0dde25e8 |
1 | /* |
1e3e41a2 |
2 | Copyright 2011,2012,2013 Jun Wako <wakojun@gmail.com> |
0dde25e8 |
3 | |
4 | This program is free software: you can redistribute it and/or modify |
5 | it under the terms of the GNU General Public License as published by |
6 | the Free Software Foundation, either version 2 of the License, or |
7 | (at your option) any later version. |
8 | |
9 | This program is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
12 | GNU General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU General Public License |
15 | along with this program. If not, see <http://www.gnu.org/licenses/>. |
16 | */ |
17 | |
acc974c6 |
18 | #ifndef KEYBOARD_H |
19 | #define KEYBOARD_H |
20 | |
4ae979f6 |
21 | #include <stdbool.h> |
9a938eec |
22 | #include <stdint.h> |
23 | |
acc974c6 |
24 | |
c5060ea8 |
25 | #ifdef __cplusplus |
26 | extern "C" { |
27 | #endif |
4ae979f6 |
28 | |
1e3e41a2 |
29 | /* key matrix position */ |
4ae979f6 |
30 | typedef struct { |
4ae979f6 |
31 | uint8_t col; |
ee7ce433 |
32 | uint8_t row; |
ee7ce433 |
33 | } key_t; |
34 | |
1e3e41a2 |
35 | /* key event */ |
4ae979f6 |
36 | typedef struct { |
f71a5217 |
37 | key_t key; |
4ae979f6 |
38 | bool pressed; |
411de9cc |
39 | uint16_t time; |
4ae979f6 |
40 | } keyevent_t; |
41 | |
1e3e41a2 |
42 | /* equivalent test of key_t */ |
c4421f58 |
43 | #define KEYEQ(keya, keyb) ((keya).row == (keyb).row && (keya).col == (keyb).col) |
1e3e41a2 |
44 | |
8819cf6b |
45 | /* Rules for No Event: |
46 | * 1) (time == 0) to handle (keyevent_t){} as empty event |
47 | * 2) Matrix(255, 255) to make TICK event available |
48 | */ |
49 | static inline bool IS_NOEVENT(keyevent_t event) { return event.time == 0 || (event.key.row == 255 && event.key.col == 255); } |
50 | static inline bool IS_PRESSED(keyevent_t event) { return (!IS_NOEVENT(event) && event.pressed); } |
51 | static inline bool IS_RELEASED(keyevent_t event) { return (!IS_NOEVENT(event) && !event.pressed); } |
52 | |
53 | /* Tick event */ |
ef873791 |
54 | #define TICK (keyevent_t){ \ |
c4421f58 |
55 | .key = (key_t){ .row = 255, .col = 255 }, \ |
ef873791 |
56 | .pressed = false, \ |
1e3e41a2 |
57 | .time = (timer_read() | 1) \ |
ef873791 |
58 | } |
f609712d |
59 | |
4ae979f6 |
60 | |
2b8cd88a |
61 | void keyboard_init(void); |
4ae979f6 |
62 | void keyboard_task(void); |
9a938eec |
63 | void keyboard_set_leds(uint8_t leds); |
4ae979f6 |
64 | |
c5060ea8 |
65 | #ifdef __cplusplus |
66 | } |
67 | #endif |
acc974c6 |
68 | |
69 | #endif |