[jackhill/qmk/firmware.git] / tmk_core / common / action_util.c

/*
Copyright 2013 Jun Wako <wakojun@gmail.com>

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/>.
*/
#include "host.h"
#include "report.h"
#include "debug.h"
#include "action_util.h"
#include "action_layer.h"
#include "timer.h"

static inline void add_key_byte(uint8_t code);
static inline void del_key_byte(uint8_t code);
#ifdef NKRO_ENABLE
static inline void add_key_bit(uint8_t code);
static inline void del_key_bit(uint8_t code);
#endif

static uint8_t real_mods = 0;
static uint8_t weak_mods = 0;
static uint8_t macro_mods = 0;

#ifdef USB_6KRO_ENABLE
#define RO_ADD(a, b) ((a + b) % KEYBOARD_REPORT_KEYS)
#define RO_SUB(a, b) ((a - b + KEYBOARD_REPORT_KEYS) % KEYBOARD_REPORT_KEYS)
#define RO_INC(a) RO_ADD(a, 1)
#define RO_DEC(a) RO_SUB(a, 1)
static int8_t cb_head = 0;
static int8_t cb_tail = 0;
static int8_t cb_count = 0;
#endif

// TODO: pointer variable is not needed
//report_keyboard_t keyboard_report = {};
report_keyboard_t *keyboard_report = &(report_keyboard_t){};

#ifndef NO_ACTION_ONESHOT
static int8_t oneshot_mods = 0;
static int8_t oneshot_locked_mods = 0;
int8_t get_oneshot_locked_mods(void) { return oneshot_locked_mods; }
void set_oneshot_locked_mods(int8_t mods) { oneshot_locked_mods = mods; }
void clear_oneshot_locked_mods(void) { oneshot_locked_mods = 0; }
#if (defined(ONESHOT_TIMEOUT) && (ONESHOT_TIMEOUT > 0))
static int16_t oneshot_time = 0;
inline bool has_oneshot_mods_timed_out() {
  return TIMER_DIFF_16(timer_read(), oneshot_time) >= ONESHOT_TIMEOUT;
}
#endif
#endif

/* oneshot layer */
#ifndef NO_ACTION_ONESHOT
/* oneshot_layer_data bits
* LLLL LSSS
* where:
*   L => are layer bits
*   S => oneshot state bits
*/
static int8_t oneshot_layer_data = 0;

inline uint8_t get_oneshot_layer(void) { return oneshot_layer_data >> 3; }
inline uint8_t get_oneshot_layer_state(void) { return oneshot_layer_data & 0b111; }

#if (defined(ONESHOT_TIMEOUT) && (ONESHOT_TIMEOUT > 0))
static int16_t oneshot_layer_time = 0;
inline bool has_oneshot_layer_timed_out() {
    return TIMER_DIFF_16(timer_read(), oneshot_layer_time) >= ONESHOT_TIMEOUT &&
        !(get_oneshot_layer_state() & ONESHOT_TOGGLED);
}
#endif

/* Oneshot layer */
void set_oneshot_layer(uint8_t layer, uint8_t state)
{
    oneshot_layer_data = layer << 3 | state;
    layer_on(layer);
#if (defined(ONESHOT_TIMEOUT) && (ONESHOT_TIMEOUT > 0))
    oneshot_layer_time = timer_read();
#endif
}
void reset_oneshot_layer(void) {
    oneshot_layer_data = 0;
#if (defined(ONESHOT_TIMEOUT) && (ONESHOT_TIMEOUT > 0))
    oneshot_layer_time = 0;
#endif
}
void clear_oneshot_layer_state(oneshot_fullfillment_t state)
{
    uint8_t start_state = oneshot_layer_data;
    oneshot_layer_data &= ~state;
    if (!get_oneshot_layer_state() && start_state != oneshot_layer_data) {
        layer_off(get_oneshot_layer());
#if (defined(ONESHOT_TIMEOUT) && (ONESHOT_TIMEOUT > 0))
    oneshot_layer_time = 0;
#endif
    }
}
bool is_oneshot_layer_active(void)
{
    return get_oneshot_layer_state();
}
#endif

void send_keyboard_report(void) {
    keyboard_report->mods  = real_mods;
    keyboard_report->mods |= weak_mods;
    keyboard_report->mods |= macro_mods;
#ifndef NO_ACTION_ONESHOT
    if (oneshot_mods) {
#if (defined(ONESHOT_TIMEOUT) && (ONESHOT_TIMEOUT > 0))
        if (has_oneshot_mods_timed_out()) {
            dprintf("Oneshot: timeout\n");
            clear_oneshot_mods();
        }
#endif
        keyboard_report->mods |= oneshot_mods;
        if (has_anykey()) {
            clear_oneshot_mods();
        }
    }

