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qmk_firmware/quantum/action_tapping.c
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#include <stdint.h>
#include <stdbool.h>
#include "action.h"
#include "action_layer.h"
#include "action_tapping.h"
#include "keycode.h"
#include "keycode_config.h"
#include "quantum_keycodes.h"
#include "timer.h"
#include "wait.h"
#ifndef NO_ACTION_TAPPING
# if defined(IGNORE_MOD_TAP_INTERRUPT_PER_KEY)
# error "IGNORE_MOD_TAP_INTERRUPT_PER_KEY has been removed; the code needs to be ported to use HOLD_ON_OTHER_KEY_PRESS_PER_KEY instead."
# elif defined(IGNORE_MOD_TAP_INTERRUPT)
# error "IGNORE_MOD_TAP_INTERRUPT is no longer necessary as it is now the default behavior of mod-tap keys. Please remove it from your config."
# endif
# ifndef COMBO_ENABLE
# define IS_TAPPING_RECORD(r) (KEYEQ(tapping_key.event.key, (r->event.key)))
# else
# define IS_TAPPING_RECORD(r) (KEYEQ(tapping_key.event.key, (r->event.key)) && tapping_key.keycode == r->keycode)
# endif
# define WITHIN_TAPPING_TERM(e) (TIMER_DIFF_16(e.time, tapping_key.event.time) < GET_TAPPING_TERM(get_record_keycode(&tapping_key, false), &tapping_key))
# define WITHIN_QUICK_TAP_TERM(e) (TIMER_DIFF_16(e.time, tapping_key.event.time) < GET_QUICK_TAP_TERM(get_record_keycode(&tapping_key, false), &tapping_key))
# ifdef DYNAMIC_TAPPING_TERM_ENABLE
uint16_t g_tapping_term = TAPPING_TERM;
# endif
# ifdef TAPPING_TERM_PER_KEY
__attribute__((weak)) uint16_t get_tapping_term(uint16_t keycode, keyrecord_t *record) {
# ifdef DYNAMIC_TAPPING_TERM_ENABLE
return g_tapping_term;
# else
return TAPPING_TERM;
# endif
}
# endif
# ifdef QUICK_TAP_TERM_PER_KEY
__attribute__((weak)) uint16_t get_quick_tap_term(uint16_t keycode, keyrecord_t *record) {
return QUICK_TAP_TERM;
}
# endif
# ifdef PERMISSIVE_HOLD_PER_KEY
__attribute__((weak)) bool get_permissive_hold(uint16_t keycode, keyrecord_t *record) {
return false;
}
# endif
# ifdef SPECULATIVE_HOLD
typedef struct {
keypos_t key;
uint8_t mods;
} speculative_key_t;
# define SPECULATIVE_KEYS_SIZE 8
static speculative_key_t speculative_keys[SPECULATIVE_KEYS_SIZE] = {};
static uint8_t num_speculative_keys = 0;
static uint8_t prev_speculative_mods = 0;
static uint8_t speculative_mods = 0;
/** Handler to be called on incoming press events. */
static void speculative_key_press(keyrecord_t *record);
# endif // SPECULATIVE_HOLD
# ifdef HOLD_ON_OTHER_KEY_PRESS_PER_KEY
__attribute__((weak)) bool get_hold_on_other_key_press(uint16_t keycode, keyrecord_t *record) {
return false;
}
# endif
# if defined(AUTO_SHIFT_ENABLE) && defined(RETRO_SHIFT)
# include "process_auto_shift.h"
# endif
static keyrecord_t tapping_key = {};
static keyrecord_t waiting_buffer[WAITING_BUFFER_SIZE] = {};
static uint8_t waiting_buffer_head = 0;
static uint8_t waiting_buffer_tail = 0;
static bool process_tapping(keyrecord_t *record);
static bool waiting_buffer_enq(keyrecord_t record);
static void waiting_buffer_clear(void);
static bool waiting_buffer_typed(keyevent_t event);
static bool waiting_buffer_has_anykey_pressed(void);
static void waiting_buffer_scan_tap(void);
static void debug_tapping_key(void);
static void debug_waiting_buffer(void);
/** \brief Action Tapping Process
*
* FIXME: Needs doc
*/
void action_tapping_process(keyrecord_t record) {
# ifdef SPECULATIVE_HOLD
prev_speculative_mods = speculative_mods;
if (record.event.pressed) {
speculative_key_press(&record);
}
# endif // SPECULATIVE_HOLD
if (process_tapping(&record)) {
if (IS_EVENT(record.event)) {
ac_dprintf("processed: ");
debug_record(record);
ac_dprintf("\n");
}
} else {
if (!waiting_buffer_enq(record)) {
// clear all in case of overflow.
