75 lines
1.9 KiB
C
75 lines
1.9 KiB
C
/*
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Copyright 2011,2012,2013 Jun Wako <wakojun@gmail.com>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef KEYBOARD_H
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#define KEYBOARD_H
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#include <stdbool.h>
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* key matrix position */
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typedef struct {
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uint8_t col;
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uint8_t row;
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} keypos_t;
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typedef union {
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uint16_t raw;
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keypos_t pos;
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} key_t;
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/* key event */
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typedef struct {
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key_t key;
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bool pressed;
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uint16_t time;
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} keyevent_t;
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/* equivalent test of key_t */
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#define KEYEQ(keya, keyb) ((keya).raw == (keyb).raw)
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/* (time == 0) means no event and assumes matrix has no 255 line. */
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#define IS_NOEVENT(event) ((event).time == 0 || ((event).key.pos.row == 255 && (event).key.pos.col == 255))
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#define NOEVENT (keyevent_t){ \
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.key.pos = (keypos_t){ .row = 255, .col = 255 }, \
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.pressed = false, \
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.time = 0 \
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}
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/* tick event */
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#define TICK (keyevent_t){ \
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.key.pos = (keypos_t){ .row = 255, .col = 255 }, \
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.pressed = false, \
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.time = (timer_read() | 1) \
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}
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void keyboard_init(void);
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void keyboard_task(void);
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void keyboard_set_leds(uint8_t leds);
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#ifdef __cplusplus
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}
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#endif
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#endif
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