qmk-dactyl-manuform-a/common/action.c

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/*
Copyright 2012,2013 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/>.
*/
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#include "host.h"
#include "timer.h"
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#include "keymap.h"
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#include "keycode.h"
#include "keyboard.h"
#include "mousekey.h"
#include "command.h"
#include "util.h"
#include "debug.h"
#include "action.h"
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static void process_action(keyrecord_t *record);
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static bool process_tapping(keyrecord_t *record);
static void waiting_buffer_scan_tap(void);
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static void debug_event(keyevent_t event);
static void debug_record(keyrecord_t record);
static void debug_action(action_t action);
static void debug_tapping_key(void);
static void debug_waiting_buffer(void);
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/*
* Tapping
*/
/* period of tapping(ms) */
#ifndef TAPPING_TERM
#define TAPPING_TERM 200
#endif
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/* tap count needed for toggling a feature */
#ifndef TAPPING_TOGGLE
#define TAPPING_TOGGLE 5
#endif
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/* stores a key event of current tap. */
static keyrecord_t tapping_key = {};
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#define IS_TAPPING() !IS_NOEVENT(tapping_key.event)
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#define IS_TAPPING_PRESSED() (IS_TAPPING() && tapping_key.event.pressed)
#define IS_TAPPING_RELEASED() (IS_TAPPING() && !tapping_key.event.pressed)
#define IS_TAPPING_KEY(k) (IS_TAPPING() && KEYEQ(tapping_key.event.key, (k)))
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#define WITHIN_TAPPING_TERM(e) (TIMER_DIFF_16(e.time, tapping_key.event.time) < TAPPING_TERM)
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/*
* Waiting buffer
*
* stores key events waiting for settling current tap.
*/
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#define WAITING_BUFFER_SIZE 8
static keyrecord_t waiting_buffer[WAITING_BUFFER_SIZE] = {};
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/* point to empty cell to enq */
static uint8_t waiting_buffer_head = 0;
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/* point to the oldest data cell to deq */
static uint8_t waiting_buffer_tail = 0;
static bool waiting_buffer_enq(keyrecord_t record)
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{
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if (IS_NOEVENT(record.event)) {
return true;
}
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if ((waiting_buffer_head + 1) % WAITING_BUFFER_SIZE == waiting_buffer_tail) {
debug("waiting_buffer_enq: Over flow.\n");
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return false;
}
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waiting_buffer[waiting_buffer_head] = record;
waiting_buffer_head = (waiting_buffer_head + 1) % WAITING_BUFFER_SIZE;
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debug("waiting_buffer_enq: "); debug_waiting_buffer();
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return true;
}
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static void waiting_buffer_clear(void)
{
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waiting_buffer_head = 0;
waiting_buffer_tail = 0;
}
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#if TAPPING_TERM >= 500
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static bool waiting_buffer_typed(keyevent_t event)
{
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for (uint8_t i = waiting_buffer_tail; i != waiting_buffer_head; i = (i + 1) % WAITING_BUFFER_SIZE) {
if (KEYEQ(event.key, waiting_buffer[i].event.key) && event.pressed != waiting_buffer[i].event.pressed) {
return true;
}
}
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return false;
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}
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#endif
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bool waiting_buffer_has_anykey_pressed(void)
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{
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for (uint8_t i = waiting_buffer_tail; i != waiting_buffer_head; i = (i + 1) % WAITING_BUFFER_SIZE) {
if (waiting_buffer[i].event.pressed) return true;
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}
return false;
}
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/* Oneshot modifier
*
* Problem: Want to capitalize like 'The' but the result tends to be 'THe'.
* Solution: Oneshot modifier have its effect on only one key coming next.
* Tap Shift, then type 't', 'h' and 'e'. Not need to hold Shift key.
*
* Hold: works as normal modifier.
* Tap: one shot modifier.
* 2 Tap: cancel one shot modifier.
* 5-Tap: toggles enable/disable oneshot feature.
