keys_state.h

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/*
 * Copyright (c) 2025 Nordic Semiconductor ASA
 *
 * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
 */
 
#ifndef _KEYS_STATE_H_
#define _KEYS_STATE_H_
 
#ifdef __cplusplus
extern "C" {
#endif
 
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
 
#define KEYS_MAX_CNT    CONFIG_DESKTOP_KEYS_STATE_KEY_CNT_MAX
 
struct active_key {
        uint16_t id; 
        uint16_t press_cnt; 
};
 
struct keys_state {
        struct active_key keys[KEYS_MAX_CNT]; 
        uint8_t cnt; 
        uint8_t cnt_max; 
};
 
void keys_state_init(struct keys_state *ks, uint8_t key_cnt_max);
 
int keys_state_key_update(struct keys_state *ks, uint16_t key_id, bool pressed, bool *ks_changed);
 
void keys_state_clear(struct keys_state *ks);
 
size_t keys_state_keys_get(const struct keys_state *ks, uint16_t *res, size_t res_size);
 
#ifdef __cplusplus
}
#endif
 
#endif /*_KEYS_STATE_H_ */