blob: 880f5fd33830ac92dd3ee7e3881dccc782aa9225 [file] [log] [blame]
Marcin Bukat28d54c62010-04-26 21:40:16 +00001/***************************************************************************
2 * __________ __ ___.
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
7 * \/ \/ \/ \/ \/
8 * $Id:$
9 *
10 * Copyright (C) 2010 Marcin Bukat
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
16 *
17 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
18 * KIND, either express or implied.
19 *
20 ****************************************************************************/
21
22#include "config.h"
23#include "cpu.h"
24#include "system.h"
25#include "button.h"
26#include "backlight.h"
27#include "adc.h"
28
29void button_init_device(void)
30{
Marcin Bukat8d3591a2010-07-03 20:20:42 +000031 /* GPIO56 (main PLAY)
32 * GPIO41 (remote PLAY)
33 * as general purpose inputs
34 */
35 or_l((1<<24)|(1<<9),&GPIO1_FUNCTION);
36 and_l(~((1<<24)|(1<<9)),&GPIO1_ENABLE);
Marcin Bukat28d54c62010-04-26 21:40:16 +000037}
38
39bool button_hold(void)
40{
41 /* GPIO36 active high */
42 return (GPIO1_READ & (1<<4))?true:false;
43}
44
Marcin Bukat8d3591a2010-07-03 20:20:42 +000045bool remote_button_hold(void)
46{
47 return adc_scan(ADC_REMOTE)<50?true:false;
48}
Marcin Bukat28d54c62010-04-26 21:40:16 +000049
50/*
51 * Get button pressed from hardware
52 */
53int button_read_device(void)
54{
55 int btn = BUTTON_NONE;
56 int data = 0;
57 static bool hold_button = false;
Marcin Bukat8d3591a2010-07-03 20:20:42 +000058 static bool remote_hold_button = false;
Marcin Bukat28d54c62010-04-26 21:40:16 +000059
Marcin Bukat28d54c62010-04-26 21:40:16 +000060 bool hold_button_old;
61
Marcin Bukat8d3591a2010-07-03 20:20:42 +000062 /* read hold buttons status */
Marcin Bukat28d54c62010-04-26 21:40:16 +000063 hold_button_old = hold_button;
64 hold_button = button_hold();
Marcin Bukat8d3591a2010-07-03 20:20:42 +000065 remote_hold_button = remote_button_hold();
Marcin Bukat28d54c62010-04-26 21:40:16 +000066
67#ifndef BOOTLOADER
Marcin Bukat8d3591a2010-07-03 20:20:42 +000068 /* Only main hold affects backlight */
Marcin Bukat28d54c62010-04-26 21:40:16 +000069 if (hold_button != hold_button_old)
70 backlight_hold_changed(hold_button);
71#endif
72
73 if (!hold_button)
74 {
Marcin Bukat2a502702010-04-30 12:42:51 +000075 data = adc_scan(ADC_BUTTONS);
Marcin Bukat28d54c62010-04-26 21:40:16 +000076
Marcin Bukat8d3591a2010-07-03 20:20:42 +000077 if (data < 2250) /* valid button */
Marcin Bukat28d54c62010-04-26 21:40:16 +000078 {
79 if (data < 900) /* middle */
80 {
81 if (data < 500)
82 {
83 if (data > 200)
84 /* 200 - 500 */
85 btn = BUTTON_REC;
86 }
87 else /* 900 - 500 */
88 btn = BUTTON_VOL_DOWN;
89 }
90 else /* 2250 - 900 */
91 {
92 if (data < 1600)
93 {
94 /* 1600 - 900 */
95 if (data < 1200)
96 /* 1200 - 900 */
97 btn = BUTTON_VOL_UP;
98 else /* 1600 - 1200 */
99 btn = BUTTON_NEXT;
100 }
101 else /* 1600 - 2250 */
102 {
103 if (data < 1900)
104 /* 1900 - 1600 */
105 btn = BUTTON_PREV;
106 else /* 1900 - 2250 */
107 btn = BUTTON_SELECT;
108 }
109 }
110 }
111 }
112
Marcin Bukat8d3591a2010-07-03 20:20:42 +0000113 if (!remote_hold_button)
114 {
115 data = adc_scan(ADC_REMOTE);
116
117 if (data < 2050) /* valid button */
118 {
119 if (data < 950) /* middle */
120 {
121 if (data < 650)
122 {
123 if (data < 400)
124 {
125 if (data > 250)
126 /* 250 - 400 */
127 btn = BUTTON_RC_VOL_DOWN;
128 }
129 else /* 650 - 400 */
130 btn = BUTTON_RC_VOL_UP;
131 }
132 else /* 950 - 650 */
133 btn = BUTTON_RC_NEXT;
134 }
135 else /* 2050 - 950 */
136 {
137 if (data < 1900)
138 {
139 if (data < 1350)
140 /* 1350 - 900 */
141 btn = BUTTON_RC_PREV;
142 }
143 else /* 2050 - 1900 */
144 btn = BUTTON_RC_SELECT;
145 }
146 }
147 }
Marcin Bukat28d54c62010-04-26 21:40:16 +0000148
149 data = GPIO1_READ;
150
151 /* GPIO56 active high main PLAY/PAUSE/ON */
152 if (!hold_button && ((data & (1<<24))))
153 btn |= BUTTON_PLAY;
Marcin Bukat8d3591a2010-07-03 20:20:42 +0000154
155 /* GPIO41 active high remote PLAY/PAUSE/ON */
156 if (!remote_hold_button && ((data & (1<<9))))
157 btn |= BUTTON_RC_PLAY;
Marcin Bukat28d54c62010-04-26 21:40:16 +0000158
159 return btn;
160}