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# ========================================================================== #
# #
# KVMD - The main PiKVM daemon. #
# #
# Copyright (C) 2018-2022 Maxim Devaev <[email protected]> #
# #
# This program is free software: you can redistribute it and/or modify #
# it under the terms of the GNU General Public License as published by #
# the Free Software Foundation, either version 3 of the License, or #
# (at your option) any later version. #
# #
# This program is distributed in the hope that it will be useful, #
# but WITHOUT ANY WARRANTY; without even the implied warranty of #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
# GNU General Public License for more details. #
# #
# You should have received a copy of the GNU General Public License #
# along with this program. If not, see <https://www.gnu.org/licenses/>. #
# #
# ========================================================================== #
from typing import Callable
from typing import Any
from ...errors import OperationError
from ... import aiotools
from .. import BasePlugin
from .. import get_plugin_class
# =====
class GpioError(Exception):
pass
class GpioOperationError(OperationError, GpioError):
pass
class GpioDriverOfflineError(GpioOperationError):
def __init__(self, driver: "BaseUserGpioDriver") -> None:
super().__init__(f"GPIO driver {driver} is offline")
# =====
class UserGpioModes:
INPUT = "input"
OUTPUT = "output"
ALL = set([INPUT, OUTPUT])
# =====
class BaseUserGpioDriver(BasePlugin):
def __init__( # pylint: disable=super-init-not-called
self,
instance_name: str,
notifier: aiotools.AioNotifier,
**_: Any,
) -> None:
self._instance_name = instance_name
self._notifier = notifier
def get_instance_id(self) -> str:
return self._instance_name
@classmethod
def get_modes(cls) -> set[str]:
return set(UserGpioModes.ALL)
@classmethod
def get_pin_validator(cls) -> Callable[[Any], Any]:
# XXX: The returned value will be forcibly converted to a string
# in kvmd/apps/kvmd/ugpio.py, i.e. AFTER validation.
raise NotImplementedError
def register_input(self, pin: str, debounce: float) -> None:
_ = pin
_ = debounce
def register_output(self, pin: str, initial: (bool | None)) -> None:
_ = pin
_ = initial
def prepare(self) -> None:
pass
async def run(self) -> None:
await aiotools.wait_infinite()
async def cleanup(self) -> None:
pass
async def read(self, pin: str) -> bool:
raise NotImplementedError
async def write(self, pin: str, state: bool) -> None:
raise NotImplementedError
# =====
def get_ugpio_driver_class(name: str) -> type[BaseUserGpioDriver]:
return get_plugin_class("ugpio", name) # type: ignore
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