*/
static struct {
uint8_t mods;
uint8_t time;
bool ready;
bool disabled;
} oneshot_state;
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static void oneshot_start(uint8_t mods, uint16_t time)
{
oneshot_state.mods = mods;
oneshot_state.time = time;
oneshot_state.ready = true;
}
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static void oneshot_cancel(void)
{
oneshot_state.mods = 0;
oneshot_state.time = 0;
oneshot_state.ready = false;
}
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static void oneshot_toggle(void)
{
oneshot_state.disabled = !oneshot_state.disabled;
}
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void action_exec(keyevent_t event)
{
if (!IS_NOEVENT(event)) {
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debug("\n---- action_exec: start -----\n");
debug("EVENT: "); debug_event(event); debug("\n");
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}
keyrecord_t record = { .event = event };
// pre-process on tapping
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if (process_tapping(&record)) {
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if (!IS_NOEVENT(record.event)) {
debug("processed: "); debug_record(record); debug("\n");
}
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} else {
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// enqueue
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if (!waiting_buffer_enq(record)) {
// clear all in case of overflow.
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debug("OVERFLOW: CLEAR ALL STATES\n");
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clear_keyboard();
waiting_buffer_clear();
tapping_key = (keyrecord_t){};
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}
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}
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// process waiting_buffer
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if (!IS_NOEVENT(event) && waiting_buffer_head != waiting_buffer_tail) {
debug("---- action_exec: process waiting_buffer -----\n");
}
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for (; waiting_buffer_tail != waiting_buffer_head; waiting_buffer_tail = (waiting_buffer_tail + 1) % WAITING_BUFFER_SIZE) {
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if (process_tapping(&waiting_buffer[waiting_buffer_tail])) {
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debug("processed: waiting_buffer["); debug_dec(waiting_buffer_tail); debug("] = ");
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debug_record(waiting_buffer[waiting_buffer_tail]); debug("\n\n");
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} else {
break;
}
}
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if (!IS_NOEVENT(event)) {
debug("\n");
}
}
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static void process_action(keyrecord_t *record)
{
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keyevent_t event = record->event;
uint8_t tap_count = record->tap_count;
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if (IS_NOEVENT(event)) { return; }
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action_t action = keymap_get_action(current_layer, event.key.pos.row, event.key.pos.col);
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//debug("action: "); debug_hex16(action.code); if (event.pressed) debug("d\n"); else debug("u\n");
debug("ACTION: "); debug_action(action); debug("\n");
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switch (action.kind.id) {
/* Key and Mods */
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case ACT_LMODS:
case ACT_RMODS:
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{
uint8_t mods = (action.kind.id == ACT_LMODS) ? action.key.mods :
action.key.mods<<4;
if (event.pressed) {
uint8_t tmp_mods = host_get_mods();
if (mods) {
host_add_mods(mods);
host_send_keyboard_report();
}
register_code(action.key.code);
if (mods && action.key.code) {
host_set_mods(tmp_mods);
host_send_keyboard_report();
}
} else {
if (mods && !action.key.code) {
host_del_mods(mods);
host_send_keyboard_report();
}
unregister_code(action.key.code);
}
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}
break;
case ACT_LMODS_TAP:
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case ACT_RMODS_TAP:
{
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uint8_t mods = (action.kind.id == ACT_LMODS_TAP) ? action.key.mods :
action.key.mods<<4;
switch (action.layer.code) {
case 0x00:
// Oneshot modifier
if (event.pressed) {
if (tap_count == 0) {
debug("MODS_TAP: Oneshot: add_mods\n");
add_mods(mods);
}
else if (tap_count == 1) {
debug("MODS_TAP: Oneshot: start\n");
oneshot_start(mods, event.time);
}
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else if (tap_count == TAPPING_TOGGLE) {
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debug("MODS_TAP: Oneshot: toggle\n");
oneshot_toggle();
}
else {
debug("MODS_TAP: Oneshot: cancel&add_mods\n");
// double tap cancels oneshot and works as normal modifier.
oneshot_cancel();
add_mods(mods);
}
} else {
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if (tap_count == 0) {
debug("MODS_TAP: Oneshot: cancel/del_mods\n");
// cancel oneshot by holding.
