feat(behaviors): Add Tap-Dance behavior

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Kurtis Lew 2022-03-15 22:08:42 -07:00 committed by GitHub
parent ad5a12a7bc
commit 32ebe2cfb5
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58 changed files with 903 additions and 0 deletions

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@ -54,6 +54,7 @@ if ((NOT CONFIG_ZMK_SPLIT) OR CONFIG_ZMK_SPLIT_BLE_ROLE_CENTRAL)
target_sources(app PRIVATE src/behaviors/behavior_momentary_layer.c)
target_sources(app PRIVATE src/behaviors/behavior_mod_morph.c)
target_sources(app PRIVATE src/behaviors/behavior_outputs.c)
target_sources(app PRIVATE src/behaviors/behavior_tap_dance.c)
target_sources(app PRIVATE src/behaviors/behavior_toggle_layer.c)
target_sources(app PRIVATE src/behaviors/behavior_to_layer.c)
target_sources(app PRIVATE src/behaviors/behavior_transparent.c)

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@ -0,0 +1,16 @@
# Copyright (c) 2022 The ZMK Contributors
# SPDX-License-Identifier: MIT
description: Tap Dance Behavior
compatible: "zmk,behavior-tap-dance"
include: zero_param.yaml
properties:
bindings:
type: phandle-array
required: true
tapping-term-ms:
type: int
default: 200

