mirror of
https://github.com/mofeng-git/One-KVM.git
synced 2025-12-12 01:00:29 +08:00
98 lines
3.6 KiB
Python
98 lines
3.6 KiB
Python
# ========================================================================== #
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# #
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# KVMD - The main Pi-KVM daemon. #
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# #
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# Copyright (C) 2018 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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from typing import Dict
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from typing import Set
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from typing import Optional
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import gpiod
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from ... import aiotools
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from ... import aiogp
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from . import BaseUserGpioDriver
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# =====
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class Plugin(BaseUserGpioDriver):
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def __init__(
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self,
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instance_name: str,
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notifier: aiotools.AioNotifier,
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) -> None:
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super().__init__(instance_name, notifier)
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self.__input_pins: Set[int] = set()
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self.__output_pins: Dict[int, Optional[bool]] = {}
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self.__reader: Optional[aiogp.AioPinsReader] = None
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self.__chip: Optional[gpiod.Chip] = None
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self.__output_lines: Dict[int, gpiod.Line] = {}
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def register_input(self, pin: int) -> None:
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self.__input_pins.add(pin)
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def register_output(self, pin: int, initial: Optional[bool]) -> None:
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self.__output_pins[pin] = initial
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def prepare(self) -> None:
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assert self.__reader is None
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self.__reader = aiogp.AioPinsReader(
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path=aiogp.DEVICE_PATH,
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consumer="kvmd/ugpio-gpio/inputs",
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pins=dict.fromkeys(self.__input_pins, False),
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notifier=self._notifier,
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)
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self.__chip = gpiod.Chip(aiogp.DEVICE_PATH)
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for (pin, initial) in self.__output_pins.items():
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line = self.__chip.get_line(pin)
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line.request("kvmd/ugpio-gpio/outputs", gpiod.LINE_REQ_DIR_OUT, default_val=int(initial or False))
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self.__output_lines[pin] = line
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async def run(self) -> None:
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assert self.__reader
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await self.__reader.poll()
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def cleanup(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 read(self, pin: int) -> bool:
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assert self.__reader
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if pin in self.__input_pins:
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return self.__reader.get(pin)
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return bool(self.__output_lines[pin].get_value())
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def write(self, pin: int, state: bool) -> None:
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self.__output_lines[pin].set_value(int(state))
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def __str__(self) -> str:
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return f"GPIO({self._instance_name})"
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__repr__ = __str__
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