oneshot_cancel();
del_mods(mods);
}
else if (tap_count == 1) {
debug("MODS_TAP: Oneshot: del_mods\n");
// retain Oneshot
del_mods(mods);
}
else {
debug("MODS_TAP: Oneshot: del_mods\n");
// cancel Mods
del_mods(mods);
}
}
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break;
default:
if (event.pressed) {
if (tap_count > 0) {
if (waiting_buffer_has_anykey_pressed()) {
debug("MODS_TAP: Tap: Cancel: add_mods\n");
// ad hoc: set 0 to cancel tap
record->tap_count = 0;
add_mods(mods);
} else {
debug("MODS_TAP: Tap: register_code\n");
register_code(action.key.code);
}
} else {
debug("MODS_TAP: No tap: add_mods\n");
add_mods(mods);
}
} else {
if (tap_count > 0) {
debug("MODS_TAP: Tap: unregister_code\n");
unregister_code(action.key.code);
} else {
debug("MODS_TAP: No tap: add_mods\n");
del_mods(mods);
}
}
break;
}
}
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break;
/* other HID usage */
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case ACT_USAGE:
#ifdef EXTRAKEY_ENABLE
switch (action.usage.page) {
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case PAGE_SYSTEM:
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if (event.pressed) {
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host_system_send(action.usage.code);
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} else {
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host_system_send(0);
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}
break;
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case PAGE_CONSUMER:
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if (event.pressed) {
host_consumer_send(action.usage.code);
} else {
host_consumer_send(0);
}
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break;
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}
#endif
break;
/* Mouse key */
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case ACT_MOUSEKEY:
#ifdef MOUSEKEY_ENABLE
if (event.pressed) {
mousekey_on(action.key.code);
mousekey_send();
} else {
mousekey_off(action.key.code);
mousekey_send();
}
#endif
break;
/* Layer key */
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case ACT_LAYER:
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switch (action.layer.code) {
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case LAYER_MOMENTARY: /* momentary */
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if (event.pressed) {
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layer_switch(action.layer.val);
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}
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else {
layer_switch(default_layer);
}
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break;
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case LAYER_ON_PRESS:
if (event.pressed) {
layer_switch(action.layer.val);
}
break;
case LAYER_ON_RELEASE:
if (!event.pressed) {
layer_switch(action.layer.val);
}
break;
case LAYER_DEFAULT: /* default layer */
switch (action.layer.val) {
case DEFAULT_ON_BOTH:
layer_switch(default_layer);
break;
case DEFAULT_ON_PRESS:
if (event.pressed) {
layer_switch(default_layer);
}
break;
case DEFAULT_ON_RELEASE:
if (!event.pressed) {
layer_switch(default_layer);
}
break;
}
break;
case LAYER_TAP_TOGGLE: /* switch on hold and toggle on several taps */
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if (event.pressed) {
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if (tap_count < TAPPING_TOGGLE) {
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layer_switch(action.layer.val);
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}
} else {
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if (tap_count >= TAPPING_TOGGLE) {
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debug("LAYER_PRESSED: tap toggle.\n");
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layer_switch(action.layer.val);
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}
}
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break;
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case LAYER_CHANGE_DEFAULT: /* change default layer */
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if (event.pressed) {
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default_layer = action.layer.val;
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layer_switch(default_layer);
}
break;
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default: /* switch layer on hold and key on tap*/
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if (event.pressed) {
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if (tap_count > 0) {
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debug("LAYER_PRESSED: Tap: register_code\n");
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register_code(action.layer.code);
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} else {
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debug("LAYER_PRESSED: No tap: layer_switch\n");
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layer_switch(action.layer.val);
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}
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} else {
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if (tap_count > 0) {
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debug("LAYER_PRESSED: Tap: unregister_code\n");
unregister_code(action.layer.code);
} else {
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//debug("LAYER_PRESSED: No tap: NO ACTION\n");
//TODO: this is ok?