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@ -0,0 +1,259 @@
/*
* Copyright (c) 2022 The ZMK Contributors
*
* SPDX-License-Identifier: MIT
*/
#define DT_DRV_COMPAT zmk_behavior_tap_dance
#include <device.h>
#include <drivers/behavior.h>
#include <logging/log.h>
#include <zmk/behavior.h>
#include <zmk/keymap.h>
#include <zmk/matrix.h>
#include <zmk/event_manager.h>
#include <zmk/events/position_state_changed.h>
#include <zmk/events/keycode_state_changed.h>
#include <zmk/hid.h>
LOG_MODULE_DECLARE(zmk, CONFIG_ZMK_LOG_LEVEL);
#if DT_HAS_COMPAT_STATUS_OKAY(DT_DRV_COMPAT)
#define ZMK_BHV_TAP_DANCE_MAX_HELD 10
#define ZMK_BHV_TAP_DANCE_POSITION_FREE ULONG_MAX
struct behavior_tap_dance_config {
uint32_t tapping_term_ms;
size_t behavior_count;
struct zmk_behavior_binding *behaviors;
};
struct active_tap_dance {
// Tap Dance Data
int counter;
uint32_t position;
uint32_t param1;
uint32_t param2;
bool is_pressed;
const struct behavior_tap_dance_config *config;
// Timer Data
bool timer_started;
bool timer_cancelled;
bool tap_dance_decided;
int64_t release_at;
struct k_delayed_work release_timer;
};
struct active_tap_dance active_tap_dances[ZMK_BHV_TAP_DANCE_MAX_HELD] = {};
static struct active_tap_dance *find_tap_dance(uint32_t position) {
for (int i = 0; i < ZMK_BHV_TAP_DANCE_MAX_HELD; i++) {
if (active_tap_dances[i].position == position && !active_tap_dances[i].timer_cancelled) {
return &active_tap_dances[i];
}
}
return NULL;
}
static int new_tap_dance(uint32_t position, const struct behavior_tap_dance_config *config,
struct active_tap_dance **tap_dance) {
for (int i = 0; i < ZMK_BHV_TAP_DANCE_MAX_HELD; i++) {
struct active_tap_dance *const ref_dance = &active_tap_dances[i];
if (ref_dance->position == ZMK_BHV_TAP_DANCE_POSITION_FREE) {
ref_dance->counter = 0;
ref_dance->position = position;
ref_dance->config = config;
ref_dance->release_at = 0;
ref_dance->is_pressed = true;
ref_dance->timer_started = true;
ref_dance->timer_cancelled = false;
ref_dance->tap_dance_decided = false;
*tap_dance = ref_dance;
return 0;
}
}
return -ENOMEM;
}
static void clear_tap_dance(struct active_tap_dance *tap_dance) {
tap_dance->position = ZMK_BHV_TAP_DANCE_POSITION_FREE;
}
static int stop_timer(struct active_tap_dance *tap_dance) {
int timer_cancel_result = k_delayed_work_cancel(&tap_dance->release_timer);
if (timer_cancel_result == -EINPROGRESS) {
// too late to cancel, we'll let the timer handler clear up.
tap_dance->timer_cancelled = true;
}
return timer_cancel_result;
}
static void reset_timer(struct active_tap_dance *tap_dance,
struct zmk_behavior_binding_event event) {
tap_dance->release_at = event.timestamp + tap_dance->config->tapping_term_ms;
int32_t ms_left = tap_dance->release_at - k_uptime_get();
if (ms_left > 0) {
k_delayed_work_submit(&tap_dance->release_timer, K_MSEC(ms_left));
LOG_DBG("Successfully reset timer at position %d", tap_dance->position);
}
}
static inline int press_tap_dance_behavior(struct active_tap_dance *tap_dance, int64_t timestamp) {
tap_dance->tap_dance_decided = true;
struct zmk_behavior_binding binding = tap_dance->config->behaviors[tap_dance->counter - 1];
struct zmk_behavior_binding_event event = {
.position = tap_dance->position,
.timestamp = timestamp,
};
return behavior_keymap_binding_pressed(&binding, event);
}
static inline int release_tap_dance_behavior(struct active_tap_dance *tap_dance,
int64_t timestamp) {
struct zmk_behavior_binding binding = tap_dance->config->behaviors[tap_dance->counter - 1];
struct zmk_behavior_binding_event event = {
.position = tap_dance->position,
.timestamp = timestamp,
};
clear_tap_dance(tap_dance);
return behavior_keymap_binding_released(&binding, event);
}
static int on_tap_dance_binding_pressed(struct zmk_behavior_binding *binding,
struct zmk_behavior_binding_event event) {
const struct device *dev = device_get_binding(binding->behavior_dev);
const struct behavior_tap_dance_config *cfg = dev->config;
struct active_tap_dance *tap_dance;
tap_dance = find_tap_dance(event.position);
if (tap_dance == NULL) {
if (new_tap_dance(event.position, cfg, &tap_dance) == -ENOMEM) {
LOG_ERR("Unable to create new tap dance. Insufficient space in active_tap_dances[].");
return ZMK_BEHAVIOR_OPAQUE;
}
LOG_DBG("%d created new tap dance", event.position);
}
tap_dance->is_pressed = true;
LOG_DBG("%d tap dance pressed", event.position);
stop_timer(tap_dance);
// Increment the counter on keypress. If the counter has reached its maximum
// value, invoke the last binding available.
if (tap_dance->counter < cfg->behavior_count) {
tap_dance->counter++;
}
if (tap_dance->counter == cfg->behavior_count) {
// LOG_DBG("Tap dance has been decided via maximum counter value");
press_tap_dance_behavior(tap_dance, event.timestamp);
return ZMK_EV_EVENT_BUBBLE;
}
reset_timer(tap_dance, event);
return ZMK_BEHAVIOR_OPAQUE;
}
static int on_tap_dance_binding_released(struct zmk_behavior_binding *binding,
struct zmk_behavior_binding_event event) {
LOG_DBG("%d tap dance keybind released", event.position);
struct active_tap_dance *tap_dance = find_tap_dance(event.position);
if (tap_dance == NULL) {
LOG_ERR("ACTIVE TAP DANCE CLEARED TOO EARLY");
return ZMK_BEHAVIOR_OPAQUE;
}
tap_dance->is_pressed = false;
if (tap_dance->tap_dance_decided) {
release_tap_dance_behavior(tap_dance, event.timestamp);
}
return ZMK_BEHAVIOR_OPAQUE;
}
void behavior_tap_dance_timer_handler(struct k_work *item) {
struct active_tap_dance *tap_dance = CONTAINER_OF(item, struct active_tap_dance, release_timer);
if (tap_dance->position == ZMK_BHV_TAP_DANCE_POSITION_FREE) {
return;
}
if (tap_dance->timer_cancelled) {
return;
}
LOG_DBG("Tap dance has been decided via timer. Counter reached: %d", tap_dance->counter);
press_tap_dance_behavior(tap_dance, tap_dance->release_at);
if (tap_dance->is_pressed) {
return;
}
release_tap_dance_behavior(tap_dance, tap_dance->release_at);
}
static const struct behavior_driver_api behavior_tap_dance_driver_api = {
.binding_pressed = on_tap_dance_binding_pressed,
.binding_released = on_tap_dance_binding_released,
};
static int tap_dance_position_state_changed_listener(const zmk_event_t *eh);
ZMK_LISTENER(behavior_tap_dance, tap_dance_position_state_changed_listener);
ZMK_SUBSCRIPTION(behavior_tap_dance, zmk_position_state_changed);
static int tap_dance_position_state_changed_listener(const zmk_event_t *eh) {
struct zmk_position_state_changed *ev = as_zmk_position_state_changed(eh);
if (ev == NULL) {
return ZMK_EV_EVENT_BUBBLE;
}
if (!ev->state) {
LOG_DBG("Ignore upstroke at position %d.", ev->position);
return ZMK_EV_EVENT_BUBBLE;
}
for (int i = 0; i < ZMK_BHV_TAP_DANCE_MAX_HELD; i++) {
struct active_tap_dance *tap_dance = &active_tap_dances[i];
if (tap_dance->position == ZMK_BHV_TAP_DANCE_POSITION_FREE) {
continue;
}
if (tap_dance->position == ev->position) {
continue;
}
stop_timer(tap_dance);
LOG_DBG("Tap dance interrupted, activating tap-dance at %d", tap_dance->position);
if (!tap_dance->tap_dance_decided) {
press_tap_dance_behavior(tap_dance, ev->timestamp);
if (!tap_dance->is_pressed) {
release_tap_dance_behavior(tap_dance, ev->timestamp);
}
return ZMK_EV_EVENT_BUBBLE;
}
}
return ZMK_EV_EVENT_BUBBLE;
}
static int behavior_tap_dance_init(const struct device *dev) {
static bool init_first_run = true;
if (init_first_run) {
for (int i = 0; i < ZMK_BHV_TAP_DANCE_MAX_HELD; i++) {
k_delayed_work_init(&active_tap_dances[i].release_timer,
behavior_tap_dance_timer_handler);
clear_tap_dance(&active_tap_dances[i]);
}
}
init_first_run = false;
return 0;
}
#define _TRANSFORM_ENTRY(idx, node) ZMK_KEYMAP_EXTRACT_BINDING(idx, node),
#define TRANSFORMED_BINDINGS(node) \
{ UTIL_LISTIFY(DT_INST_PROP_LEN(node, bindings), _TRANSFORM_ENTRY, DT_DRV_INST(node)) }
#define KP_INST(n) \
static struct zmk_behavior_binding \
behavior_tap_dance_config_##n##_bindings[DT_INST_PROP_LEN(n, bindings)] = \
TRANSFORMED_BINDINGS(n); \
static struct behavior_tap_dance_config behavior_tap_dance_config_##n = { \
.tapping_term_ms = DT_INST_PROP(n, tapping_term_ms), \
.behaviors = behavior_tap_dance_config_##n##_bindings, \
.behavior_count = DT_INST_PROP_LEN(n, bindings)}; \
DEVICE_AND_API_INIT(behavior_tap_dance_##n, DT_INST_LABEL(n), behavior_tap_dance_init, NULL, \
&behavior_tap_dance_config_##n, APPLICATION, \
CONFIG_KERNEL_INIT_PRIORITY_DEFAULT, &behavior_tap_dance_driver_api);
DT_INST_FOREACH_STATUS_OKAY(KP_INST)
#endif

