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# ========================================================================== #
# #
# KVMD - The main Pi-KVM daemon. #
# #
# Copyright (C) 2018 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 Dict
from typing import Set
from typing import Optional
from ... import aiotools
from ... import gpio
from ...yamlconf import Option
from ...validators.basic import valid_bool
from ...validators.basic import valid_float_f01
from . import BaseUserGpioDriver
# =====
class Plugin(BaseUserGpioDriver):
def __init__(
self,
instance_name: str,
notifier: aiotools.AioNotifier,
edge_detection: bool,
state_poll: float,
) -> None:
super().__init__(instance_name, notifier)
self.__edge_detection = edge_detection
self.__state_poll = state_poll
self.__input_pins: Set[int] = set()
self.__output_pins: Dict[int, Optional[bool]] = {}
self.__reader: Optional[gpio.BatchReader] = None
@classmethod
def get_plugin_options(cls) -> Dict:
return {
"edge_detection": Option(False, type=valid_bool),
"state_poll": Option(0.1, type=valid_float_f01),
}
def register_input(self, pin: int) -> None:
self.__input_pins.add(pin)
def register_output(self, pin: int, initial: Optional[bool]) -> None:
self.__output_pins[pin] = initial
def prepare(self) -> None:
assert self.__reader is None
self.__reader = gpio.BatchReader(
pins=set([
*map(gpio.set_input, self.__input_pins),
*[
gpio.set_output(pin, initial)
for (pin, initial) in self.__output_pins.items()
],
]),
edge_detection=self.__edge_detection,
interval=self.__state_poll,
notifier=self._notifier,
)
async def run(self) -> None:
assert self.__reader
await self.__reader.poll()
def cleanup(self) -> None:
for (pin, initial) in self.__output_pins.items():
if initial is not None:
gpio.write(pin, initial)
def read(self, pin: int) -> bool:
return gpio.read(pin)
def write(self, pin: int, state: bool) -> None:
gpio.write(pin, state)
def __str__(self) -> str:
return f"GPIO({self._instance_name})"
__repr__ = __str__
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