mirror of
https://github.com/mofeng-git/One-KVM.git
synced 2025-12-12 09:10:30 +08:00
117 lines
4.2 KiB
Python
117 lines
4.2 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) 2018-2023 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 Callable
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from typing import Any
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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 ...yamlconf import Option
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from ...validators.os import valid_abs_path
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from ...validators.hw import valid_gpio_pin
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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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device_path: str,
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) -> None:
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super().__init__(instance_name, notifier)
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self.__device_path = device_path
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self.__input_pins: dict[int, aiogp.AioReaderPinParams] = {}
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self.__output_pins: dict[int, (bool | None)] = {}
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self.__reader: (aiogp.AioReader | None) = None
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self.__chip: (gpiod.Chip | None) = None
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self.__output_lines: dict[int, gpiod.Line] = {}
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@classmethod
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def get_plugin_options(cls) -> dict:
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return {
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"device": Option("/dev/gpiochip0", type=valid_abs_path, unpack_as="device_path"),
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}
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@classmethod
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def get_pin_validator(cls) -> Callable[[Any], Any]:
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return valid_gpio_pin
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def register_input(self, pin: str, debounce: float) -> None:
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self.__input_pins[int(pin)] = aiogp.AioReaderPinParams(False, debounce)
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def register_output(self, pin: str, initial: (bool | None)) -> None:
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self.__output_pins[int(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.AioReader(
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path=self.__device_path,
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consumer="kvmd::gpio::inputs",
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pins=self.__input_pins,
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notifier=self._notifier,
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)
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self.__chip = gpiod.Chip(self.__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::gpio::outputs", gpiod.LINE_REQ_DIR_OUT, default_vals=[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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async 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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async def read(self, pin: str) -> bool:
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assert self.__reader
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pin_int = int(pin)
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if pin_int in self.__input_pins:
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return self.__reader.get(pin_int)
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return bool(self.__output_lines[pin_int].get_value())
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async def write(self, pin: str, state: bool) -> None:
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self.__output_lines[int(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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