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@ -0,0 +1,2 @@
s/.*hid_listener_keycode/kp/p
s/.*on_tap_dance_binding/td_binding/p

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@ -0,0 +1,5 @@
td_binding_pressed: 0 created new tap dance
td_binding_pressed: 0 tap dance pressed
td_binding_released: 0 tap dance keybind released
kp_pressed: usage_page 0x07 keycode 0x04 implicit_mods 0x00 explicit_mods 0x00
kp_released: usage_page 0x07 keycode 0x04 implicit_mods 0x00 explicit_mods 0x00

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@ -0,0 +1,11 @@
#include <dt-bindings/zmk/keys.h>
#include <behaviors.dtsi>
#include <dt-bindings/zmk/kscan_mock.h>
#include "../behavior_keymap.dtsi"
&kscan {
events = <
ZMK_MOCK_PRESS(0,0,10)
ZMK_MOCK_RELEASE(0,0,200)
>;
};

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@ -0,0 +1,2 @@
s/.*hid_listener_keycode/kp/p
s/.*on_tap_dance_binding/td_binding/p

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@ -0,0 +1,7 @@
td_binding_pressed: 0 created new tap dance
td_binding_pressed: 0 tap dance pressed
td_binding_released: 0 tap dance keybind released
td_binding_pressed: 0 tap dance pressed
td_binding_released: 0 tap dance keybind released
kp_pressed: usage_page 0x07 keycode 0x05 implicit_mods 0x00 explicit_mods 0x00
kp_released: usage_page 0x07 keycode 0x05 implicit_mods 0x00 explicit_mods 0x00

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@ -0,0 +1,13 @@
#include <dt-bindings/zmk/keys.h>
#include <behaviors.dtsi>
#include <dt-bindings/zmk/kscan_mock.h>
#include "../behavior_keymap.dtsi"
&kscan {
events = <
ZMK_MOCK_PRESS(0,0,10)
ZMK_MOCK_RELEASE(0,0,10)
ZMK_MOCK_PRESS(0,0,10)
ZMK_MOCK_RELEASE(0,0,200)
>;
};

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@ -0,0 +1,2 @@
s/.*hid_listener_keycode/kp/p
s/.*on_tap_dance_binding/td_binding/p