#endif
    host_keyboard_send(keyboard_report);
}

/* key */
void add_key(uint8_t key)
{
#ifdef NKRO_ENABLE
    if (keyboard_protocol && keyboard_nkro) {
        add_key_bit(key);
        return;
    }
#endif
    add_key_byte(key);
}

void del_key(uint8_t key)
{
#ifdef NKRO_ENABLE
    if (keyboard_protocol && keyboard_nkro) {
        del_key_bit(key);
        return;
    }
#endif
    del_key_byte(key);
}

void clear_keys(void)
{
    // not clear mods
    for (int8_t i = 1; i < KEYBOARD_REPORT_SIZE; i++) {
        keyboard_report->raw[i] = 0;
    }
}


/* modifier */
uint8_t get_mods(void) { return real_mods; }
void add_mods(uint8_t mods) { real_mods |= mods; }
void del_mods(uint8_t mods) { real_mods &= ~mods; }
void set_mods(uint8_t mods) { real_mods = mods; }
void clear_mods(void) { real_mods = 0; }

/* weak modifier */
uint8_t get_weak_mods(void) { return weak_mods; }
void add_weak_mods(uint8_t mods) { weak_mods |= mods; }
void del_weak_mods(uint8_t mods) { weak_mods &= ~mods; }
void set_weak_mods(uint8_t mods) { weak_mods = mods; }
void clear_weak_mods(void) { weak_mods = 0; }

/* macro modifier */
uint8_t get_macro_mods(void) { return macro_mods; }
void add_macro_mods(uint8_t mods) { macro_mods |= mods; }
void del_macro_mods(uint8_t mods) { macro_mods &= ~mods; }
void set_macro_mods(uint8_t mods) { macro_mods = mods; }
void clear_macro_mods(void) { macro_mods = 0; }

/* Oneshot modifier */
#ifndef NO_ACTION_ONESHOT
void set_oneshot_mods(uint8_t mods)
{
    oneshot_mods = mods;
#if (defined(ONESHOT_TIMEOUT) && (ONESHOT_TIMEOUT > 0))
    oneshot_time = timer_read();
#endif
}
void clear_oneshot_mods(void)
{
    oneshot_mods = 0;
#if (defined(ONESHOT_TIMEOUT) && (ONESHOT_TIMEOUT > 0))
    oneshot_time = 0;
#endif
}
uint8_t get_oneshot_mods(void)
{
    return oneshot_mods;
}
#endif

/*
 * inspect keyboard state
 */
uint8_t has_anykey(void)
{
    uint8_t cnt = 0;
    for (uint8_t i = 1; i < KEYBOARD_REPORT_SIZE; i++) {
        if (keyboard_report->raw[i])
            cnt++;
    }
    return cnt;
}

uint8_t has_anymod(void)
{
    return bitpop(real_mods);
}

uint8_t get_first_key(void)
{
#ifdef NKRO_ENABLE
    if (keyboard_protocol && keyboard_nkro) {
        uint8_t i = 0;
        for (; i < KEYBOARD_REPORT_BITS && !keyboard_report->nkro.bits[i]; i++)
            ;
        return i<<3 | biton(keyboard_report->nkro.bits[i]);
    }
#endif
#ifdef USB_6KRO_ENABLE
    uint8_t i = cb_head;
    do {
        if (keyboard_report->keys[i] != 0) {
            break;
        }
        i = RO_INC(i);
    } while (i != cb_tail);
    return keyboard_report->keys[i];
#else
    return keyboard_report->keys[0];
#endif
}


