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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 Dict
from typing import AsyncGenerator
from typing import Optional
import gpiod
from ...logging import get_logger
from ... import aiotools
from ... import aiogp
from ...yamlconf import Option
from ...validators.basic import valid_bool
from ...validators.basic import valid_float_f0
from ...validators.basic import valid_float_f01
from ...validators.os import valid_abs_path
from ...validators.hw import valid_gpio_pin
from . import AtxIsBusyError
from . import BaseAtx
# =====
class Plugin(BaseAtx): # pylint: disable=too-many-instance-attributes
def __init__( # pylint: disable=too-many-arguments,super-init-not-called
self,
device_path: str,
power_led_pin: int,
power_led_inverted: bool,
power_led_debounce: float,
hdd_led_pin: int,
hdd_led_inverted: bool,
hdd_led_debounce: float,
power_switch_pin: int,
reset_switch_pin: int,
click_delay: float,
long_click_delay: float,
) -> None:
self.__device_path = device_path
self.__power_led_pin = power_led_pin
self.__hdd_led_pin = hdd_led_pin
self.__power_switch_pin = power_switch_pin
self.__reset_switch_pin = reset_switch_pin
self.__click_delay = click_delay
self.__long_click_delay = long_click_delay
self.__notifier = aiotools.AioNotifier()
self.__region = aiotools.AioExclusiveRegion(AtxIsBusyError, self.__notifier)
self.__chip: Optional[gpiod.Chip] = None
self.__power_switch_line: Optional[gpiod.Line] = None
self.__reset_switch_line: Optional[gpiod.Line] = None
self.__reader = aiogp.AioReader(
path=self.__device_path,
consumer="kvmd::atx::leds",
pins={
power_led_pin: aiogp.AioReaderPinParams(power_led_inverted, power_led_debounce),
hdd_led_pin: aiogp.AioReaderPinParams(hdd_led_inverted, hdd_led_debounce),
},
notifier=self.__notifier,
)
@classmethod
def get_plugin_options(cls) -> Dict:
return {
"device": Option("/dev/gpiochip0", type=valid_abs_path, unpack_as="device_path"),
"power_led_pin": Option(24, type=valid_gpio_pin),
"power_led_inverted": Option(False, type=valid_bool),
"power_led_debounce": Option(0.1, type=valid_float_f0),
"hdd_led_pin": Option(22, type=valid_gpio_pin),
"hdd_led_inverted": Option(False, type=valid_bool),
"hdd_led_debounce": Option(0.1, type=valid_float_f0),
"power_switch_pin": Option(23, type=valid_gpio_pin),
"reset_switch_pin": Option(27, type=valid_gpio_pin),
"click_delay": Option(0.1, type=valid_float_f01),
"long_click_delay": Option(5.5, type=valid_float_f01),
}
def sysprep(self) -> None:
assert self.__chip is None
assert self.__power_switch_line is None
assert self.__reset_switch_line is None
self.__chip = gpiod.Chip(self.__device_path)
self.__power_switch_line = self.__chip.get_line(self.__power_switch_pin)
self.__power_switch_line.request("kvmd::atx::power_switch", gpiod.LINE_REQ_DIR_OUT, default_vals=[0])
self.__reset_switch_line = self.__chip.get_line(self.__reset_switch_pin)
self.__reset_switch_line.request("kvmd::atx::reset_switch", gpiod.LINE_REQ_DIR_OUT, default_vals=[0])
async def get_state(self) -> Dict:
return {
"enabled": True,
"busy": self.__region.is_busy(),
"leds": {
"power": self.__reader.get(self.__power_led_pin),
"hdd": self.__reader.get(self.__hdd_led_pin),
},
}
async def poll_state(self) -> AsyncGenerator[Dict, None]:
prev_state: Dict = {}
while True:
state = await self.get_state()
if state != prev_state:
yield state
prev_state = state
await self.__notifier.wait()
async def systask(self) -> None:
await self.__reader.poll()
async def cleanup(self) -> None:
if self.__chip:
try:
self.__chip.close()
except Exception:
pass
# =====
async def power_on(self, wait: bool) -> None:
if not (await self.__get_power()):
await self.click_power(wait)
async def power_off(self, wait: bool) -> None:
if (await self.__get_power()):
await self.click_power(wait)
async def power_off_hard(self, wait: bool) -> None:
if (await self.__get_power()):
await self.click_power_long(wait)
async def power_reset_hard(self, wait: bool) -> None:
if (await self.__get_power()):
await self.click_reset(wait)
# =====
async def click_power(self, wait: bool) -> None:
await self.__click("power", self.__power_switch_line, self.__click_delay, wait)
async def click_power_long(self, wait: bool) -> None:
await self.__click("power_long", self.__power_switch_line, self.__long_click_delay, wait)
async def click_reset(self, wait: bool) -> None:
await self.__click("reset", self.__reset_switch_line, self.__click_delay, wait)
# =====
async def __get_power(self) -> bool:
return (await self.get_state())["leds"]["power"]
@aiotools.atomic_fg
async def __click(self, name: str, line: gpiod.Line, delay: float, wait: bool) -> None:
if wait:
async with self.__region:
await self.__inner_click(name, line, delay)
else:
await aiotools.run_region_task(
f"Can't perform ATX {name} click or operation was not completed",
self.__region, self.__inner_click, name, line, delay,
)
@aiotools.atomic_fg
async def __inner_click(self, name: str, line: gpiod.Line, delay: float) -> None:
await aiogp.pulse(line, delay, 1)
get_logger(0).info("Clicked ATX button %r", name)
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