ac_dprintf("OVERFLOW: CLEAR ALL STATES\n");
clear_keyboard();
waiting_buffer_clear();
tapping_key = (keyrecord_t){0};
}
}
# ifdef SPECULATIVE_HOLD
if (speculative_mods != prev_speculative_mods) {
send_keyboard_report();
}
# endif // SPECULATIVE_HOLD
// process waiting_buffer
if (IS_EVENT(record.event) && waiting_buffer_head != waiting_buffer_tail) {
ac_dprintf("---- action_exec: process waiting_buffer -----\n");
}
for (; waiting_buffer_tail != waiting_buffer_head; waiting_buffer_tail = (waiting_buffer_tail + 1) % WAITING_BUFFER_SIZE) {
if (process_tapping(&waiting_buffer[waiting_buffer_tail])) {
ac_dprintf("processed: waiting_buffer[%u] =", waiting_buffer_tail);
debug_record(waiting_buffer[waiting_buffer_tail]);
ac_dprintf("\n\n");
} else {
break;
}
}
if (IS_EVENT(record.event)) {
ac_dprintf("\n");
}
}
/* Some conditionally defined helper macros to keep process_tapping more
* readable. The conditional definition of tapping_keycode and all the
* conditional uses of it are hidden inside macros named TAP_...
*/
# define TAP_DEFINE_KEYCODE const uint16_t tapping_keycode = get_record_keycode(&tapping_key, false)
# if defined(AUTO_SHIFT_ENABLE) && defined(RETRO_SHIFT)
# ifdef RETRO_TAPPING_PER_KEY
# define TAP_GET_RETRO_TAPPING(keyp) get_auto_shifted_key(tapping_keycode, keyp) && get_retro_tapping(tapping_keycode, &tapping_key)
# else
# define TAP_GET_RETRO_TAPPING(keyp) get_auto_shifted_key(tapping_keycode, keyp)
# endif
/* Used to extend TAPPING_TERM:
* indefinitely if RETRO_SHIFT does not have a value
* to RETRO_SHIFT if RETRO_SHIFT is set
* for possibly retro shifted keys.
*/
# define MAYBE_RETRO_SHIFTING(ev, keyp) (get_auto_shifted_key(tapping_keycode, keyp) && TAP_GET_RETRO_TAPPING(keyp) && ((RETRO_SHIFT + 0) == 0 || TIMER_DIFF_16((ev).time, tapping_key.event.time) < (RETRO_SHIFT + 0)))
# define TAP_IS_LT IS_QK_LAYER_TAP(tapping_keycode)
# define TAP_IS_MT IS_QK_MOD_TAP(tapping_keycode)
# define TAP_IS_RETRO IS_RETRO(tapping_keycode)
# else
# define TAP_GET_RETRO_TAPPING(keyp) false
# define MAYBE_RETRO_SHIFTING(ev, kp) false
# define TAP_IS_LT false
# define TAP_IS_MT false
# define TAP_IS_RETRO false
# endif
# ifdef PERMISSIVE_HOLD_PER_KEY
# define TAP_GET_PERMISSIVE_HOLD get_permissive_hold(tapping_keycode, &tapping_key)
# elif defined(PERMISSIVE_HOLD)
# define TAP_GET_PERMISSIVE_HOLD true
# else
# define TAP_GET_PERMISSIVE_HOLD false
# endif
# ifdef HOLD_ON_OTHER_KEY_PRESS_PER_KEY
# define TAP_GET_HOLD_ON_OTHER_KEY_PRESS get_hold_on_other_key_press(tapping_keycode, &tapping_key)
# elif defined(HOLD_ON_OTHER_KEY_PRESS)
# define TAP_GET_HOLD_ON_OTHER_KEY_PRESS true
# else
# define TAP_GET_HOLD_ON_OTHER_KEY_PRESS false
# endif
/** \brief Tapping
*
* Rule: Tap key is typed(pressed and released) within TAPPING_TERM.