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@ -0,0 +1,9 @@
td_binding_pressed: 0 created new tap dance
td_binding_pressed: 0 tap dance pressed
td_binding_released: 0 tap dance keybind released
td_binding_pressed: 0 tap dance pressed
td_binding_released: 0 tap dance keybind released
td_binding_pressed: 0 tap dance pressed
td_binding_released: 0 tap dance keybind released
kp_pressed: usage_page 0x07 keycode 0x06 implicit_mods 0x00 explicit_mods 0x00
kp_released: usage_page 0x07 keycode 0x06 implicit_mods 0x00 explicit_mods 0x00

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@ -0,0 +1,15 @@
#include <dt-bindings/zmk/keys.h>
#include <behaviors.dtsi>
#include <dt-bindings/zmk/kscan_mock.h>
#include "../behavior_keymap.dtsi"
&kscan {
events = <
ZMK_MOCK_PRESS(0,0,10)
ZMK_MOCK_RELEASE(0,0,10)
ZMK_MOCK_PRESS(0,0,10)
ZMK_MOCK_RELEASE(0,0,10)
ZMK_MOCK_PRESS(0,0,10)
ZMK_MOCK_RELEASE(0,0,200)
>;
};

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@ -0,0 +1,2 @@
s/.*hid_listener_keycode/kp/p
s/.*on_tap_dance_binding/td_binding/p

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@ -0,0 +1,5 @@
td_binding_pressed: 0 created new tap dance
td_binding_pressed: 0 tap dance pressed
kp_pressed: usage_page 0x07 keycode 0xe1 implicit_mods 0x00 explicit_mods 0x00
td_binding_released: 0 tap dance keybind released
kp_released: usage_page 0x07 keycode 0xe1 implicit_mods 0x00 explicit_mods 0x00

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@ -0,0 +1,11 @@
#include <dt-bindings/zmk/keys.h>
#include <behaviors.dtsi>
#include <dt-bindings/zmk/kscan_mock.h>
#include "../behavior_keymap.dtsi"
&kscan {
events = <
ZMK_MOCK_PRESS(0,0,400)
ZMK_MOCK_RELEASE(0,0,10)
>;
};

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@ -0,0 +1,2 @@
s/.*hid_listener_keycode/kp/p
s/.*on_tap_dance_binding/td_binding/p

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@ -0,0 +1,7 @@
td_binding_pressed: 0 created new tap dance
td_binding_pressed: 0 tap dance pressed
td_binding_released: 0 tap dance keybind released
td_binding_pressed: 0 tap dance pressed
kp_pressed: usage_page 0x07 keycode 0xe2 implicit_mods 0x00 explicit_mods 0x00
td_binding_released: 0 tap dance keybind released
kp_released: usage_page 0x07 keycode 0xe2 implicit_mods 0x00 explicit_mods 0x00

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@ -0,0 +1,13 @@
#include <dt-bindings/zmk/keys.h>
#include <behaviors.dtsi>
#include <dt-bindings/zmk/kscan_mock.h>
#include "../behavior_keymap.dtsi"
&kscan {
events = <
ZMK_MOCK_PRESS(0,0,10)
ZMK_MOCK_RELEASE(0,0,10)
ZMK_MOCK_PRESS(0,0,400)
ZMK_MOCK_RELEASE(0,0,10)
>;
};

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@ -0,0 +1,2 @@
s/.*hid_listener_keycode/kp/p
s/.*on_tap_dance_binding/td_binding/p

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@ -0,0 +1,9 @@
td_binding_pressed: 0 created new tap dance
td_binding_pressed: 0 tap dance pressed
td_binding_released: 0 tap dance keybind released
td_binding_pressed: 0 tap dance pressed
td_binding_released: 0 tap dance keybind released
td_binding_pressed: 0 tap dance pressed
kp_pressed: usage_page 0x07 keycode 0xe3 implicit_mods 0x00 explicit_mods 0x00
td_binding_released: 0 tap dance keybind released
kp_released: usage_page 0x07 keycode 0xe3 implicit_mods 0x00 explicit_mods 0x00

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@ -0,0 +1,15 @@
#include <dt-bindings/zmk/keys.h>
#include <behaviors.dtsi>
#include <dt-bindings/zmk/kscan_mock.h>
#include "../behavior_keymap.dtsi"
&kscan {
events = <
ZMK_MOCK_PRESS(0,0,10)
ZMK_MOCK_RELEASE(0,0,10)
ZMK_MOCK_PRESS(0,0,10)
ZMK_MOCK_RELEASE(0,0,10)
ZMK_MOCK_PRESS(0,0,400)
ZMK_MOCK_RELEASE(0,0,10)
>;
};

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@ -0,0 +1,2 @@
s/.*hid_listener_keycode/kp/p
s/.*on_tap_dance_binding/td_binding/p

