86 lines
2.9 KiB
C
86 lines
2.9 KiB
C
/*
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* Copyright (c) 2020 The ZMK Contributors
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*
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* SPDX-License-Identifier: MIT
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*/
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#include <drivers/behavior.h>
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#include <logging/log.h>
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LOG_MODULE_DECLARE(zmk, CONFIG_ZMK_LOG_LEVEL);
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#include <zmk/event_manager.h>
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#include <zmk/events/keycode_state_changed.h>
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#include <zmk/events/modifiers_state_changed.h>
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#include <zmk/hid.h>
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#include <dt-bindings/zmk/hid_usage_pages.h>
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#include <zmk/endpoints.h>
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static int hid_listener_keycode_pressed(uint8_t usage_page, uint32_t keycode,
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zmk_mod_flags implicit_modifiers) {
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int err;
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LOG_DBG("usage_page 0x%02X keycode 0x%02X mods 0x%02X", usage_page, keycode,
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implicit_modifiers);
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switch (usage_page) {
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case HID_USAGE_KEY:
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err = zmk_hid_keyboard_press(keycode);
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if (err) {
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LOG_ERR("Unable to press keycode");
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return err;
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}
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break;
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case HID_USAGE_CONSUMER:
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err = zmk_hid_consumer_press(keycode);
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if (err) {
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LOG_ERR("Unable to press keycode");
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return err;
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}
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break;
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}
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zmk_hid_implicit_modifiers_press(implicit_modifiers);
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return zmk_endpoints_send_report(usage_page);
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}
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static int hid_listener_keycode_released(uint8_t usage_page, uint32_t keycode,
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zmk_mod_flags implicit_modifiers) {
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int err;
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LOG_DBG("usage_page 0x%02X keycode 0x%02X mods 0x%02X", usage_page, keycode,
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implicit_modifiers);
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switch (usage_page) {
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case HID_USAGE_KEY:
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err = zmk_hid_keyboard_release(keycode);
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if (err) {
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LOG_ERR("Unable to release keycode");
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return err;
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}
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break;
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case HID_USAGE_CONSUMER:
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err = zmk_hid_consumer_release(keycode);
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if (err) {
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LOG_ERR("Unable to release keycode");
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return err;
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}
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}
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// There is a minor issue with this code.
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// If LC(A) is pressed, then LS(B), then LC(A) is released, the shift for B will be released
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// prematurely. This causes if LS(B) to repeat like Bbbbbbbb when pressed for a long time.
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// Solving this would require keeping track of which key's implicit modifiers are currently
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// active and only releasing modifiers at that time.
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zmk_hid_implicit_modifiers_release();
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return zmk_endpoints_send_report(usage_page);
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}
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int hid_listener(const struct zmk_event_header *eh) {
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if (is_keycode_state_changed(eh)) {
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const struct keycode_state_changed *ev = cast_keycode_state_changed(eh);
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if (ev->state) {
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hid_listener_keycode_pressed(ev->usage_page, ev->keycode, ev->implicit_modifiers);
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} else {
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hid_listener_keycode_released(ev->usage_page, ev->keycode, ev->implicit_modifiers);
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}
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}
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return 0;
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}
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ZMK_LISTENER(hid_listener, hid_listener);
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ZMK_SUBSCRIPTION(hid_listener, keycode_state_changed); |