mirror of
https://github.com/mofeng-git/One-KVM.git
synced 2025-12-12 17:20:30 +08:00
6e24efc81e
* Add ch9329 plugin * refactoring ch9329 * refactor ch9329 and cleanup * refactoring * fixing lint errors * clarifying list type
63 lines
2.7 KiB
Python
63 lines
2.7 KiB
Python
# ========================================================================== #
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# #
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# KVMD - The main PiKVM daemon. #
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# #
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# Copyright (C) 2018-2022 Maxim Devaev <mdevaev@gmail.com> #
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# #
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# This program is free software: you can redistribute it and/or modify #
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# it under the terms of the GNU General Public License as published by #
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# the Free Software Foundation, either version 3 of the License, or #
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# (at your option) any later version. #
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# #
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# This program is distributed in the hope that it will be useful, #
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# but WITHOUT ANY WARRANTY; without even the implied warranty of #
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
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# GNU General Public License for more details. #
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# #
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# You should have received a copy of the GNU General Public License #
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# along with this program. If not, see <https://www.gnu.org/licenses/>. #
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# #
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# ========================================================================== #
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import os
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import serial
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class TTY:
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def __init__(self, device_path: str, speed: int, read_timeout: float) -> None:
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self.__tty = serial.Serial(device_path, speed, timeout=read_timeout)
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self.__device_path = device_path
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def has_device(self) -> bool:
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return os.path.exists(self.__device_path)
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def send(self, cmd: list[int]) -> list[int]:
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cmd = self.__wrap_cmd(cmd)
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self.__tty.write(serial.to_bytes(cmd))
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data = list(self.__tty.read(5))
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if data and data[4]:
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more_data = list(self.__tty.read(data[4] + 1))
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data.extend(more_data)
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return data
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def check_res(self, res: list[int]) -> bool:
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res_sum = res.pop()
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return (self.__checksum(res) == res_sum)
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def __wrap_cmd(self, cmd: list[int]) -> list[int]:
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cmd.insert(0, 0xAB)
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cmd.insert(0, 0x57)
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cmd.append(self.__checksum(cmd))
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return cmd
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def __checksum(self, cmd: list[int]) -> int:
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return sum(cmd) % 256
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def get_info() -> list[int]:
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return [0x00, 0x01, 0x00]
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# RESET = [0x00,0x0F,0x00]
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# GET_INFO = [0x00,0x01,0x00]
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