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@ -0,0 +1,10 @@
td_binding_pressed: 2 created new tap dance
td_binding_pressed: 2 tap dance pressed
kp_pressed: usage_page 0x07 keycode 0x1e implicit_mods 0x00 explicit_mods 0x00
td_binding_pressed: 1 created new tap dance
td_binding_pressed: 1 tap dance pressed
kp_pressed: usage_page 0x07 keycode 0x16 implicit_mods 0x00 explicit_mods 0x00
td_binding_released: 1 tap dance keybind released
kp_released: usage_page 0x07 keycode 0x16 implicit_mods 0x00 explicit_mods 0x00
td_binding_released: 2 tap dance keybind released
kp_released: usage_page 0x07 keycode 0x1e implicit_mods 0x00 explicit_mods 0x00

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@ -0,0 +1,13 @@
#include <dt-bindings/zmk/keys.h>
#include <behaviors.dtsi>
#include <dt-bindings/zmk/kscan_mock.h>
#include "../behavior_keymap.dtsi"
&kscan {
events = <
ZMK_MOCK_PRESS(1,0,10)
ZMK_MOCK_PRESS(0,1,10)
ZMK_MOCK_RELEASE(0,1,10)
ZMK_MOCK_RELEASE(1,0,10)
>;
};

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@ -0,0 +1,2 @@
s/.*hid_listener_keycode/kp/p
s/.*on_tap_dance_binding/td_binding/p

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@ -0,0 +1,10 @@
td_binding_pressed: 2 created new tap dance
td_binding_pressed: 2 tap dance pressed
kp_pressed: usage_page 0x07 keycode 0x1e implicit_mods 0x00 explicit_mods 0x00
td_binding_pressed: 1 created new tap dance
td_binding_pressed: 1 tap dance pressed
kp_pressed: usage_page 0x07 keycode 0x16 implicit_mods 0x00 explicit_mods 0x00
td_binding_released: 2 tap dance keybind released
kp_released: usage_page 0x07 keycode 0x1e implicit_mods 0x00 explicit_mods 0x00
td_binding_released: 1 tap dance keybind released
kp_released: usage_page 0x07 keycode 0x16 implicit_mods 0x00 explicit_mods 0x00

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@ -0,0 +1,13 @@
#include <dt-bindings/zmk/keys.h>
#include <behaviors.dtsi>
#include <dt-bindings/zmk/kscan_mock.h>
#include "../behavior_keymap.dtsi"
&kscan {
events = <
ZMK_MOCK_PRESS(1,0,10)
ZMK_MOCK_PRESS(0,1,10)
ZMK_MOCK_RELEASE(1,0,10)
ZMK_MOCK_RELEASE(0,1,10)
>;
};

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@ -0,0 +1,2 @@
s/.*hid_listener_keycode/kp/p
s/.*on_tap_dance_binding/td_binding/p

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@ -0,0 +1,10 @@
td_binding_pressed: 2 created new tap dance
td_binding_pressed: 2 tap dance pressed
td_binding_released: 2 tap dance keybind released
kp_pressed: usage_page 0x07 keycode 0x1e implicit_mods 0x00 explicit_mods 0x00
kp_released: usage_page 0x07 keycode 0x1e implicit_mods 0x00 explicit_mods 0x00
td_binding_pressed: 1 created new tap dance
td_binding_pressed: 1 tap dance pressed
kp_pressed: usage_page 0x07 keycode 0x16 implicit_mods 0x00 explicit_mods 0x00
td_binding_released: 1 tap dance keybind released
kp_released: usage_page 0x07 keycode 0x16 implicit_mods 0x00 explicit_mods 0x00

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@ -0,0 +1,13 @@
#include <dt-bindings/zmk/keys.h>
#include <behaviors.dtsi>
#include <dt-bindings/zmk/kscan_mock.h>
#include "../behavior_keymap.dtsi"
&kscan {
events = <
ZMK_MOCK_PRESS(1,0,10)
ZMK_MOCK_RELEASE(1,0,10)
ZMK_MOCK_PRESS(0,1,10)
ZMK_MOCK_RELEASE(0,1,10)
>;
};

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@ -0,0 +1,2 @@
s/.*hid_listener_keycode/kp/p
s/.*on_tap_dance_binding/td_binding/p

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@ -0,0 +1,10 @@
td_binding_pressed: 0 created new tap dance
td_binding_pressed: 0 tap dance pressed
kp_pressed: usage_page 0x07 keycode 0xe1 implicit_mods 0x00 explicit_mods 0x00
td_binding_pressed: 1 created new tap dance
td_binding_pressed: 1 tap dance pressed
kp_pressed: usage_page 0x07 keycode 0x16 implicit_mods 0x00 explicit_mods 0x00
td_binding_released: 1 tap dance keybind released
kp_released: usage_page 0x07 keycode 0x16 implicit_mods 0x00 explicit_mods 0x00
td_binding_released: 0 tap dance keybind released
kp_released: usage_page 0x07 keycode 0xe1 implicit_mods 0x00 explicit_mods 0x00