/* local functions */
static inline void add_key_byte(uint8_t code)
{
#ifdef USB_6KRO_ENABLE
    int8_t i = cb_head;
    int8_t empty = -1;
    if (cb_count) {
        do {
            if (keyboard_report->keys[i] == code) {
                return;
            }
            if (empty == -1 && keyboard_report->keys[i] == 0) {
                empty = i;
            }
            i = RO_INC(i);
        } while (i != cb_tail);
        if (i == cb_tail) {
            if (cb_tail == cb_head) {
                // buffer is full
                if (empty == -1) {
                    // pop head when has no empty space
                    cb_head = RO_INC(cb_head);
                    cb_count--;
                }
                else {
                    // left shift when has empty space
                    uint8_t offset = 1;
                    i = RO_INC(empty);
                    do {
                        if (keyboard_report->keys[i] != 0) {
                            keyboard_report->keys[empty] = keyboard_report->keys[i];
                            keyboard_report->keys[i] = 0;
                            empty = RO_INC(empty);
                        }
                        else {
                            offset++;
                        }
                        i = RO_INC(i);
                    } while (i != cb_tail);
                    cb_tail = RO_SUB(cb_tail, offset);
                }
            }
        }
    }
    // add to tail
    keyboard_report->keys[cb_tail] = code;
    cb_tail = RO_INC(cb_tail);
    cb_count++;
#else
    int8_t i = 0;
    int8_t empty = -1;
    for (; i < KEYBOARD_REPORT_KEYS; i++) {
        if (keyboard_report->keys[i] == code) {
            break;
        }
        if (empty == -1 && keyboard_report->keys[i] == 0) {
            empty = i;
        }
    }
    if (i == KEYBOARD_REPORT_KEYS) {
        if (empty != -1) {
            keyboard_report->keys[empty] = code;
        }
    }
#endif
}

static inline void del_key_byte(uint8_t code)
{
#ifdef USB_6KRO_ENABLE
    uint8_t i = cb_head;
    if (cb_count) {
        do {
            if (keyboard_report->keys[i] == code) {
                keyboard_report->keys[i] = 0;
                cb_count--;
                if (cb_count == 0) {
                    // reset head and tail
                    cb_tail = cb_head = 0;
                }
                if (i == RO_DEC(cb_tail)) {
                    // left shift when next to tail
                    do {
                        cb_tail = RO_DEC(cb_tail);
                        if (keyboard_report->keys[RO_DEC(cb_tail)] != 0) {
                            break;
                        }
                    } while (cb_tail != cb_head);
                }
                break;
            }
            i = RO_INC(i);
        } while (i != cb_tail);
    }
#else
    for (uint8_t i = 0; i < KEYBOARD_REPORT_KEYS; i++) {
        if (keyboard_report->keys[i] == code) {
            keyboard_report->keys[i] = 0;
        }
    }
#endif
}

#ifdef NKRO_ENABLE
static inline void add_key_bit(uint8_t code)
{
    if ((code>>3) < KEYBOARD_REPORT_BITS) {
        keyboard_report->nkro.bits[code>>3] |= 1<<(code&7);
    } else {
        dprintf("add_key_bit: can't add: %02X\n", code);
    }
}

