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zmk/app/include/zmk/hid.h
Peter Johanson feda96eb40 feat(studio): Initial RPC infrastructure and subsystems. 
* UART and BLE/GATT transports for a protobuf encoded RPC
  request/response protocol.
* Custom framing protocol is used to frame a give message.
* Requests/responses are divided into major "subsystems" which
  handle requests and create response messages.
* Notification support, including mapping local events to RPC
  notifications by a given subsystem.
* Meta responses for "no response" and "unlock needed".
* Initial basic lock state support in a new core section, and allow specifying
  if a given RPC callback requires unlocked state or not.
* Add behavior subsystem with full metadata support and examples of
  using callback to serialize a repeated field without extra stack space needed.

Co-authored-by: Cem Aksoylar <caksoylar@users.noreply.github.com>
2024-08-15 11:45:18 -06:00

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/*
* Copyright (c) 2020 The ZMK Contributors
*
* SPDX-License-Identifier: MIT
*/
#pragma once
#include <zephyr/sys/util.h>
#include <zephyr/usb/usb_device.h>
#include <zephyr/usb/class/usb_hid.h>
#include <zmk/keys.h>
#if IS_ENABLED(CONFIG_ZMK_MOUSE)
#include <zmk/mouse.h>
#endif // IS_ENABLED(CONFIG_ZMK_MOUSE)
#include <dt-bindings/zmk/hid_usage.h>
#include <dt-bindings/zmk/hid_usage_pages.h>
#if IS_ENABLED(CONFIG_ZMK_HID_KEYBOARD_NKRO_EXTENDED_REPORT)
#define ZMK_HID_KEYBOARD_NKRO_MAX_USAGE HID_USAGE_KEY_KEYBOARD_LANG8
#else
#define ZMK_HID_KEYBOARD_NKRO_MAX_USAGE HID_USAGE_KEY_KEYPAD_EQUAL
#endif
#if IS_ENABLED(CONFIG_ZMK_HID_CONSUMER_REPORT_USAGES_BASIC)
#define ZMK_HID_CONSUMER_MAX_USAGE 0xFF
#elif IS_ENABLED(CONFIG_ZMK_HID_CONSUMER_REPORT_USAGES_FULL)
#define ZMK_HID_CONSUMER_MAX_USAGE 0xFFF
#else
#error "Unknown consumer report usages configuration"
#endif
#if IS_ENABLED(CONFIG_ZMK_HID_REPORT_TYPE_NKRO)
#define ZMK_HID_KEYBOARD_MAX_USAGE ZMK_HID_KEYBOARD_NKRO_MAX_USAGE
#elif IS_ENABLED(CONFIG_ZMK_HID_REPORT_TYPE_HKRO)
#define ZMK_HID_KEYBOARD_MAX_USAGE 0xFF
#else
#error "Unknown keyboard report usages configuration"
#endif
#define ZMK_HID_MOUSE_NUM_BUTTONS 0x05
// 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_LEDS 0x01
#define ZMK_HID_REPORT_ID_CONSUMER 0x02
#define ZMK_HID_REPORT_ID_MOUSE 0x03
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),
#if IS_ENABLED(CONFIG_ZMK_HID_INDICATORS)
HID_USAGE_PAGE(HID_USAGE_LED),
HID_USAGE_MIN8(HID_USAGE_LED_NUM_LOCK),
HID_USAGE_MAX8(HID_USAGE_LED_KANA),
HID_REPORT_SIZE(0x01),
HID_REPORT_COUNT(0x05),
HID_OUTPUT(ZMK_HID_MAIN_VAL_DATA | ZMK_HID_MAIN_VAL_VAR | ZMK_HID_MAIN_VAL_ABS),
HID_USAGE_PAGE(HID_USAGE_LED),
HID_REPORT_SIZE(0x03),
HID_REPORT_COUNT(0x01),
HID_OUTPUT(ZMK_HID_MAIN_VAL_CONST | ZMK_HID_MAIN_VAL_VAR | ZMK_HID_MAIN_VAL_ABS),
#endif // IS_ENABLED(CONFIG_ZMK_HID_INDICATORS)
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_MOUSE)
HID_USAGE_PAGE(HID_USAGE_GD),
HID_USAGE(HID_USAGE_GD_MOUSE),
HID_COLLECTION(HID_COLLECTION_APPLICATION),
HID_REPORT_ID(ZMK_HID_REPORT_ID_MOUSE),
HID_USAGE(HID_USAGE_GD_POINTER),
HID_COLLECTION(HID_COLLECTION_PHYSICAL),
HID_USAGE_PAGE(HID_USAGE_BUTTON),
HID_USAGE_MIN8(0x1),
HID_USAGE_MAX8(ZMK_HID_MOUSE_NUM_BUTTONS),
HID_LOGICAL_MIN8(0x00),
HID_LOGICAL_MAX8(0x01),
HID_REPORT_SIZE(0x01),
HID_REPORT_COUNT(0x5),
HID_INPUT(ZMK_HID_MAIN_VAL_DATA | ZMK_HID_MAIN_VAL_VAR | ZMK_HID_MAIN_VAL_ABS),
// Constant padding for the last 3 bits.