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@ -0,0 +1,13 @@
#include <dt-bindings/zmk/keys.h>
#include <behaviors.dtsi>
#include <dt-bindings/zmk/kscan_mock.h>
#include "../behavior_keymap.dtsi"
&kscan {
events = <
ZMK_MOCK_PRESS(0,0,400)
ZMK_MOCK_PRESS(0,1,10)
ZMK_MOCK_RELEASE(0,1,10)
ZMK_MOCK_RELEASE(0,0,10)
>;
};

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@ -0,0 +1,2 @@
s/.*hid_listener_keycode/kp/p
s/.*on_tap_dance_binding/td_binding/p

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@ -0,0 +1,10 @@
td_binding_pressed: 0 created new tap dance
td_binding_pressed: 0 tap dance pressed
kp_pressed: usage_page 0x07 keycode 0xe1 implicit_mods 0x00 explicit_mods 0x00
td_binding_pressed: 1 created new tap dance
td_binding_pressed: 1 tap dance pressed
kp_pressed: usage_page 0x07 keycode 0x16 implicit_mods 0x00 explicit_mods 0x00
td_binding_released: 0 tap dance keybind released
kp_released: usage_page 0x07 keycode 0xe1 implicit_mods 0x00 explicit_mods 0x00
td_binding_released: 1 tap dance keybind released
kp_released: usage_page 0x07 keycode 0x16 implicit_mods 0x00 explicit_mods 0x00

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@ -0,0 +1,13 @@
#include <dt-bindings/zmk/keys.h>
#include <behaviors.dtsi>
#include <dt-bindings/zmk/kscan_mock.h>
#include "../behavior_keymap.dtsi"
&kscan {
events = <
ZMK_MOCK_PRESS(0,0,400)
ZMK_MOCK_PRESS(0,1,10)
ZMK_MOCK_RELEASE(0,0,10)
ZMK_MOCK_RELEASE(0,1,10)
>;
};

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@ -0,0 +1,2 @@
s/.*hid_listener_keycode/kp/p
s/.*on_tap_dance_binding/td_binding/p

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@ -0,0 +1,10 @@
td_binding_pressed: 0 created new tap dance
td_binding_pressed: 0 tap dance pressed
kp_pressed: usage_page 0x07 keycode 0xe1 implicit_mods 0x00 explicit_mods 0x00
td_binding_released: 0 tap dance keybind released
kp_released: usage_page 0x07 keycode 0xe1 implicit_mods 0x00 explicit_mods 0x00
td_binding_pressed: 1 created new tap dance
td_binding_pressed: 1 tap dance pressed
kp_pressed: usage_page 0x07 keycode 0x16 implicit_mods 0x00 explicit_mods 0x00
td_binding_released: 1 tap dance keybind released
kp_released: usage_page 0x07 keycode 0x16 implicit_mods 0x00 explicit_mods 0x00

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#include <dt-bindings/zmk/keys.h>
#include <behaviors.dtsi>
#include <dt-bindings/zmk/kscan_mock.h>
#include "../behavior_keymap.dtsi"
&kscan {
events = <
ZMK_MOCK_PRESS(0,0,400)
ZMK_MOCK_RELEASE(0,0,10)
ZMK_MOCK_PRESS(0,1,10)
ZMK_MOCK_RELEASE(0,1,10)
>;
};

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s/.*hid_listener_keycode/kp/p
s/.*on_tap_dance_binding/td_binding/p

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td_binding_pressed: 1 created new tap dance
td_binding_pressed: 1 tap dance pressed
kp_pressed: usage_page 0x07 keycode 0x16 implicit_mods 0x00 explicit_mods 0x00
td_binding_released: 1 tap dance keybind released
kp_released: usage_page 0x07 keycode 0x16 implicit_mods 0x00 explicit_mods 0x00

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@ -0,0 +1,11 @@
#include <dt-bindings/zmk/keys.h>
#include <behaviors.dtsi>
#include <dt-bindings/zmk/kscan_mock.h>
#include "../behavior_keymap.dtsi"
&kscan {
events = <
ZMK_MOCK_PRESS(0,1,10)
ZMK_MOCK_RELEASE(0,1,10)
>;
};

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s/.*hid_listener_keycode/kp/p
s/.*on_tap_dance_binding/td_binding/p