static inline void del_key_bit(uint8_t code)
{
    if ((code>>3) < KEYBOARD_REPORT_BITS) {
        keyboard_report->nkro.bits[code>>3] &= ~(1<<(code&7));
    } else {
        dprintf("del_key_bit: can't del: %02X\n", code);
    }
}
#endif
Commit	Line	Data
a074364c	1	/*
	2	Copyright 2013 Jun Wako <wakojun@gmail.com>
	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	#include "host.h"
	18	#include "report.h"
	19	#include "debug.h"
	20	#include "action_util.h"
74e97eef	21	#include "action_layer.h"
a074364c	22	#include "timer.h"
	23
	24	static inline void add_key_byte(uint8_t code);
	25	static inline void del_key_byte(uint8_t code);
	26	#ifdef NKRO_ENABLE
	27	static inline void add_key_bit(uint8_t code);
	28	static inline void del_key_bit(uint8_t code);
	29	#endif
	30
	31	static uint8_t real_mods = 0;
	32	static uint8_t weak_mods = 0;
b7a81f04	33	static uint8_t macro_mods = 0;
a074364c	34
	35	#ifdef USB_6KRO_ENABLE
	36	#define RO_ADD(a, b) ((a + b) % KEYBOARD_REPORT_KEYS)
	37	#define RO_SUB(a, b) ((a - b + KEYBOARD_REPORT_KEYS) % KEYBOARD_REPORT_KEYS)
	38	#define RO_INC(a) RO_ADD(a, 1)
	39	#define RO_DEC(a) RO_SUB(a, 1)
	40	static int8_t cb_head = 0;
	41	static int8_t cb_tail = 0;
	42	static int8_t cb_count = 0;
	43	#endif
	44
	45	// TODO: pointer variable is not needed
	46	//report_keyboard_t keyboard_report = {};
	47	report_keyboard_t *keyboard_report = &(report_keyboard_t){};
	48
	49	#ifndef NO_ACTION_ONESHOT
	50	static int8_t oneshot_mods = 0;
74e97eef TA	51	static int8_t oneshot_locked_mods = 0;
	52	int8_t get_oneshot_locked_mods(void) { return oneshot_locked_mods; }
	53	void set_oneshot_locked_mods(int8_t mods) { oneshot_locked_mods = mods; }
	54	void clear_oneshot_locked_mods(void) { oneshot_locked_mods = 0; }
a074364c	55	#if (defined(ONESHOT_TIMEOUT) && (ONESHOT_TIMEOUT > 0))
a074364c	56	static int16_t oneshot_time = 0;
74e97eef TA	57	inline bool has_oneshot_mods_timed_out() {
	58	return TIMER_DIFF_16(timer_read(), oneshot_time) >= ONESHOT_TIMEOUT;
	59	}
a074364c	60	#endif
	61	#endif
	62
74e97eef TA	63	/* oneshot layer */
	64	#ifndef NO_ACTION_ONESHOT
	65	/* oneshot_layer_data bits
	66	* LLLL LSSS
	67	* where:
	68	* L => are layer bits
	69	* S => oneshot state bits
	70	*/
	71	static int8_t oneshot_layer_data = 0;
	72
	73	inline uint8_t get_oneshot_layer(void) { return oneshot_layer_data >> 3; }
	74	inline uint8_t get_oneshot_layer_state(void) { return oneshot_layer_data & 0b111; }
	75
	76	#if (defined(ONESHOT_TIMEOUT) && (ONESHOT_TIMEOUT > 0))
	77	static int16_t oneshot_layer_time = 0;
	78	inline bool has_oneshot_layer_timed_out() {
	79	return TIMER_DIFF_16(timer_read(), oneshot_layer_time) >= ONESHOT_TIMEOUT &&
	80	!(get_oneshot_layer_state() & ONESHOT_TOGGLED);
	81	}
	82	#endif
	83
	84	/* Oneshot layer */
	85	void set_oneshot_layer(uint8_t layer, uint8_t state)
	86	{
	87	oneshot_layer_data = layer << 3 \| state;
	88	layer_on(layer);
	89	#if (defined(ONESHOT_TIMEOUT) && (ONESHOT_TIMEOUT > 0))
	90	oneshot_layer_time = timer_read();
	91	#endif
	92	}
	93	void reset_oneshot_layer(void) {
	94	oneshot_layer_data = 0;
	95	#if (defined(ONESHOT_TIMEOUT) && (ONESHOT_TIMEOUT > 0))
	96	oneshot_layer_time = 0;
	97	#endif
	98	}
	99	void clear_oneshot_layer_state(oneshot_fullfillment_t state)
	100	{
	101	uint8_t start_state = oneshot_layer_data;
	102	oneshot_layer_data &= ~state;
	103	if (!get_oneshot_layer_state() && start_state != oneshot_layer_data) {
