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author | Marcin Bukat <marcin.bukat@gmail.com> | 2010-04-26 21:40:16 +0000 |
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committer | Marcin Bukat <marcin.bukat@gmail.com> | 2010-04-26 21:40:16 +0000 |
commit | 28d54c6016459ffe93c0be2efea7de27c38d783c (patch) | |
tree | 9a7a71481f0a82599616a3e9f4e5bdad9fee8d6c /firmware/target/coldfire/mpio/hd200/button-hd200.c | |
parent | b09d3aec392538ca0934644ff6357c41aaa4c323 (diff) | |
download | rockbox-28d54c6016459ffe93c0be2efea7de27c38d783c.tar.gz rockbox-28d54c6016459ffe93c0be2efea7de27c38d783c.zip |
Add MPIO HD200 port - new files
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25725 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware/target/coldfire/mpio/hd200/button-hd200.c')
-rw-r--r-- | firmware/target/coldfire/mpio/hd200/button-hd200.c | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/firmware/target/coldfire/mpio/hd200/button-hd200.c b/firmware/target/coldfire/mpio/hd200/button-hd200.c new file mode 100644 index 0000000000..b40c3324e1 --- /dev/null +++ b/firmware/target/coldfire/mpio/hd200/button-hd200.c | |||
@@ -0,0 +1,123 @@ | |||
1 | /*************************************************************************** | ||
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 | |||
29 | void button_init_device(void) | ||
30 | { | ||
31 | /* Set GPIO36, GPIO56 as general purpose inputs */ | ||
32 | or_l((1<<4)|(1<<24),&GPIO1_FUNCTION); | ||
33 | and_l(~((1<<4)|(1<<24)),&GPIO1_ENABLE); | ||
34 | } | ||
35 | |||
36 | bool button_hold(void) | ||
37 | { | ||
38 | /* GPIO36 active high */ | ||
39 | return (GPIO1_READ & (1<<4))?true:false; | ||
40 | } | ||
41 | |||
42 | |||
43 | /* | ||
44 | * Get button pressed from hardware | ||
45 | */ | ||
46 | int button_read_device(void) | ||
47 | { | ||
48 | int btn = BUTTON_NONE; | ||
49 | int data = 0; | ||
50 | static bool hold_button = false; | ||
51 | |||
52 | /* for moving average filter */ | ||
53 | static unsigned short button_filter[4]; | ||
54 | static unsigned char index; | ||
55 | |||
56 | bool hold_button_old; | ||
57 | |||
58 | /* normal buttons */ | ||
59 | hold_button_old = hold_button; | ||
60 | hold_button = button_hold(); | ||
61 | |||
62 | |||
63 | #ifndef BOOTLOADER | ||
64 | if (hold_button != hold_button_old) | ||
65 | backlight_hold_changed(hold_button); | ||
66 | #endif | ||
67 | |||
68 | if (!hold_button) | ||
69 | { | ||
70 | |||
71 | /* simple moving average filter with 4 item window */ | ||
72 | button_filter[index&0x03] = adc_scan(ADC_BUTTONS); | ||
73 | index++; | ||
74 | |||
75 | data = (button_filter[0]+button_filter[1] \ | ||
76 | +button_filter[2]+button_filter[3])>>2; | ||
77 | |||
78 | |||
79 | if (data < 2250) // valid button | ||
80 | { | ||
81 | if (data < 900) /* middle */ | ||
82 | { | ||
83 | if (data < 500) | ||
84 | { | ||
85 | if (data > 200) | ||
86 | /* 200 - 500 */ | ||
87 | btn = BUTTON_REC; | ||
88 | } | ||
89 | else /* 900 - 500 */ | ||
90 | btn = BUTTON_VOL_DOWN; | ||
91 | } | ||
92 | else /* 2250 - 900 */ | ||
93 | { | ||
94 | if (data < 1600) | ||
95 | { | ||
96 | /* 1600 - 900 */ | ||
97 | if (data < 1200) | ||
98 | /* 1200 - 900 */ | ||
99 | btn = BUTTON_VOL_UP; | ||
100 | else /* 1600 - 1200 */ | ||
101 | btn = BUTTON_NEXT; | ||
102 | } | ||
103 | else /* 1600 - 2250 */ | ||
104 | { | ||
105 | if (data < 1900) | ||
106 | /* 1900 - 1600 */ | ||
107 | btn = BUTTON_PREV; | ||
108 | else /* 1900 - 2250 */ | ||
109 | btn = BUTTON_SELECT; | ||
110 | } | ||
111 | } | ||
112 | } | ||
113 | } | ||
114 | |||
115 | |||
116 | data = GPIO1_READ; | ||
117 | |||
118 | /* GPIO56 active high main PLAY/PAUSE/ON */ | ||
119 | if (!hold_button && ((data & (1<<24)))) | ||
120 | btn |= BUTTON_PLAY; | ||
121 | |||
122 | return btn; | ||
123 | } | ||