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Behaviours: add key-tap behavior

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This is a solution for keys that use the same keycode but different
modifiers (see #1076 as an example, also { and [ or ] and } might occur
quite often).

The new key behavior introduced here is a simple tap that immediately
sends a release event, so that a keypress of the same keycode with a
different modifier can be detected immediately.
This commit is contained in:
Marco Sterbik 2022-02-21 22:56:19 +01:00
parent 1e8224c296
commit cb50620f9f
5 changed files with 73 additions and 1 deletions
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1
app/CMakeLists.txt
View file

@ -39,6 +39,7 @@ if ((NOT CONFIG_ZMK_SPLIT) OR CONFIG_ZMK_SPLIT_ROLE_CENTRAL)
target_sources(app PRIVATE src/hid.c)
target_sources(app PRIVATE src/behaviors/behavior_key_press.c)
target_sources_ifdef(CONFIG_ZMK_BEHAVIOR_KEY_TOGGLE app PRIVATE src/behaviors/behavior_key_toggle.c)
target_sources(app PRIVATE src/behaviors/behavior_key_tap.c)
target_sources(app PRIVATE src/behaviors/behavior_hold_tap.c)
target_sources(app PRIVATE src/behaviors/behavior_sticky_key.c)
target_sources(app PRIVATE src/behaviors/behavior_caps_word.c)

1
app/dts/behaviors.dtsi
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@ -1,5 +1,6 @@
#include <behaviors/key_press.dtsi>
#include <behaviors/key_toggle.dtsi>
#include <behaviors/key_tap.dtsi>
#include <behaviors/transparent.dtsi>
#include <behaviors/none.dtsi>
#include <behaviors/mod_tap.dtsi>

15
app/dts/behaviors/key_tap.dtsi Normal file
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@ -0,0 +1,15 @@
/*
* Copyright (c) 2022 The ZMK Contributors
*
* SPDX-License-Identifier: MIT
*/
/ {
behaviors {
/omit-if-no-ref/ kt: behavior_key_tap {
compatible = "zmk,behavior-key-tap";
label = "KEY_TAP";
#binding-cells = <1>;
};
};
};

8
app/dts/bindings/behaviors/zmk,behavior-key-tap.yaml Normal file
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@ -0,0 +1,8 @@
# Copyright (c) 2022 The ZMK Contributors
# SPDX-License-Identifier: MIT
description: Key press/immediate release behavior
compatible: "zmk,behavior-key-tap"
include: one_param.yaml

47
app/src/behaviors/behavior_key_tap.c Normal file
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@ -0,0 +1,47 @@
/*
* Copyright (c) 2020 The ZMK Contributors
*
* SPDX-License-Identifier: MIT
*/
#define DT_DRV_COMPAT zmk_behavior_key_tap
#include <device.h>
#include <drivers/behavior.h>
#include <logging/log.h>
#include <zmk/event_manager.h>
#include <zmk/events/keycode_state_changed.h>
#include <zmk/behavior.h>
LOG_MODULE_DECLARE(zmk, CONFIG_ZMK_LOG_LEVEL);
static int behavior_key_tap_init(const struct device *dev) { return 0; };
static int on_keymap_binding_pressed(struct zmk_behavior_binding *binding,
struct zmk_behavior_binding_event event) {
LOG_DBG("position %d keycode 0x%02X", event.position, binding->param1);
int ret = 0;
ret = ZMK_EVENT_RAISE(zmk_keycode_state_changed_from_encoded(binding->param1, true, event.timestamp));
if(ret != 0) {
return 0;
}
return ZMK_EVENT_RAISE(zmk_keycode_state_changed_from_encoded(binding->param1, false, event.timestamp));
}
static int on_keymap_binding_released(struct zmk_behavior_binding *binding,
struct zmk_behavior_binding_event event) {
LOG_DBG("position %d keycode 0x%02X", event.position, binding->param1);
return 0;
}
static const struct behavior_driver_api behavior_key_tap_driver_api = {
.binding_pressed = on_keymap_binding_pressed, .binding_released = on_keymap_binding_released};
#define KT_INST(n) \
DEVICE_DT_INST_DEFINE(n, behavior_key_tap_init, device_pm_control_nop, NULL, NULL, \
APPLICATION, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT, \
&behavior_key_tap_driver_api);
DT_INST_FOREACH_STATUS_OKAY(KT_INST)