	104	layer_off(get_oneshot_layer());
	105	#if (defined(ONESHOT_TIMEOUT) && (ONESHOT_TIMEOUT > 0))
	106	oneshot_layer_time = 0;
	107	#endif
	108	}
	109	}
	110	bool is_oneshot_layer_active(void)
	111	{
	112	return get_oneshot_layer_state();
	113	}
	114	#endif
a074364c	115
	116	void send_keyboard_report(void) {
	117	keyboard_report->mods = real_mods;
	118	keyboard_report->mods \|= weak_mods;
b7a81f04	119	keyboard_report->mods \|= macro_mods;
a074364c	120	#ifndef NO_ACTION_ONESHOT
	121	if (oneshot_mods) {
	122	#if (defined(ONESHOT_TIMEOUT) && (ONESHOT_TIMEOUT > 0))
74e97eef	123	if (has_oneshot_mods_timed_out()) {
a074364c	124	dprintf("Oneshot: timeout\n");
	125	clear_oneshot_mods();
	126	}
	127	#endif
	128	keyboard_report->mods \|= oneshot_mods;
	129	if (has_anykey()) {
	130	clear_oneshot_mods();
	131	}
	132	}
74e97eef	133
a074364c	134	#endif
	135	host_keyboard_send(keyboard_report);
	136	}
	137
	138	/* key */
	139	void add_key(uint8_t key)
	140	{
	141	#ifdef NKRO_ENABLE
ed9766a7	142	if (keyboard_protocol && keyboard_nkro) {
a074364c	143	add_key_bit(key);
	144	return;
	145	}
	146	#endif
	147	add_key_byte(key);
	148	}
	149
	150	void del_key(uint8_t key)
	151	{
	152	#ifdef NKRO_ENABLE
ed9766a7	153	if (keyboard_protocol && keyboard_nkro) {
a074364c	154	del_key_bit(key);
	155	return;
	156	}
	157	#endif
	158	del_key_byte(key);
	159	}
	160
	161	void clear_keys(void)
	162	{
	163	// not clear mods
	164	for (int8_t i = 1; i < KEYBOARD_REPORT_SIZE; i++) {
	165	keyboard_report->raw[i] = 0;
	166	}
	167	}
	168
	169
	170	/* modifier */
	171	uint8_t get_mods(void) { return real_mods; }
	172	void add_mods(uint8_t mods) { real_mods \|= mods; }
	173	void del_mods(uint8_t mods) { real_mods &= ~mods; }
	174	void set_mods(uint8_t mods) { real_mods = mods; }
	175	void clear_mods(void) { real_mods = 0; }
	176
	177	/* weak modifier */
	178	uint8_t get_weak_mods(void) { return weak_mods; }
	179	void add_weak_mods(uint8_t mods) { weak_mods \|= mods; }
	180	void del_weak_mods(uint8_t mods) { weak_mods &= ~mods; }
	181	void set_weak_mods(uint8_t mods) { weak_mods = mods; }
	182	void clear_weak_mods(void) { weak_mods = 0; }
	183
b7a81f04 DL	184	/* macro modifier */
	185	uint8_t get_macro_mods(void) { return macro_mods; }
	186	void add_macro_mods(uint8_t mods) { macro_mods \|= mods; }
	187	void del_macro_mods(uint8_t mods) { macro_mods &= ~mods; }
	188	void set_macro_mods(uint8_t mods) { macro_mods = mods; }
	189	void clear_macro_mods(void) { macro_mods = 0; }
	190
a074364c	191	/* Oneshot modifier */
	192	#ifndef NO_ACTION_ONESHOT
	193	void set_oneshot_mods(uint8_t mods)
	194	{
	195	oneshot_mods = mods;
	196	#if (defined(ONESHOT_TIMEOUT) && (ONESHOT_TIMEOUT > 0))
	197	oneshot_time = timer_read();
	198	#endif
	199	}
	200	void clear_oneshot_mods(void)
	201	{
	202	oneshot_mods = 0;
	203	#if (defined(ONESHOT_TIMEOUT) && (ONESHOT_TIMEOUT > 0))
	204	oneshot_time = 0;
	205	#endif
	206	}
74e97eef TA	207	uint8_t get_oneshot_mods(void)
	208	{
	209	return oneshot_mods;
	210	}
a074364c	211	#endif
a074364c	212
a074364c	213	/*
	214	* inspect keyboard state
	215	*/
	216	uint8_t has_anykey(void)
	217	{
	218	uint8_t cnt = 0;
	219	for (uint8_t i = 1; i < KEYBOARD_REPORT_SIZE; i++) {
	220	if (keyboard_report->raw[i])
	221	cnt++;
	222	}
	223	return cnt;
	224	}
	225
	226	uint8_t has_anymod(void)
	227	{
	228	return bitpop(real_mods);
	229	}
	230