HID_REPORT_SIZE(0x03),
HID_REPORT_COUNT(0x01),
HID_INPUT(ZMK_HID_MAIN_VAL_CONST | ZMK_HID_MAIN_VAL_VAR | ZMK_HID_MAIN_VAL_ABS),
// Some OSes ignore pointer devices without X/Y data.
HID_USAGE_PAGE(HID_USAGE_GEN_DESKTOP),
HID_USAGE(HID_USAGE_GD_X),
HID_USAGE(HID_USAGE_GD_Y),
HID_USAGE(HID_USAGE_GD_WHEEL),
HID_LOGICAL_MIN8(-0x7F),
HID_LOGICAL_MAX8(0x7F),
HID_REPORT_SIZE(0x08),
HID_REPORT_COUNT(0x03),
HID_INPUT(ZMK_HID_MAIN_VAL_DATA | ZMK_HID_MAIN_VAL_VAR | ZMK_HID_MAIN_VAL_REL),
HID_END_COLLECTION,
HID_END_COLLECTION,
#endif // IS_ENABLED(CONFIG_ZMK_MOUSE)
};
#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[HID_BOOT_KEY_LEN];
} __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[DIV_ROUND_UP(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;
#if IS_ENABLED(CONFIG_ZMK_HID_INDICATORS)
struct zmk_hid_led_report_body {
uint8_t leds;
} __packed;
struct zmk_hid_led_report {
uint8_t report_id;
struct zmk_hid_led_report_body body;
} __packed;
#endif // IS_ENABLED(CONFIG_ZMK_HID_INDICATORS)
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;
#if IS_ENABLED(CONFIG_ZMK_MOUSE)
struct zmk_hid_mouse_report_body {
zmk_mouse_button_flags_t buttons;
int8_t d_x;
int8_t d_y;
int8_t d_wheel;
} __packed;
struct zmk_hid_mouse_report {
uint8_t report_id;
struct zmk_hid_mouse_report_body body;
} __packed;
#endif // IS_ENABLED(CONFIG_ZMK_MOUSE)
zmk_mod_flags_t zmk_hid_get_explicit_mods(void);
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(void);
int zmk_hid_masked_modifiers_set(zmk_mod_flags_t masked_modifiers);
int zmk_hid_masked_modifiers_clear(void);
int zmk_hid_keyboard_press(zmk_key_t key);
int zmk_hid_keyboard_release(zmk_key_t key);
void zmk_hid_keyboard_clear(void);
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(void);
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);
#if IS_ENABLED(CONFIG_ZMK_MOUSE)
int zmk_hid_mouse_button_press(zmk_mouse_button_t button);
int zmk_hid_mouse_button_release(zmk_mouse_button_t button);
int zmk_hid_mouse_buttons_press(zmk_mouse_button_flags_t buttons);
int zmk_hid_mouse_buttons_release(zmk_mouse_button_flags_t buttons);
void zmk_hid_mouse_clear(void);
#endif // IS_ENABLED(CONFIG_ZMK_MOUSE)
struct zmk_hid_keyboard_report *zmk_hid_get_keyboard_report(void);
struct zmk_hid_consumer_report *zmk_hid_get_consumer_report(void);
#if IS_ENABLED(CONFIG_ZMK_USB_BOOT)
zmk_hid_boot_report_t *zmk_hid_get_boot_report();
#endif
#if IS_ENABLED(CONFIG_ZMK_MOUSE)
struct zmk_hid_mouse_report *zmk_hid_get_mouse_report();
#endif // IS_ENABLED(CONFIG_ZMK_MOUSE)
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