debug("LAYER_PRESSED: No tap: return to default layer\n");
layer_switch(default_layer);
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}
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}
break;
}
break;
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case ACT_LAYER_BIT:
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switch (action.layer.code) {
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case LAYER_MOMENTARY: /* momentary */
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if (event.pressed) {
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layer_switch(current_layer ^ action.layer.val);
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} else {
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layer_switch(current_layer ^ action.layer.val);
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}
break;
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case LAYER_ON_PRESS:
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if (event.pressed) {
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layer_switch(current_layer ^ action.layer.val);
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}
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break;
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case LAYER_ON_RELEASE:
if (!event.pressed) {
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layer_switch(current_layer ^ action.layer.val);
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}
break;
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case LAYER_TAP_TOGGLE: /* switch on hold and toggle on several taps */
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if (event.pressed) {
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if (tap_count < TAPPING_TOGGLE) {
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debug("LAYER_BIT: tap toggle(press).\n");
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layer_switch(current_layer ^ action.layer.val);
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}
} else {
if (tap_count <= TAPPING_TOGGLE) {
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debug("LAYER_BIT: tap toggle(release).\n");
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layer_switch(current_layer ^ action.layer.val);
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}
}
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break;
case 0xFF:
// change default layer
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if (event.pressed) {
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default_layer = current_layer ^ action.layer.val;
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layer_switch(default_layer);
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} else {
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default_layer = current_layer ^ action.layer.val;
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layer_switch(default_layer);
}
break;
default:
// with tap key
if (event.pressed) {
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if (IS_TAPPING_KEY(event.key) && tap_count > 0) {
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debug("LAYER_BIT: Tap: register_code\n");
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register_code(action.layer.code);
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} else {
debug("LAYER_BIT: No tap: layer_switch(bit on)\n");
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layer_switch(current_layer ^ action.layer.val);
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}
} else {
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if (IS_TAPPING_KEY(event.key) && tap_count > 0) {
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debug("LAYER_BIT: Tap: unregister_code\n");
unregister_code(action.layer.code);
} else {
debug("LAYER_BIT: No tap: layer_switch(bit off)\n");
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layer_switch(current_layer ^ action.layer.val);
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}
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}
break;
}
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break;
/* Extentions */
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case ACT_MACRO:
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break;
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case ACT_COMMAND:
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break;
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case ACT_FUNCTION:
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// TODO
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keymap_call_function(record, action.func.id, action.func.opt);
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break;
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default:
break;
}
}
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/* Tapping
*
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* Rule: Tap key is typed(pressed and released) within TAPPING_TERM.
* (without interfering by typing other key)
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*/
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/* return true when key event is processed or consumed. */
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static bool process_tapping(keyrecord_t *keyp)
{
keyevent_t event = keyp->event;
// if tapping
if (IS_TAPPING_PRESSED()) {
if (WITHIN_TAPPING_TERM(event)) {
if (tapping_key.tap_count == 0) {
if (IS_TAPPING_KEY(event.key) && !event.pressed) {
// first tap!
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debug("Tapping: First tap(0->1).\n");
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tapping_key.tap_count = 1;
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debug_tapping_key();
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process_action(&tapping_key);
// enqueue
keyp->tap_count = tapping_key.tap_count;
return false;
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}
#if TAPPING_TERM >= 500
/* This can prevent from typing some tap keys in a row at a time. */
else if (!event.pressed && waiting_buffer_typed(event)) {
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// other key typed. not tap.
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debug("Tapping: End. No tap. Interfered by typing key\n");
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process_action(&tapping_key);
tapping_key = (keyrecord_t){};
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debug_tapping_key();
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// enqueue
return false;
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}
#endif
else {
// other key events shall be enq'd till tapping state settles.
