mirror of
https://github.com/mofeng-git/One-KVM.git
synced 2025-12-12 01:00:29 +08:00
129 lines
4.9 KiB
Python
129 lines
4.9 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) 2018-2024 Maxim Devaev <mdevaev@gmail.com> #
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# Shantur Rathore <i@shantur.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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from periphery import PWM
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from ...logging import get_logger
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from ... import tools
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from ... import aiotools
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from ...yamlconf import Option
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from ...validators.basic import valid_int_f0
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from ...validators.hw import valid_gpio_pin
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from . import GpioDriverOfflineError
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from . import UserGpioModes
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from . import BaseUserGpioDriver
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# =====
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class Plugin(BaseUserGpioDriver):
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def __init__( # pylint: disable=super-init-not-called
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self,
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instance_name: str,
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notifier: aiotools.AioNotifier,
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chip: int,
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period: int,
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duty_cycle_push: int,
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duty_cycle_release: int,
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) -> None:
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super().__init__(instance_name, notifier)
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self.__chip = chip
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self.__period = period
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self.__duty_cycle_push = duty_cycle_push
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self.__duty_cycle_release = duty_cycle_release
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self.__channels: dict[int, (bool | None)] = {}
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self.__pwms: dict[int, PWM] = {}
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@classmethod
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def get_plugin_options(cls) -> dict:
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return {
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"chip": Option(0, type=valid_int_f0),
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"period": Option(20000000, type=valid_int_f0),
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"duty_cycle_push": Option(1500000, type=valid_int_f0),
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"duty_cycle_release": Option(1000000, type=valid_int_f0),
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}
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@classmethod
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def get_modes(cls) -> set[str]:
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return set([UserGpioModes.OUTPUT])
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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_output(self, pin: str, initial: (bool | None)) -> None:
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self.__channels[int(pin)] = initial
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def prepare(self) -> None:
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logger = get_logger(0)
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for (pin, initial) in self.__channels.items():
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try:
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logger.info("Probing pwm chip %d channel %d ...", self.__chip, pin)
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pwm = PWM(self.__chip, pin)
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self.__pwms[pin] = pwm
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pwm.period_ns = self.__period
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pwm.duty_cycle_ns = self.__get_duty_cycle(bool(initial))
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pwm.enable()
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except Exception as ex:
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logger.error("Can't get PWM chip %d channel %d: %s",
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self.__chip, pin, tools.efmt(ex))
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async def cleanup(self) -> None:
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for (pin, pwm) in self.__pwms.items():
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try:
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pwm.disable()
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pwm.close()
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except Exception as ex:
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get_logger(0).error("Can't cleanup PWM chip %d channel %d: %s",
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self.__chip, pin, tools.efmt(ex))
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async def read(self, pin: str) -> bool:
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try:
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return (self.__pwms[int(pin)].duty_cycle_ns == self.__duty_cycle_push)
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except Exception:
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raise GpioDriverOfflineError(self)
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async def write(self, pin: str, state: bool) -> None:
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try:
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self.__pwms[int(pin)].duty_cycle_ns = self.__get_duty_cycle(state)
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except Exception:
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raise GpioDriverOfflineError(self)
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def __get_duty_cycle(self, state: bool) -> int:
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return (self.__duty_cycle_push if state else self.__duty_cycle_release)
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def __str__(self) -> str:
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return f"PWM({self._instance_name})"
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__repr__ = __str__
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