_button_old;
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bool remote_hold_button_old;
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static int prev_data = 0xff;
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static int last_valid = 0xff;
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int data;
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/* normal buttons */
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hold_button_old = hold_button;
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hold_button = button_hold();
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#ifndef BOOTLOADER
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/* give BL notice if HB state chaged */
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if (hold_button != hold_button_old)
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backlight_hold_changed(hold_button);
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#endif
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if (button_scan_on && !hold_button)
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{
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data = adc_scan(ADC_BUTTONS);
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/* ADC debouncing: Only accept new reading if it's
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* stable (+/-1). Use latest stable value otherwise. */
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if ((unsigned)(data - prev_data + 1) <= 2)
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last_valid = data;
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prev_data = data;
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data = last_valid;
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if (data < 0xf0)
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{
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if(data < 0x7c)
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if(data < 0x42)
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btn = BUTTON_LEFT;
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else
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if(data < 0x62)
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btn = BUTTON_RIGHT;
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else
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btn = BUTTON_SELECT;
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else
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if(data < 0xb6)
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if(data < 0x98)
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btn = BUTTON_PLAY;
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else
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btn = BUTTON_REC;
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else
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if(data < 0xd3)
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btn = BUTTON_DOWN;
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else
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btn = BUTTON_UP;
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}
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}
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/* remote buttons */
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data = remote_detect() ? adc_scan(ADC_REMOTE) : 0xff;
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remote_hold_button_old = remote_hold_button;
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remote_hold_button = data < 0x17;
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#ifndef BOOTLOADER
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if (remote_hold_button != remote_hold_button_old)
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remote_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 < 0xee)
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{
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if(data < 0x7a)
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if(data < 0x41)
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btn |= BUTTON_RC_FF;
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else
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if(data < 0x61)
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btn |= BUTTON_RC_REW;
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else
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btn |= BUTTON_RC_MODE;
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else
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if(data < 0xb4)
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if(data < 0x96)
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btn |= BUTTON_RC_REC;
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else
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btn |= BUTTON_RC_MENU;
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else
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if(data < 0xd1)
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btn |= BUTTON_RC_VOL_UP;
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else
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btn |= BUTTON_RC_VOL_DOWN;
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}
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}
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data = GPIO_READ;
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/* hold and power are mutually exclusive */
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if (!(data & 0x04000000))
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btn |= BUTTON_POWER;
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/* remote play button should be dead if hold */
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if (!remote_hold_button && !(data & 0x02000000))
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btn |= BUTTON_RC_PLAY;
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return btn;
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}
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