* (without interfering by typing other key)
*/
/* return true when key event is processed or consumed. */
bool process_tapping(keyrecord_t *keyp) {
const keyevent_t event = keyp->event;
// state machine is in the "reset" state, no tapping key is to be
// processed
if (IS_NOEVENT(tapping_key.event)) {
if (!IS_EVENT(event)) {
// early return for tick events
} else if (event.pressed && is_tap_record(keyp)) {
// the currently pressed key is a tapping key, therefore transition
// into the "pressed" tapping key state
ac_dprintf("Tapping: Start(Press tap key).\n");
tapping_key = *keyp;
process_record_tap_hint(&tapping_key);
waiting_buffer_scan_tap();
debug_tapping_key();
} else {
// the current key is just a regular key, pass it on for regular
// processing
process_record(keyp);
}
return true;
}
# if (defined(AUTO_SHIFT_ENABLE) && defined(RETRO_SHIFT)) || defined(PERMISSIVE_HOLD_PER_KEY) || defined(HOLD_ON_OTHER_KEY_PRESS_PER_KEY)
TAP_DEFINE_KEYCODE;
# endif
// process "pressed" tapping key state
if (tapping_key.event.pressed) {
if (WITHIN_TAPPING_TERM(event) || MAYBE_RETRO_SHIFTING(event, keyp)) {
if (IS_NOEVENT(event)) {
// early return for tick events
return true;
}
if (tapping_key.tap.count == 0) {
if (IS_TAPPING_RECORD(keyp) && !event.pressed) {
// first tap!
ac_dprintf("Tapping: First tap(0->1).\n");
tapping_key.tap.count = 1;
debug_tapping_key();
process_record(&tapping_key);
// copy tapping state
keyp->tap = tapping_key.tap;
// enqueue
return false;
}
/* Process a key typed within TAPPING_TERM
* This can register the key before settlement of tapping,
* useful for long TAPPING_TERM but may prevent fast typing.
*/
// clang-format off
else if (
!event.pressed && waiting_buffer_typed(event) &&
(
TAP_GET_PERMISSIVE_HOLD ||
// Causes nested taps to not wait past TAPPING_TERM/RETRO_SHIFT
// unnecessarily and fixes them for Layer Taps.
TAP_GET_RETRO_TAPPING(keyp)
)
) {
// clang-format on
ac_dprintf("Tapping: End. No tap. Interfered by typing key\n");
process_record(&tapping_key);
tapping_key = (keyrecord_t){0};
debug_tapping_key();
// enqueue
return false;
}
/* Process release event of a key pressed before tapping starts
* Without this unexpected repeating will occur with having fast repeating setting
* https://github.com/tmk/tmk_keyboard/issues/60
*/
else if (!event.pressed && !waiting_buffer_typed(event)) {
// Modifier/Layer should be retained till end of this tapping.
action_t action = layer_switch_get_action(event.key);
switch (action.kind.id) {
case ACT_LMODS:
case ACT_RMODS:
if (action.key.mods && !action.key.code) return false;
if (IS_MODIFIER_KEYCODE(action.key.code)) return false;
break;
case ACT_LMODS_TAP:
case ACT_RMODS_TAP:
if (action.key.mods && keyp->tap.count == 0) return false;
if (IS_MODIFIER_KEYCODE(action.key.code)) return false;
break;
case ACT_LAYER_TAP:
case ACT_LAYER_TAP_EXT:
switch (action.layer_tap.code) {
case 0 ...(OP_TAP_TOGGLE - 1):
case OP_ON_OFF:
case OP_OFF_ON:
case OP_SET_CLEAR:
return false;
}
break;
}
// Release of key should be process immediately.
