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86 lines
2.9 KiB
86 lines
2.9 KiB
/* |
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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); |