mirror of
https://github.com/mofeng-git/One-KVM.git
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80 lines
3.3 KiB
Python
80 lines
3.3 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 gpiod
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from .... import aiogp
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# =====
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class Gpio: # pylint: disable=too-many-instance-attributes
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def __init__(
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self,
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device_path: str,
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target_pin: int,
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reset_pin: int,
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reset_inverted: bool,
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reset_delay: float,
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) -> None:
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self.__device_path = device_path
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self.__target_pin = target_pin
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self.__reset_pin = reset_pin
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self.__reset_inverted = reset_inverted
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self.__reset_delay = reset_delay
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self.__chip: (gpiod.Chip | None) = None
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self.__target_line: (gpiod.Line | None) = None
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self.__reset_line: (gpiod.Line | None) = None
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def open(self) -> None:
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assert self.__chip is None
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assert self.__target_line is None
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assert self.__reset_line is None
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self.__chip = gpiod.Chip(self.__device_path)
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self.__target_line = self.__chip.get_line(self.__target_pin)
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self.__target_line.request("kvmd::msd::target", gpiod.LINE_REQ_DIR_OUT, default_vals=[0])
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self.__reset_line = self.__chip.get_line(self.__reset_pin)
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self.__reset_line.request("kvmd::msd::reset", gpiod.LINE_REQ_DIR_OUT, default_vals=[int(self.__reset_inverted)])
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def close(self) -> None:
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if self.__chip:
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try:
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self.__chip.close()
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except Exception:
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pass
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def switch_to_local(self) -> None:
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assert self.__target_line
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self.__target_line.set_value(0)
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def switch_to_server(self) -> None:
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assert self.__target_line
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self.__target_line.set_value(1)
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async def reset(self) -> None:
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assert self.__reset_line
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await aiogp.pulse(self.__reset_line, self.__reset_delay, 0, self.__reset_inverted)
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