ac_dprintf("Tapping: release event of a key pressed before tapping\n");
process_record(keyp);
return true;
} else {
// set interrupted flag when other key pressed during tapping
if (event.pressed) {
tapping_key.tap.interrupted = true;
if (TAP_GET_HOLD_ON_OTHER_KEY_PRESS
# if defined(AUTO_SHIFT_ENABLE) && defined(RETRO_SHIFT)
// Auto Shift cannot evaluate this early
// Retro Shift uses the hold action for all nested taps even without HOLD_ON_OTHER_KEY_PRESS, so this is fine to skip
&& !(MAYBE_RETRO_SHIFTING(event, keyp) && get_auto_shifted_key(get_record_keycode(keyp, false), keyp))
# endif
) {
ac_dprintf("Tapping: End. No tap. Interfered by pressed key\n");
process_record(&tapping_key);
tapping_key = (keyrecord_t){0};
debug_tapping_key();
// enqueue
return false;
}
}
// enqueue
return false;
}
}
// tap_count > 0
else {
if (IS_TAPPING_RECORD(keyp) && !event.pressed) {
ac_dprintf("Tapping: Tap release(%u)\n", tapping_key.tap.count);
keyp->tap = tapping_key.tap;
process_record(keyp);
tapping_key = *keyp;
debug_tapping_key();
return true;
} else if (is_tap_record(keyp) && event.pressed) {
if (tapping_key.tap.count > 1) {
ac_dprintf("Tapping: Start new tap with releasing last tap(>1).\n");
// unregister key
process_record(&(keyrecord_t){
.tap = tapping_key.tap,
.event.key = tapping_key.event.key,
.event.time = event.time,
.event.pressed = false,
.event.type = tapping_key.event.type,
# ifdef COMBO_ENABLE
.keycode = tapping_key.keycode,
# endif
});
} else {
ac_dprintf("Tapping: Start while last tap(1).\n");
}
tapping_key = *keyp;
waiting_buffer_scan_tap();
debug_tapping_key();
return true;
} else {
ac_dprintf("Tapping: key event while last tap(>0).\n");
# if defined(AUTO_SHIFT_ENABLE) && defined(RETRO_SHIFT)
retroshift_swap_times();
# endif
process_record(keyp);
return true;
}
}
}
// after TAPPING_TERM
else {
if (tapping_key.tap.count == 0) {
ac_dprintf("Tapping: End. Timeout. Not tap(0): ");
debug_event(event);
ac_dprintf("\n");
process_record(&tapping_key);
tapping_key = (keyrecord_t){0};
debug_tapping_key();
return false;
} else {
if (IS_NOEVENT(event)) {
return true;
}
if (IS_TAPPING_RECORD(keyp) && !event.pressed) {
ac_dprintf("Tapping: End. last timeout tap release(>0).");
keyp->tap = tapping_key.tap;
process_record(keyp);
tapping_key = (keyrecord_t){0};
return true;
} else if (is_tap_record(keyp) && event.pressed) {
if (tapping_key.tap.count > 1) {
ac_dprintf("Tapping: Start new tap with releasing last timeout tap(>1).\n");
// unregister key
process_record(&(keyrecord_t){
.tap = tapping_key.tap,
.event.key = tapping_key.event.key,
.event.time = event.time,
.event.pressed = false,
.event.type = tapping_key.event.type,
# ifdef COMBO_ENABLE
.keycode = tapping_key.keycode,
# endif
});
} else {
ac_dprintf("Tapping: Start while last timeout tap(1).\n");
}
tapping_key = *keyp;
waiting_buffer_scan_tap();
debug_tapping_key();
return true;
} else {
ac_dprintf("Tapping: key event while last timeout tap(>0).\n");
process_record(keyp);
return true;
}
}
}
}
// process "released" tapping key state
else {
if (WITHIN_TAPPING_TERM(event) || MAYBE_RETRO_SHIFTING(event, keyp)) {
if (IS_NOEVENT(event)) {
// early return for tick events
return true;
}
if (event.pressed) {
if (IS_TAPPING_RECORD(keyp)) {
if (WITHIN_QUICK_TAP_TERM(event) && !tapping_key.tap.interrupted && tapping_key.tap.count > 0) {
// sequential tap.
keyp->tap = tapping_key.tap;
if (keyp->tap.count < 15) keyp->tap.count += 1;
ac_dprintf("Tapping: Tap press(%u)\n", keyp->tap.count);
process_record(keyp);
tapping_key = *keyp;
debug_tapping_key();
return true;
}
// FIX: start new tap again
tapping_key = *keyp;
return true;
} else if (is_tap_record(keyp)) {
// Sequential tap can be interfered with other tap key.
ac_dprintf("Tapping: Start with interfering other tap.\n");
tapping_key = *keyp;
waiting_buffer_scan_tap();
debug_tapping_key();
return true;
} else {
// should none in buffer
// FIX: interrupted when other key is pressed
tapping_key.tap.interrupted = true;
process_record(keyp);
return true;
}
} else {
ac_dprintf("Tapping: other key just after tap.\n");
process_record(keyp);
return true;
}
} else {
// Timeout - reset state machine.