	231	uint8_t get_first_key(void)
	232	{
	233	#ifdef NKRO_ENABLE
ed9766a7	234	if (keyboard_protocol && keyboard_nkro) {
a074364c	235	uint8_t i = 0;
	236	for (; i < KEYBOARD_REPORT_BITS && !keyboard_report->nkro.bits[i]; i++)
	237	;
	238	return i<<3 \| biton(keyboard_report->nkro.bits[i]);
	239	}
	240	#endif
	241	#ifdef USB_6KRO_ENABLE
	242	uint8_t i = cb_head;
	243	do {
	244	if (keyboard_report->keys[i] != 0) {
	245	break;
	246	}
	247	i = RO_INC(i);
	248	} while (i != cb_tail);
	249	return keyboard_report->keys[i];
	250	#else
	251	return keyboard_report->keys[0];
	252	#endif
	253	}
	254
	255
	256
	257	/* local functions */
	258	static inline void add_key_byte(uint8_t code)
	259	{
	260	#ifdef USB_6KRO_ENABLE
	261	int8_t i = cb_head;
	262	int8_t empty = -1;
	263	if (cb_count) {
	264	do {
	265	if (keyboard_report->keys[i] == code) {
	266	return;
	267	}
	268	if (empty == -1 && keyboard_report->keys[i] == 0) {
	269	empty = i;
	270	}
	271	i = RO_INC(i);
	272	} while (i != cb_tail);
	273	if (i == cb_tail) {
	274	if (cb_tail == cb_head) {
	275	// buffer is full
	276	if (empty == -1) {
	277	// pop head when has no empty space
	278	cb_head = RO_INC(cb_head);
	279	cb_count--;
	280	}
	281	else {
	282	// left shift when has empty space
	283	uint8_t offset = 1;
	284	i = RO_INC(empty);
	285	do {
	286	if (keyboard_report->keys[i] != 0) {
	287	keyboard_report->keys[empty] = keyboard_report->keys[i];
	288	keyboard_report->keys[i] = 0;
	289	empty = RO_INC(empty);
	290	}
	291	else {
	292	offset++;
	293	}
	294	i = RO_INC(i);
	295	} while (i != cb_tail);
	296	cb_tail = RO_SUB(cb_tail, offset);
	297	}
	298	}
299	}
300	}
301	// add to tail
302	keyboard_report->keys[cb_tail] = code;
303	cb_tail = RO_INC(cb_tail);
304	cb_count++;
305	#else
306	int8_t i = 0;
307	int8_t empty = -1;
308	for (; i < KEYBOARD_REPORT_KEYS; i++) {
309	if (keyboard_report->keys[i] == code) {
310	break;
311	}
312	if (empty == -1 && keyboard_report->keys[i] == 0) {
313	empty = i;
314	}
315	}
316	if (i == KEYBOARD_REPORT_KEYS) {
317	if (empty != -1) {
318	keyboard_report->keys[empty] = code;
319	}
320	}
321	#endif
322	}
323
324	static inline void del_key_byte(uint8_t code)
325	{
326	#ifdef USB_6KRO_ENABLE
327	uint8_t i = cb_head;
328	if (cb_count) {
329	do {
330	if (keyboard_report->keys[i] == code) {
331	keyboard_report->keys[i] = 0;
332	cb_count--;
333	if (cb_count == 0) {
334	// reset head and tail
335	cb_tail = cb_head = 0;
336	}
337	if (i == RO_DEC(cb_tail)) {
338	// left shift when next to tail
339	do {
340	cb_tail = RO_DEC(cb_tail);
341	if (keyboard_report->keys[RO_DEC(cb_tail)] != 0) {
342	break;
343	}
344	} while (cb_tail != cb_head);
345	}
346	break;
347	}
348	i = RO_INC(i);
349	} while (i != cb_tail);
350	}
351	#else
352	for (uint8_t i = 0; i < KEYBOARD_REPORT_KEYS; i++) {
353	if (keyboard_report->keys[i] == code) {
354	keyboard_report->keys[i] = 0;
355	}
356	}
357	#endif
358	}
359
360	#ifdef NKRO_ENABLE
361	static inline void add_key_bit(uint8_t code)
362	{
363	if ((code>>3) < KEYBOARD_REPORT_BITS) {
364	keyboard_report->nkro.bits[code>>3] \|= 1<<(code&7);
365	} else {
366	dprintf("add_key_bit: can't add: %02X\n", code);
367	}
368	}
369
370	static inline void del_key_bit(uint8_t code)
371	{
372	if ((code>>3) < KEYBOARD_REPORT_BITS) {
373	keyboard_report->nkro.bits[code>>3] &= ~(1<<(code&7));
374	} else {
375	dprintf("del_key_bit: can't del: %02X\n", code);
376	}
377	}
378	#endif