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- /*
- Copyright 2011,2012,2013 Jun Wako <[email protected]>
-
- This program is free software: you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation, either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
- #ifndef KEYBOARD_H
- #define KEYBOARD_H
-
- #include <stdbool.h>
- #include <stdint.h>
-
-
- #ifdef __cplusplus
- extern "C" {
- #endif
-
- /* key matrix position */
- typedef struct {
- uint8_t col;
- uint8_t row;
- } keypos_t;
-
- /* key event */
- typedef struct {
- keypos_t key;
- bool pressed;
- uint16_t time;
- } keyevent_t;
-
- /* equivalent test of keypos_t */
- #define KEYEQ(keya, keyb) ((keya).row == (keyb).row && (keya).col == (keyb).col)
-
- /* Rules for No Event:
- * 1) (time == 0) to handle (keyevent_t){} as empty event
- * 2) Matrix(255, 255) to make TICK event available
- */
- static inline bool IS_NOEVENT(keyevent_t event) { return event.time == 0 || (event.key.row == 255 && event.key.col == 255); }
- static inline bool IS_PRESSED(keyevent_t event) { return (!IS_NOEVENT(event) && event.pressed); }
- static inline bool IS_RELEASED(keyevent_t event) { return (!IS_NOEVENT(event) && !event.pressed); }
-
- /* Tick event */
- #define TICK (keyevent_t){ \
- .key = (keypos_t){ .row = 255, .col = 255 }, \
- .pressed = false, \
- .time = (timer_read() | 1) \
- }
-
-
- /* it runs once at early stage of startup before keyboard_init. */
- void keyboard_setup(void);
- /* it runs once after initializing host side protocol, debug and MCU peripherals. */
- void keyboard_init(void);
- /* it runs repeatedly in main loop */
- void keyboard_task(void);
- /* it runs when host LED status is updated */
- void keyboard_set_leds(uint8_t leds);
-
- #ifdef __cplusplus
- }
- #endif
-
- #endif
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