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return false;
}
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}
// tap_count > 0
else {
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if (IS_TAPPING_KEY(event.key) && !event.pressed) {
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debug("Tapping: Tap release("); debug_dec(tapping_key.tap_count); debug(")\n");
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keyp->tap_count = tapping_key.tap_count;
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process_action(keyp);
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tapping_key = *keyp;
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debug_tapping_key();
return true;
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}
else if (is_tap_key(keyp->event.key) && event.pressed) {
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if (tapping_key.tap_count > 1) {
debug("Tapping: Start new tap with releasing last tap(>1).\n");
// unregister key
process_action(&(keyrecord_t){
.tap_count = tapping_key.tap_count,
.event.key = tapping_key.event.key,
.event.time = event.time,
.event.pressed = false
});
} else {
debug("Tapping: Start while last tap(1).\n");
}
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tapping_key = *keyp;
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waiting_buffer_scan_tap();
debug_tapping_key();
return true;
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}
else {
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if (!IS_NOEVENT(keyp->event)) {
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debug("Tapping: key event while last tap(>0).\n");
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}
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process_action(keyp);
return true;
}
}
}
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// after TAPPING_TERM
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else {
if (tapping_key.tap_count == 0) {
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debug("Tapping: End. Timeout. Not tap(0): ");
debug_event(event); debug("\n");
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process_action(&tapping_key);
tapping_key = (keyrecord_t){};
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debug_tapping_key();
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return false;
} else {
if (IS_TAPPING_KEY(event.key) && !event.pressed) {
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debug("Tapping: End. last timeout tap release(>0).");
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keyp->tap_count = tapping_key.tap_count;
process_action(keyp);
tapping_key = (keyrecord_t){};
return true;
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}
else if (is_tap_key(keyp->event.key) && event.pressed) {
if (tapping_key.tap_count > 1) {
debug("Tapping: Start new tap with releasing last timeout tap(>1).\n");
// unregister key
process_action(&(keyrecord_t){
.tap_count = tapping_key.tap_count,
.event.key = tapping_key.event.key,
.event.time = event.time,
.event.pressed = false
});
} else {
debug("Tapping: Start while last timeout tap(1).\n");
}
tapping_key = *keyp;
waiting_buffer_scan_tap();
debug_tapping_key();
return true;
}
else {
if (!IS_NOEVENT(keyp->event)) {
debug("Tapping: key event while last timeout tap(>0).\n");
}
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process_action(keyp);
return true;
}
}
}
} else if (IS_TAPPING_RELEASED()) {
if (WITHIN_TAPPING_TERM(event)) {
if (tapping_key.tap_count > 0 && IS_TAPPING_KEY(event.key) && event.pressed) {
// sequential tap.
keyp->tap_count = tapping_key.tap_count + 1;
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debug("Tapping: Tap press("); debug_dec(keyp->tap_count); debug(")\n");
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process_action(keyp);
tapping_key = *keyp;
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debug_tapping_key();
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return true;
} else if (event.pressed && is_tap_key(event.key)) {
// Sequential tap can be interfered with other tap key.
debug("Tapping: Start with interfering other tap.\n");
tapping_key = *keyp;
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waiting_buffer_scan_tap();
debug_tapping_key();
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return true;
} else {
if (!IS_NOEVENT(keyp->event)) debug("Tapping: other key just after tap.\n");
process_action(keyp);
return true;
}
} else {
// timeout. no sequential tap.
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debug("Tapping: End(Timeout after releasing last tap): ");
debug_event(event); debug("\n");
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tapping_key = (keyrecord_t){};
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debug_tapping_key();
return false;
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}
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}
// not tapping satate
else {
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if (event.pressed && is_tap_key(event.key)) {
debug("Tapping: Start(Press tap key).\n");
tapping_key = *keyp;
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waiting_buffer_scan_tap();
debug_tapping_key();
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return true;
} else {
process_action(keyp);
return true;
}
}
}
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/* scan buffer for tapping */
static void waiting_buffer_scan_tap(void)
{
// tapping already is settled
if (tapping_key.tap_count > 0) return;
// invalid state: tapping_key released && tap_count == 0
if (!tapping_key.event.pressed) return;
for (uint8_t i = waiting_buffer_tail; i != waiting_buffer_head; i = (i + 1) % WAITING_BUFFER_SIZE) {
if (IS_TAPPING_KEY(waiting_buffer[i].event.key) &&
!waiting_buffer[i].event.pressed &&
WITHIN_TAPPING_TERM(waiting_buffer[i].event)) {
tapping_key.tap_count = 1;
waiting_buffer[i].tap_count = 1;
process_action(&tapping_key);
debug("waiting_buffer_scan_tap: found at ["); debug_dec(i); debug("]\n");
debug_waiting_buffer();
return;
}
}
}
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/*
* Utilities for actions.
*/
void register_code(uint8_t code)
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{
if (code == KC_NO) {
return;
}
else if IS_KEY(code) {
// TODO: should push command_proc out of this block?