ac_dprintf("Tapping: End(Timeout after releasing last tap): ");
debug_event(event);
ac_dprintf("\n");
tapping_key = (keyrecord_t){0};
debug_tapping_key();
return false;
}
}
}
/** \brief Waiting buffer enq
*
* FIXME: Needs docs
*/
bool waiting_buffer_enq(keyrecord_t record) {
if (IS_NOEVENT(record.event)) {
return true;
}
if ((waiting_buffer_head + 1) % WAITING_BUFFER_SIZE == waiting_buffer_tail) {
ac_dprintf("waiting_buffer_enq: Over flow.\n");
return false;
}
waiting_buffer[waiting_buffer_head] = record;
waiting_buffer_head = (waiting_buffer_head + 1) % WAITING_BUFFER_SIZE;
ac_dprintf("waiting_buffer_enq: ");
debug_waiting_buffer();
return true;
}
/** \brief Waiting buffer clear
*
* FIXME: Needs docs
*/
void waiting_buffer_clear(void) {
waiting_buffer_head = 0;
waiting_buffer_tail = 0;
}
/** \brief Waiting buffer typed
*
* FIXME: Needs docs
*/
bool waiting_buffer_typed(keyevent_t event) {
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;
}
}
return false;
}
/** \brief Waiting buffer has anykey pressed
*
* FIXME: Needs docs
*/
__attribute__((unused)) bool waiting_buffer_has_anykey_pressed(void) {
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;
}
return false;
}
/** \brief Scan buffer for tapping
*
* FIXME: Needs docs
*/
void waiting_buffer_scan_tap(void) {
// early return if:
// - tapping already is settled
// - invalid state: tapping_key released && tap.count == 0
if ((tapping_key.tap.count > 0) || !tapping_key.event.pressed) {
return;
}
# if (defined(AUTO_SHIFT_ENABLE) && defined(RETRO_SHIFT))
TAP_DEFINE_KEYCODE;
# endif
for (uint8_t i = waiting_buffer_tail; i != waiting_buffer_head; i = (i + 1) % WAITING_BUFFER_SIZE) {
keyrecord_t *candidate = &waiting_buffer[i];
// clang-format off
if (IS_EVENT(candidate->event) && KEYEQ(candidate->event.key, tapping_key.event.key) && !candidate->event.pressed && (
WITHIN_TAPPING_TERM(waiting_buffer[i].event) || MAYBE_RETRO_SHIFTING(waiting_buffer[i].event, &tapping_key)
)) {
// clang-format on
tapping_key.tap.count = 1;
candidate->tap.count = 1;
process_record(&tapping_key);
ac_dprintf("waiting_buffer_scan_tap: found at [%u]\n", i);
debug_waiting_buffer();
return;
}
}
}
# ifdef SPECULATIVE_HOLD
static void debug_speculative_keys(void) {
ac_dprintf("mods = { ");
for (int8_t i = 0; i < num_speculative_keys; ++i) {
ac_dprintf("%02X ", speculative_keys[i].mods);
}
ac_dprintf("}, keys = { ");
for (int8_t i = 0; i < num_speculative_keys; ++i) {
ac_dprintf("%02X%02X ", speculative_keys[i].key.row, speculative_keys[i].key.col);
}
ac_dprintf("}\n");
}
// Find key in speculative_keys. Returns num_speculative_keys if not found.
static int8_t speculative_keys_find(keypos_t key) {
uint8_t i;
for (i = 0; i < num_speculative_keys; ++i) {
if (KEYEQ(speculative_keys[i].key, key)) {
break;
}
}
return i;
}
static void speculative_key_press(keyrecord_t *record) {
if (num_speculative_keys >= SPECULATIVE_KEYS_SIZE) { // Overflow!
ac_dprintf("SPECULATIVE KEYS OVERFLOW: IGNORING EVENT\n");
return; // Don't trigger: speculative_keys is full.
}
if (speculative_keys_find(record->event.key) < num_speculative_keys) {
return; // Don't trigger: key is already in speculative_keys.
