kb01/zmk
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions
zmk/app/include/zmk/hid.h
Andrew Childs 2a0fd6c426
Boot protocol support 
Based on PR#1140 with several changes as described in this comment: https://github.com/zmkfirmware/zmk/pull/1140#issuecomment-1237655563

* Minimize the api changes for bluetooth by keeping
  zmk_hid_get_keyboard_report() and returning the .body like before.
* Keeping the logic about "full" vs "body" entirely within the usb code path.
* The endpoint now calls either zmk_usb_hid_send_keyboard_report() and
  zmk_usb_hid_send_consumer_report() instead of zmk_usb_hid_send_report(...).
    - These functions now internally dispatch on protocol to either
      zmk_hid_get_keyboard_report() or a new function for boot reports
      zmk_hid_get_boot_report().
    - There's a change here from the PR version in the behavior of get_report():
      when in boot protocol, don't include the report id. I believe this is
      correct, in that implicit boot protocol report descriptor does not use
      multiple reports, so any boot protocol report should not include the report
      id field.
* Use a single definition of a boot report, used for regular reports in
  non-6KRO, and for rollover in all branches.
* Handle gaps in the zmk report when producing a boot report in HKRO mode. For
  .example, if it was 8KRO, it would be possible to have the state 0 0 0 0 0 0 0
  17 (by pressing 8 keys, and letting go of the first 7). Copying the first 6
  bytes would not show up the single pressed key.
2023-11-11 14:59:02 +09:00

197 lines
6.2 KiB
C
Raw Blame History

/*
* Copyright (c) 2020 The ZMK Contributors
*
* SPDX-License-Identifier: MIT
*/
#pragma once
#include <zephyr/usb/usb_device.h>
#include <zephyr/usb/class/usb_hid.h>
#include <zmk/keys.h>
#include <dt-bindings/zmk/hid_usage.h>
#include <dt-bindings/zmk/hid_usage_pages.h>
#define ZMK_HID_KEYBOARD_NKRO_MAX_USAGE HID_USAGE_KEY_KEYPAD_EQUAL
// See https://www.usb.org/sites/default/files/hid1_11.pdf section 6.2.2.4 Main Items
#define ZMK_HID_MAIN_VAL_DATA (0x00 << 0)
#define ZMK_HID_MAIN_VAL_CONST (0x01 << 0)
#define ZMK_HID_MAIN_VAL_ARRAY (0x00 << 1)
#define ZMK_HID_MAIN_VAL_VAR (0x01 << 1)
#define ZMK_HID_MAIN_VAL_ABS (0x00 << 2)
#define ZMK_HID_MAIN_VAL_REL (0x01 << 2)
#define ZMK_HID_MAIN_VAL_NO_WRAP (0x00 << 3)
#define ZMK_HID_MAIN_VAL_WRAP (0x01 << 3)
#define ZMK_HID_MAIN_VAL_LIN (0x00 << 4)
#define ZMK_HID_MAIN_VAL_NON_LIN (0x01 << 4)
#define ZMK_HID_MAIN_VAL_PREFERRED (0x00 << 5)
#define ZMK_HID_MAIN_VAL_NO_PREFERRED (0x01 << 5)
