blob: 4242b1cba91e72cc71328d260295fd148c4d9449 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
# ========================================================================== #
# #
# KVMD - The main PiKVM daemon. #
# #
# Copyright (C) 2018-2022 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/>. #
# #
# ========================================================================== #
import os
from . import env
# =====
def find_udc(udc: str) -> str:
path = f"{env.SYSFS_PREFIX}/sys/class/udc"
candidates = sorted(os.listdir(path))
if not udc:
if len(candidates) == 0:
raise RuntimeError("Can't find any UDC")
udc = candidates[0]
elif udc not in candidates:
raise RuntimeError(f"Can't find selected UDC: {udc}")
return udc # fe980000.usb
|