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td_binding_pressed: 2 created new tap dance
td_binding_pressed: 2 tap dance pressed
kp_pressed: usage_page 0x07 keycode 0x1e implicit_mods 0x00 explicit_mods 0x00
td_binding_pressed: 3 created new tap dance
td_binding_pressed: 3 tap dance pressed
td_binding_released: 3 tap dance keybind released
td_binding_released: 2 tap dance keybind released
kp_released: usage_page 0x07 keycode 0x1e implicit_mods 0x00 explicit_mods 0x00
kp_pressed: usage_page 0x07 keycode 0x04 implicit_mods 0x00 explicit_mods 0x00
kp_released: usage_page 0x07 keycode 0x04 implicit_mods 0x00 explicit_mods 0x00

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@ -0,0 +1,13 @@
#include <dt-bindings/zmk/keys.h>
#include <behaviors.dtsi>
#include <dt-bindings/zmk/kscan_mock.h>
#include "../behavior_keymap.dtsi"
&kscan {
events = <
ZMK_MOCK_PRESS(1,0,10)
ZMK_MOCK_PRESS(1,1,10)
ZMK_MOCK_RELEASE(1,1,10)
ZMK_MOCK_RELEASE(1,0,200)
>;
};

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s/.*hid_listener_keycode/kp/p
s/.*on_tap_dance_binding/td_binding/p

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td_binding_pressed: 2 created new tap dance
td_binding_pressed: 2 tap dance pressed
kp_pressed: usage_page 0x07 keycode 0x1e implicit_mods 0x00 explicit_mods 0x00
td_binding_pressed: 3 created new tap dance
td_binding_pressed: 3 tap dance pressed
td_binding_released: 2 tap dance keybind released
kp_released: usage_page 0x07 keycode 0x1e implicit_mods 0x00 explicit_mods 0x00
td_binding_released: 3 tap dance keybind released
kp_pressed: usage_page 0x07 keycode 0x04 implicit_mods 0x00 explicit_mods 0x00
kp_released: usage_page 0x07 keycode 0x04 implicit_mods 0x00 explicit_mods 0x00

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#include <dt-bindings/zmk/keys.h>
#include <behaviors.dtsi>
#include <dt-bindings/zmk/kscan_mock.h>
#include "../behavior_keymap.dtsi"
&kscan {
events = <
ZMK_MOCK_PRESS(1,0,10)
ZMK_MOCK_PRESS(1,1,10)
ZMK_MOCK_RELEASE(1,0,10)
ZMK_MOCK_RELEASE(1,1,200)
>;
};

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s/.*hid_listener_keycode/kp/p
s/.*on_tap_dance_binding/td_binding/p

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td_binding_pressed: 2 created new tap dance
td_binding_pressed: 2 tap dance pressed
td_binding_released: 2 tap dance keybind released
kp_pressed: usage_page 0x07 keycode 0x1e implicit_mods 0x00 explicit_mods 0x00
kp_released: usage_page 0x07 keycode 0x1e implicit_mods 0x00 explicit_mods 0x00
td_binding_pressed: 3 created new tap dance
td_binding_pressed: 3 tap dance pressed
td_binding_released: 3 tap dance keybind released
kp_pressed: usage_page 0x07 keycode 0x04 implicit_mods 0x00 explicit_mods 0x00
kp_released: usage_page 0x07 keycode 0x04 implicit_mods 0x00 explicit_mods 0x00

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#include <dt-bindings/zmk/keys.h>
#include <behaviors.dtsi>
#include <dt-bindings/zmk/kscan_mock.h>
#include "../behavior_keymap.dtsi"
&kscan {
events = <
ZMK_MOCK_PRESS(1,0,10)
ZMK_MOCK_RELEASE(1,0,10)
ZMK_MOCK_PRESS(1,1,10)
ZMK_MOCK_RELEASE(1,1,200)
>;
};

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s/.*hid_listener_keycode/kp/p
s/.*on_tap_dance_binding/td_binding/p

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td_binding_pressed: 2 created new tap dance
td_binding_pressed: 2 tap dance pressed
td_binding_released: 2 tap dance keybind released
kp_pressed: usage_page 0x07 keycode 0x1e implicit_mods 0x00 explicit_mods 0x00
kp_released: usage_page 0x07 keycode 0x1e implicit_mods 0x00 explicit_mods 0x00
td_binding_pressed: 3 created new tap dance
td_binding_pressed: 3 tap dance pressed
td_binding_released: 3 tap dance keybind released
kp_pressed: usage_page 0x07 keycode 0x04 implicit_mods 0x00 explicit_mods 0x00
kp_released: usage_page 0x07 keycode 0x04 implicit_mods 0x00 explicit_mods 0x00
td_binding_pressed: 2 created new tap dance
td_binding_pressed: 2 tap dance pressed
td_binding_released: 2 tap dance keybind released
kp_pressed: usage_page 0x07 keycode 0x1e implicit_mods 0x00 explicit_mods 0x00
kp_released: usage_page 0x07 keycode 0x1e implicit_mods 0x00 explicit_mods 0x00

