| /*************************************************************************** |
| * __________ __ ___. |
| * Open \______ \ ____ ____ | | _\_ |__ _______ ___ |
| * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / |
| * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < |
| * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ |
| * \/ \/ \/ \/ \/ |
| * $Id$ |
| * |
| * Copyright (C) 2006 by Linus Nielsen Feltzing |
| * |
| * All files in this archive are subject to the GNU General Public License. |
| * See the file COPYING in the source tree root for full license agreement. |
| * |
| * 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" |
| #include "lcd-remote-target.h" |
| |
| /* have buttons scan by default */ |
| static bool button_scan_on = true; |
| static bool hold_button = false; |
| static bool remote_hold_button = false; |
| |
| void button_init_device(void) |
| { |
| /* Power, Remote Play & Hold switch */ |
| GPIO_FUNCTION |= 0x0e000000; |
| GPIO_ENABLE &= ~0x0e000000; |
| } |
| |
| void button_enable_scan(bool enable) |
| { |
| button_scan_on = enable; |
| } |
| |
| bool button_scan_enabled(void) |
| { |
| return button_scan_on; |
| } |
| |
| bool button_hold(void) |
| { |
| return (GPIO_READ & 0x08000000) == 0; |
| } |
| |
| bool remote_button_hold(void) |
| { |
| return remote_hold_button; |
| } |
| |
| int button_read_device(void) |
| { |
| int btn = BUTTON_NONE; |
| bool hold_button_old; |
| bool remote_hold_button_old; |
| static int prev_data = 0xff; |
| static int last_valid = 0xff; |
| int data; |
| |
| /* normal buttons */ |
| hold_button_old = hold_button; |
| hold_button = button_hold(); |
| |
| #ifndef BOOTLOADER |
| /* give BL notice if HB state chaged */ |
| if (hold_button != hold_button_old) |
| backlight_hold_changed(hold_button); |
| #endif |
| |
| if (button_scan_on && !hold_button) |
| { |
| data = adc_scan(ADC_BUTTONS); |
| |
| /* ADC debouncing: Only accept new reading if it's |
| * stable (+/-1). Use latest stable value otherwise. */ |
| if ((unsigned)(data - prev_data + 1) <= 2) |
| last_valid = data; |
| prev_data = data; |
| data = last_valid; |
| |
| if (data < 0xf0) |
| { |
| if(data < 0x7c) |
| if(data < 0x42) |
| btn = BUTTON_LEFT; |
| else |
| if(data < 0x62) |
| btn = BUTTON_RIGHT; |
| else |
| btn = BUTTON_SELECT; |
| else |
| if(data < 0xb6) |
| if(data < 0x98) |
| btn = BUTTON_PLAY; |
| else |
| btn = BUTTON_REC; |
| else |
| if(data < 0xd3) |
| btn = BUTTON_DOWN; |
| else |
| btn = BUTTON_UP; |
| } |
| } |
| |
| /* remote buttons */ |
| data = remote_detect() ? adc_scan(ADC_REMOTE) : 0xff; |
| |
| remote_hold_button_old = remote_hold_button; |
| remote_hold_button = data < 0x17; |
| |
| #ifndef BOOTLOADER |
| if (remote_hold_button != remote_hold_button_old) |
| remote_backlight_hold_changed(remote_hold_button); |
| #endif |
| |
| if (!remote_hold_button) |
| { |
| if (data < 0xee) |
| { |
| if(data < 0x7a) |
| if(data < 0x41) |
| btn |= BUTTON_RC_FF; |
| else |
| if(data < 0x61) |
| btn |= BUTTON_RC_REW; |
| else |
| btn |= BUTTON_RC_MODE; |
| else |
| if(data < 0xb4) |
| if(data < 0x96) |
| btn |= BUTTON_RC_REC; |
| else |
| btn |= BUTTON_RC_MENU; |
| else |
| if(data < 0xd1) |
| btn |= BUTTON_RC_VOL_UP; |
| else |
| btn |= BUTTON_RC_VOL_DOWN; |
| } |
| } |
| |
| data = GPIO_READ; |
| |
| /* hold and power are mutually exclusive */ |
| if (!(data & 0x04000000)) |
| btn |= BUTTON_POWER; |
| |
| /* remote play button should be dead if hold */ |
| if (!remote_hold_button && !(data & 0x02000000)) |
| btn |= BUTTON_RC_PLAY; |
| |
| return btn; |
| } |