#define ZMK_HID_MAIN_VAL_NO_NULL (0x00 << 6)
#define ZMK_HID_MAIN_VAL_NULL (0x01 << 6)
#define ZMK_HID_MAIN_VAL_NON_VOL (0x00 << 7)
#define ZMK_HID_MAIN_VAL_VOL (0x01 << 7)
#define ZMK_HID_MAIN_VAL_BIT_FIELD (0x00 << 8)
#define ZMK_HID_MAIN_VAL_BUFFERED_BYTES (0x01 << 8)
#define ZMK_HID_REPORT_ID_KEYBOARD 0x01
#define ZMK_HID_REPORT_ID_CONSUMER 0x02
static const uint8_t zmk_hid_report_desc[] = {
HID_USAGE_PAGE(HID_USAGE_GEN_DESKTOP),
HID_USAGE(HID_USAGE_GD_KEYBOARD),
HID_COLLECTION(HID_COLLECTION_APPLICATION),
HID_REPORT_ID(ZMK_HID_REPORT_ID_KEYBOARD),
HID_USAGE_PAGE(HID_USAGE_KEY),
HID_USAGE_MIN8(HID_USAGE_KEY_KEYBOARD_LEFTCONTROL),
HID_USAGE_MAX8(HID_USAGE_KEY_KEYBOARD_RIGHT_GUI),
HID_LOGICAL_MIN8(0x00),
HID_LOGICAL_MAX8(0x01),
HID_REPORT_SIZE(0x01),
HID_REPORT_COUNT(0x08),
HID_INPUT(ZMK_HID_MAIN_VAL_DATA | ZMK_HID_MAIN_VAL_VAR | ZMK_HID_MAIN_VAL_ABS),
HID_USAGE_PAGE(HID_USAGE_KEY),
HID_REPORT_SIZE(0x08),
HID_REPORT_COUNT(0x01),
HID_INPUT(ZMK_HID_MAIN_VAL_CONST | ZMK_HID_MAIN_VAL_VAR | ZMK_HID_MAIN_VAL_ABS),
HID_USAGE_PAGE(HID_USAGE_KEY),
#if IS_ENABLED(CONFIG_ZMK_HID_REPORT_TYPE_NKRO)
HID_LOGICAL_MIN8(0x00),
HID_LOGICAL_MAX8(0x01),
HID_USAGE_MIN8(0x00),
HID_USAGE_MAX8(ZMK_HID_KEYBOARD_NKRO_MAX_USAGE),
HID_REPORT_SIZE(0x01),
HID_REPORT_COUNT(ZMK_HID_KEYBOARD_NKRO_MAX_USAGE + 1),
HID_INPUT(ZMK_HID_MAIN_VAL_DATA | ZMK_HID_MAIN_VAL_VAR | ZMK_HID_MAIN_VAL_ABS),
#elif IS_ENABLED(CONFIG_ZMK_HID_REPORT_TYPE_HKRO)
HID_LOGICAL_MIN8(0x00),
HID_LOGICAL_MAX16(0xFF, 0x00),
HID_USAGE_MIN8(0x00),
HID_USAGE_MAX8(0xFF),
HID_REPORT_SIZE(0x08),
HID_REPORT_COUNT(CONFIG_ZMK_HID_KEYBOARD_REPORT_SIZE),
HID_INPUT(ZMK_HID_MAIN_VAL_DATA | ZMK_HID_MAIN_VAL_ARRAY | ZMK_HID_MAIN_VAL_ABS),
#else
#error "A proper HID report type must be selected"
#endif
HID_END_COLLECTION,
HID_USAGE_PAGE(HID_USAGE_CONSUMER),
HID_USAGE(HID_USAGE_CONSUMER_CONSUMER_CONTROL),
HID_COLLECTION(HID_COLLECTION_APPLICATION),
HID_REPORT_ID(ZMK_HID_REPORT_ID_CONSUMER),
HID_USAGE_PAGE(HID_USAGE_CONSUMER),
#if IS_ENABLED(CONFIG_ZMK_HID_CONSUMER_REPORT_USAGES_BASIC)
HID_LOGICAL_MIN8(0x00),
HID_LOGICAL_MAX16(0xFF, 0x00),
HID_USAGE_MIN8(0x00),
HID_USAGE_MAX8(0xFF),
HID_REPORT_SIZE(0x08),
#elif IS_ENABLED(CONFIG_ZMK_HID_CONSUMER_REPORT_USAGES_FULL)
HID_LOGICAL_MIN8(0x00),
HID_LOGICAL_MAX16(0xFF, 0x0F),
HID_USAGE_MIN8(0x00),
HID_USAGE_MAX16(0xFF, 0x0F),
HID_REPORT_SIZE(0x10),
#else
#error "A proper consumer HID report usage range must be selected"
#endif
HID_REPORT_COUNT(CONFIG_ZMK_HID_CONSUMER_REPORT_SIZE),
HID_INPUT(ZMK_HID_MAIN_VAL_DATA | ZMK_HID_MAIN_VAL_ARRAY | ZMK_HID_MAIN_VAL_ABS),
