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# ========================================================================== #
# #
# KVMD - The main Pi-KVM daemon. #
# #
# Copyright (C) 2018 Maxim Devaev <[email protected]> #
# #
# This program is free software: you can redistribute it and/or modify #
# it under the terms of the GNU General Public License as published by #
# the Free Software Foundation, either version 3 of the License, or #
# (at your option) any later version. #
# #
# This program is distributed in the hope that it will be useful, #
# but WITHOUT ANY WARRANTY; without even the implied warranty of #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
# GNU General Public License for more details. #
# #
# You should have received a copy of the GNU General Public License #
# along with this program. If not, see <https://www.gnu.org/licenses/>. #
# #
# ========================================================================== #
from typing import Optional
from . import Hid
# =====
def make_keyboard_hid(report_id: Optional[int]=None) -> Hid:
return Hid(
protocol=1, # Keyboard protocol
subclass=1, # Boot interface subclass
report_length=8,
report_descriptor=bytes([
# Logitech descriptor. It's very similar to https://www.kernel.org/doc/Documentation/usb/gadget_hid.txt
# Dumped using usbhid-dump; parsed using https://eleccelerator.com/usbdescreqparser
# Keyboard
0x05, 0x01, # USAGE_PAGE (Generic Desktop)
0x09, 0x06, # USAGE (Keyboard)
0xA1, 0x01, # COLLECTION (Application)
# Report ID
*([0x85, report_id] if report_id is not None else []),
# Modifiers
0x05, 0x07, # USAGE_PAGE (Keyboard)
0x19, 0xE0, # USAGE_MINIMUM (Keyboard LeftControl)
0x29, 0xE7, # USAGE_MAXIMUM (Keyboard Right GUI)
0x15, 0x00, # LOGICAL_MINIMUM (0)
0x25, 0x01, # LOGICAL_MAXIMUM (1)
0x75, 0x01, # REPORT_SIZE (1)
0x95, 0x08, # REPORT_COUNT (8)
0x81, 0x02, # INPUT (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
# Reserved byte
0x95, 0x01, # REPORT_COUNT (1)
0x75, 0x08, # REPORT_SIZE (8)
0x81, 0x01, # INPUT (Const,Array,Abs,No Wrap,Linear,Preferred State,No Null Position)
# LEDs output
0x95, 0x05, # REPORT_COUNT (5)
0x75, 0x01, # REPORT_SIZE (1)
0x05, 0x08, # USAGE_PAGE (LEDs)
0x19, 0x01, # USAGE_MINIMUM (Num Lock)
0x29, 0x05, # USAGE_MAXIMUM (Kana)
0x91, 0x02, # OUTPUT (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position,Non-volatile)
# Reserved 3 bits in output
0x95, 0x01, # REPORT_COUNT (1)
0x75, 0x03, # REPORT_SIZE (3)
0x91, 0x01, # OUTPUT (Const,Array,Abs,No Wrap,Linear,Preferred State,No Null Position,Non-volatile)
# 6 keys
0x95, 0x06, # REPORT_COUNT (6)
0x75, 0x08, # REPORT_SIZE (8)
0x15, 0x00, # LOGICAL_MINIMUM (0)
0x26, 0xFF, 0x00, # LOGICAL_MAXIMUM (0xFF)
0x05, 0x07, # USAGE_PAGE (Keyboard)
0x19, 0x00, # USAGE_MINIMUM (Reserved)
0x2A, 0xFF, 0x00, # USAGE_MAXIMUM (0xFF)
0x81, 0x00, # INPUT (Data,Array,Abs,No Wrap,Linear,Preferred State,No Null Position)
0xC0, # END_COLLECTION
]),
)
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