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if (command_proc(code)) return;
if (oneshot_state.mods && oneshot_state.ready && !oneshot_state.disabled) {
uint8_t tmp_mods = host_get_mods();
host_add_mods(oneshot_state.mods);
host_add_key(code);
host_send_keyboard_report();
host_set_mods(tmp_mods);
oneshot_state.ready = false;
} else {
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host_add_key(code);
host_send_keyboard_report();
}
}
else if IS_MOD(code) {
host_add_mods(MOD_BIT(code));
host_send_keyboard_report();
}
}
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void unregister_code(uint8_t code)
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{
if IS_KEY(code) {
host_del_key(code);
host_send_keyboard_report();
}
else if IS_MOD(code) {
host_del_mods(MOD_BIT(code));
host_send_keyboard_report();
}
}
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void add_mods(uint8_t mods)
{
if (mods) {
host_add_mods(mods);
host_send_keyboard_report();
}
}
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void del_mods(uint8_t mods)
{
if (mods) {
host_del_mods(mods);
host_send_keyboard_report();
}
}
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void set_mods(uint8_t mods)
{
host_set_mods(mods);
host_send_keyboard_report();
}
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void clear_keyboard(void)
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{
host_clear_mods();
clear_keyboard_but_mods();
}
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void clear_keyboard_but_mods(void)
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{
host_clear_keys();
host_send_keyboard_report();
#ifdef MOUSEKEY_ENABLE
mousekey_clear();
mousekey_send();
#endif
#ifdef EXTRAKEY_ENABLE
host_system_send(0);
host_consumer_send(0);
#endif
}
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bool sending_anykey(void)
{
return (host_has_anykey() || host_mouse_in_use() ||
host_last_sysytem_report() || host_last_consumer_report());
}
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void layer_switch(uint8_t new_layer)
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{
if (current_layer != new_layer) {
debug("Layer Switch: "); debug_hex(current_layer);
debug(" -> "); debug_hex(new_layer); debug("\n");
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current_layer = new_layer;
clear_keyboard_but_mods(); // To avoid stuck keys
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// NOTE: update mods with full scan of matrix? if modifier changes between layers
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}
}
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bool is_tap_key(key_t key)
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{
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action_t action = keymap_get_action(current_layer, key.pos.row, key.pos.col);
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switch (action.kind.id) {
case ACT_LMODS_TAP:
case ACT_RMODS_TAP:
return true;
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case ACT_LAYER:
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case ACT_LAYER_BIT:
switch (action.layer.code) {
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case LAYER_MOMENTARY:
case LAYER_ON_PRESS:
case LAYER_ON_RELEASE:
case LAYER_DEFAULT:
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return false;
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case LAYER_TAP_TOGGLE:
default: /* tap key */
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return true;
}
return false;
case ACT_FUNCTION:
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if (action.func.opt & FUNC_TAP) { return true; }
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return false;
}
return false;
}
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/*
* debug print
*/
static void debug_event(keyevent_t event)
{
debug_hex16(event.key.raw);
if (event.pressed) debug("d("); else debug("u(");
debug_dec(event.time); debug(")");
}
static void debug_record(keyrecord_t record)
{
debug_event(record.event); debug(":"); debug_dec(record.tap_count);
}
static void debug_action(action_t action)
{
switch (action.kind.id) {
case ACT_LMODS: debug("ACT_LMODS"); break;
case ACT_RMODS: debug("ACT_RMODS"); break;
case ACT_LMODS_TAP: debug("ACT_LMODS_TAP"); break;
case ACT_RMODS_TAP: debug("ACT_RMODS_TAP"); break;
case ACT_USAGE: debug("ACT_USAGE"); break;
case ACT_MOUSEKEY: debug("ACT_MOUSEKEY"); break;
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case ACT_LAYER: debug("ACT_LAYER"); break;
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case ACT_LAYER_BIT: debug("ACT_LAYER_BIT"); break;
case ACT_MACRO: debug("ACT_MACRO"); break;
case ACT_COMMAND: debug("ACT_COMMAND"); break;
case ACT_FUNCTION: debug("ACT_FUNCTION"); break;
default: debug("UNKNOWN"); break;
}
debug("[");
debug_hex4(action.kind.param>>8);
debug(":");
debug_hex8(action.kind.param & 0xff);
debug("]");
}
static void debug_tapping_key(void)
{
debug("TAPPING_KEY="); debug_record(tapping_key); debug("\n");
}
static void debug_waiting_buffer(void)
{
debug("{ ");
for (uint8_t i = waiting_buffer_tail; i != waiting_buffer_head; i = (i + 1) % WAITING_BUFFER_SIZE) {
debug("["); debug_dec(i); debug("]="); debug_record(waiting_buffer[i]); debug(" ");
}
debug("}\n");
}