HID_END_COLLECTION,
};
#if IS_ENABLED(CONFIG_ZMK_USB_BOOT)
#define HID_ERROR_ROLLOVER 0x1
#define HID_BOOT_KEY_LEN 6
#if IS_ENABLED(CONFIG_ZMK_HID_REPORT_TYPE_HKRO) && \
CONFIG_ZMK_HID_KEYBOARD_REPORT_SIZE == HID_BOOT_KEY_LEN
typedef struct zmk_hid_keyboard_report_body zmk_hid_boot_report_t;
#else
struct zmk_hid_boot_report {
zmk_mod_flags_t modifiers;
uint8_t _reserved;
uint8_t keys[6];
} __packed;
typedef struct zmk_hid_boot_report zmk_hid_boot_report_t;
#endif
#endif
struct zmk_hid_keyboard_report_body {
zmk_mod_flags_t modifiers;
uint8_t _reserved;
#if IS_ENABLED(CONFIG_ZMK_HID_REPORT_TYPE_NKRO)
uint8_t keys[(ZMK_HID_KEYBOARD_NKRO_MAX_USAGE + 1) / 8];
#elif IS_ENABLED(CONFIG_ZMK_HID_REPORT_TYPE_HKRO)
uint8_t keys[CONFIG_ZMK_HID_KEYBOARD_REPORT_SIZE];
#endif
} __packed;
struct zmk_hid_keyboard_report {
uint8_t report_id;
struct zmk_hid_keyboard_report_body body;
} __packed;
struct zmk_hid_consumer_report_body {
#if IS_ENABLED(CONFIG_ZMK_HID_CONSUMER_REPORT_USAGES_BASIC)
uint8_t keys[CONFIG_ZMK_HID_CONSUMER_REPORT_SIZE];
#elif IS_ENABLED(CONFIG_ZMK_HID_CONSUMER_REPORT_USAGES_FULL)
uint16_t keys[CONFIG_ZMK_HID_CONSUMER_REPORT_SIZE];
#endif
} __packed;
struct zmk_hid_consumer_report {
uint8_t report_id;
struct zmk_hid_consumer_report_body body;
} __packed;
zmk_mod_flags_t zmk_hid_get_explicit_mods();
int zmk_hid_register_mod(zmk_mod_t modifier);
int zmk_hid_unregister_mod(zmk_mod_t modifier);
bool zmk_hid_mod_is_pressed(zmk_mod_t modifier);
int zmk_hid_register_mods(zmk_mod_flags_t explicit_modifiers);
int zmk_hid_unregister_mods(zmk_mod_flags_t explicit_modifiers);
int zmk_hid_implicit_modifiers_press(zmk_mod_flags_t implicit_modifiers);
int zmk_hid_implicit_modifiers_release();
int zmk_hid_masked_modifiers_set(zmk_mod_flags_t masked_modifiers);
int zmk_hid_masked_modifiers_clear();
int zmk_hid_keyboard_press(zmk_key_t key);
int zmk_hid_keyboard_release(zmk_key_t key);
void zmk_hid_keyboard_clear();
bool zmk_hid_keyboard_is_pressed(zmk_key_t key);
int zmk_hid_consumer_press(zmk_key_t key);
int zmk_hid_consumer_release(zmk_key_t key);
void zmk_hid_consumer_clear();
bool zmk_hid_consumer_is_pressed(zmk_key_t key);
int zmk_hid_press(uint32_t usage);
int zmk_hid_release(uint32_t usage);
bool zmk_hid_is_pressed(uint32_t usage);
struct zmk_hid_keyboard_report *zmk_hid_get_keyboard_report();
struct zmk_hid_consumer_report *zmk_hid_get_consumer_report();
#if IS_ENABLED(CONFIG_ZMK_USB_BOOT)
zmk_hid_boot_report_t *zmk_hid_get_boot_report();
#endif
Reference in a new issue View git blame Copy permalink