}
const uint16_t keycode = get_record_keycode(record, false);
if (!IS_QK_MOD_TAP(keycode)) {
return; // Don't trigger: not a mod-tap key.
}
uint8_t mods = mod_config(QK_MOD_TAP_GET_MODS(keycode));
if ((mods & 0x10) != 0) { // Unpack 5-bit mods to 8-bit representation.
mods <<= 4;
}
if ((~(get_mods() | speculative_mods) & mods) == 0) {
return; // Don't trigger: mods are already active.
}
// Don't do Speculative Hold when there are non-speculated buffered events,
// since that could result in sending keys out of order.
for (uint8_t i = waiting_buffer_tail; i != waiting_buffer_head; i = (i + 1) % WAITING_BUFFER_SIZE) {
if (!waiting_buffer[i].tap.speculated) {
return;
}
}
if (get_speculative_hold(keycode, record)) {
record->tap.speculated = true;
speculative_mods |= mods;
// Remember the keypos and mods associated with this key.
speculative_keys[num_speculative_keys] = (speculative_key_t){
.key = record->event.key,
.mods = mods,
};
++num_speculative_keys;
ac_dprintf("Speculative Hold: ");
debug_speculative_keys();
}
}
uint8_t get_speculative_mods(void) {
return speculative_mods;
}
__attribute__((weak)) bool get_speculative_hold(uint16_t keycode, keyrecord_t *record) {
const uint8_t mods = mod_config(QK_MOD_TAP_GET_MODS(keycode));
return (mods & (MOD_LCTL | MOD_LSFT)) == (mods & (MOD_HYPR));
}
void speculative_key_settled(keyrecord_t *record) {
if (num_speculative_keys == 0) {
return; // Early return when there are no active speculative keys.
}
uint8_t i = speculative_keys_find(record->event.key);
const uint16_t keycode = get_record_keycode(record, false);
if (IS_QK_MOD_TAP(keycode) && record->tap.count == 0) { // MT hold press.
if (i < num_speculative_keys) {
--num_speculative_keys;
const uint8_t cleared_mods = speculative_keys[i].mods;
if (num_speculative_keys) {
speculative_mods &= ~cleared_mods;
// Don't call send_keyboard_report() here; allow default
// handling to reapply the mod before the next report.
// Remove the ith entry from speculative_keys.
for (uint8_t j = i; j < num_speculative_keys; ++j) {
speculative_keys[j] = speculative_keys[j + 1];
}
} else {
speculative_mods = 0;
}
ac_dprintf("Speculative Hold: settled %02x, ", cleared_mods);
debug_speculative_keys();
}
} else { // Tap press event; cancel speculatively-held mod.
if (i >= num_speculative_keys) {
i = 0;
}
// Clear mods for the ith key and all keys that follow.
uint8_t cleared_mods = 0;
for (uint8_t j = i; j < num_speculative_keys; ++j) {
cleared_mods |= speculative_keys[j].mods;
}
num_speculative_keys = i; // Remove ith and following entries.
if ((prev_speculative_mods & cleared_mods) != 0) {
# ifdef DUMMY_MOD_NEUTRALIZER_KEYCODE
neutralize_flashing_modifiers(get_mods() | prev_speculative_mods);
# endif // DUMMY_MOD_NEUTRALIZER_KEYCODE
}
if (num_speculative_keys) {
speculative_mods &= ~cleared_mods;
} else {
speculative_mods = 0;
}
send_keyboard_report();
wait_ms(TAP_CODE_DELAY);
ac_dprintf("Speculative Hold: canceled %02x, ", cleared_mods);
debug_speculative_keys();
}
}
# endif // SPECULATIVE_HOLD
/** \brief Tapping key debug print
*
* FIXME: Needs docs
*/
static void debug_tapping_key(void) {
ac_dprintf("TAPPING_KEY=");
debug_record(tapping_key);
ac_dprintf("\n");
}
/** \brief Waiting buffer debug print
*
* FIXME: Needs docs
*/
static void debug_waiting_buffer(void) {
ac_dprintf("{ ");
for (uint8_t i = waiting_buffer_tail; i != waiting_buffer_head; i = (i + 1) % WAITING_BUFFER_SIZE) {
ac_dprintf("[%u]=", i);
debug_record(waiting_buffer[i]);
ac_dprintf(" ");
}
ac_dprintf("}\n");
}
#endif
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