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#include <dt-bindings/zmk/keys.h>
#include <behaviors.dtsi>
#include <dt-bindings/zmk/kscan_mock.h>
#include "../behavior_keymap.dtsi"
&kscan {
events = <
ZMK_MOCK_PRESS(1,0,10)
ZMK_MOCK_RELEASE(1,0,10)
ZMK_MOCK_PRESS(1,1,10)
ZMK_MOCK_RELEASE(1,1,10)
ZMK_MOCK_PRESS(1,0,10)
ZMK_MOCK_RELEASE(1,0,200)
>;
};

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#include <dt-bindings/zmk/keys.h>
#include <behaviors.dtsi>
#include <dt-bindings/zmk/kscan_mock.h>
/ {
behaviors {
ht: hold_tap {
compatible = "zmk,behavior-hold-tap";
label = "HOLD_TAP";
#binding-cells = <2>;
tapping-term-ms = <200>;
quick_tap_ms = <0>;
flavor = "tap-preferred";
bindings = <&kp>, <&kp>;
};
tdm: tap_dance_mixed {
compatible = "zmk,behavior-tap-dance";
label = "TAP_DANCE_MOD";
#binding-cells = <0>;
tapping-term-ms = <200>;
bindings = <&ht LSHIFT A>, <&ht LALT B>, <&ht LGUI C>;
};
tdb: tap_dance_basic {
compatible = "zmk,behavior-tap-dance";
label = "TAP_DANCE_BASIC";
#binding-cells = <0>;
tapping-term-ms = <200>;
bindings = <&kp N1>, <&kp N2>, <&kp N3>;
};
td2: tap_dance_basic_2 {
compatible = "zmk,behavior-tap-dance";
label = "TAP_DANCE_BASIC_2";
#binding-cells = <0>;
tapping-term-ms = <200>;
bindings = <&kp A>, <&kp B>, <&kp C>;
};
tds: tap_dance_single {
compatible = "zmk,behavior-tap-dance";
label = "TAP_DANCE_SINGlE";
#binding-cells = <0>;
tapping-term-ms = <200>;
bindings = <&kp S>;
};
};
keymap {
compatible = "zmk,keymap";
label ="Default keymap";
default_layer {
bindings = <
&tdm &tds
&tdb &td2>;
};
};
};

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---
title: Tap-Dance Behavior
sidebar_label: Tap-Dance
---
## Summary
A tap-dance key invokes a different behavior (e.g. `kp`) corresponding
to how many times it is pressed. For example, you could configure a
tap-dance key that acts as `LSHIFT` if tapped once, or Caps _Lock_ if tapped twice.
The expandability of the number of [`bindings`](#bindings) attached to a
particular tap-dance is a great way to add more functionality to a single key,
especially for keyboards with a limited number of keys.
Tap-dances are completely custom, so for every unique tap-dance key,
a new tap-dance must be defined in your keymap's `behaviors`.
Tap-dances are designed to resolve immediately when interrupted by another keypress.
Meaning, when a keybind is pressed other than any active tap-dances,
the tap-dance will activate according to the current value of its
counter before the interrupting keybind is registered.
### Configuration
#### `tapping-term-ms`
Defines the maximum elapsed time after the last tap-dance keybind press
before a binding is selected from [`bindings`](#bindings).
Default value is `200`ms.
#### `bindings`
An array of one or more keybinds. This list can include [any ZMK keycode](../codes/) and bindings for ZMK behaviors.
#### Example Usage
This example configures a tap-dance named `td0` that outputs the number of times it is pressed from 1-3.
```
#include <behaviors.dtsi>
#include <dt-bindings/zmk/keys.h>
/ {
behaviors {
td0: tap_dance_0 {
compatible = "zmk,behavior-tap-dance";
label = "TAP_DANCE_0";
#binding-cells = <0>;
tapping-term-ms = <200>;
bindings = <&kp N1>, <&kp N2>, <&kp N3>;
};
};
keymap {
compatible = "zmk,keymap";
default_layer {
bindings = <
&td0
>;
};
};
};
```
The following image describes the behavior of this particular tap-dance.
![Timing Diagram](../assets/tap-dance/timing_diagram.svg)
:::note
Alphanumeric [`key press`](key-press.md) bindings, like those used for `td0`,
will release as soon as an interrupting key press occurs.
For instance, if a modifier key like `LSHIFT` were to replace the `N1`
binding in the last example above, it would remain pressed until `td0`'s
binding is released and the output would instead be `J`. Any following
alphanumeric key presses would be capitalized as long as `td0` is held down.
:::

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@ -28,6 +28,7 @@ module.exports = {
"behaviors/mod-morph",
"behaviors/sticky-key",
"behaviors/sticky-layer",
"behaviors/tap-dance",
"behaviors/caps-word",
"behaviors/key-repeat",
"behaviors/reset",