GithubFollow/One-KVM
1
0
Fork 0
mirror of https://github.com/mofeng-git/One-KVM.git synced 2025-12-12 01:00:29 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

using libgpiod for the gpio atx

Browse Source
This commit is contained in:
Devaev Maxim 2020-09-13 10:47:53 +03:00
parent bddabc4742
commit 002823b6e1
4 changed files with 148 additions and 62 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

101
kvmd/aiogp.py Normal file
View File

@ -0,0 +1,101 @@
# ========================================================================== #
# #
# KVMD - The main Pi-KVM daemon. #
# #
# Copyright (C) 2018 Maxim Devaev <mdevaev@gmail.com> #
# #
# 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/>. #
# #
# ========================================================================== #
import asyncio
import threading
from typing import List
from typing import Optional
import gpiod
from . import aiotools
# =====
class AioPinsReader(threading.Thread):
def __init__(
self,
path: str,
consumer: str,
pins: List[int],
inverted: List[bool],
notifier: aiotools.AioNotifier,
) -> None:
assert len(pins) == len(inverted)
super().__init__(daemon=True)
self.__path = path
self.__consumer = consumer
self.__pins = pins
self.__inverted = dict(zip(pins, inverted))
self.__notifier = notifier
self.__state = dict.fromkeys(pins, False)
self.__stop_event = threading.Event()
self.__loop: Optional[asyncio.AbstractEventLoop] = None
def get(self, pin: int) -> bool:
return (self.__state[pin] ^ self.__inverted[pin])
async def poll(self) -> None:
if not self.__pins:
await aiotools.wait_infinite()
else:
assert self.__loop is None
self.__loop = asyncio.get_running_loop()
self.start()
try:
await aiotools.run_async(self.join)
finally:
self.__stop_event.set()
await aiotools.run_async(self.join)
def run(self) -> None:
assert self.__loop
with gpiod.Chip(self.__path) as chip:
lines = chip.get_lines(self.__pins)
lines.request(self.__consumer, gpiod.LINE_REQ_EV_BOTH_EDGES)
lines.event_wait(nsec=1)
self.__state = {
pin: bool(value)
for (pin, value) in zip(self.__pins, lines.get_values())
}
self.__loop.call_soon_threadsafe(self.__notifier.notify_sync)
while not self.__stop_event.is_set():
ev_lines = lines.event_wait(10)
if ev_lines:
for ev_lines in lines.event_wait(1):
for ev_line in ev_lines:
event = ev_line.event_read()
if event.type == gpiod.LineEvent.RISING_EDGE:
value = True
elif event.type == gpiod.LineEvent.FALLING_EDGE:
value = False
else:
raise RuntimeError(f"Invalid event {event} type: {event.type}")
self.__state[event.source.offset()] = value
self.__loop.call_soon_threadsafe(self.__notifier.notify_sync)

3
kvmd/aiotools.py
View File

@ -97,6 +97,9 @@ class AioNotifier:
async def notify(self) -> None:
await self.__queue.put(None)
def notify_sync(self) -> None:
self.__queue.put_nowait(None)
async def wait(self) -> None:
await self.__queue.get()
while not self.__queue.empty():

25
kvmd/apps/cleanup/__init__.py
View File

@ -33,30 +33,10 @@ from ...logging import get_logger
from ...yamlconf import Section
from ... import gpio
from .. import init
# =====
def _clear_gpio(config: Section) -> None:
logger = get_logger(0)
with gpio.bcm():
for (name, pin) in [
*([
("atx_gpio/power_switch", config.atx.power_switch_pin),
("atx_gpio/reset_switch", config.atx.reset_switch_pin),
] if config.atx.type == "gpio" else []),
]:
if pin >= 0:
logger.info("Writing 0 to GPIO pin=%d (%s)", pin, name)
try:
gpio.set_output(pin, False)
except Exception:
logger.exception("Can't clear GPIO pin=%d (%s)", pin, name)
def _kill_streamer(config: Section) -> None:
logger = get_logger(0)
@ -99,17 +79,12 @@ def main(argv: Optional[List[str]]=None) -> None:
prog="kvmd-cleanup",
description="Kill KVMD and clear resources",
argv=argv,
load_hid=True,
load_atx=True,
load_msd=True,
load_gpio=True,
)[2].kvmd
logger = get_logger(0)
logger.info("Cleaning up ...")
for method in [
_clear_gpio,
_kill_streamer,
_remove_sockets,
]:

81
kvmd/plugins/atx/gpio.py
View File

@ -24,11 +24,14 @@ import asyncio
from typing import Dict
from typing import AsyncGenerator
from typing import Optional
import gpiod
from ...logging import get_logger
from ... import aiotools
from ... import gpio
from ... import aiogp
from ...yamlconf import Option
@ -37,7 +40,6 @@ from ...validators.basic import valid_float_f01
from ...validators.hw import valid_gpio_pin
from . import AtxIsBusyError
from . import BaseAtx
@ -46,7 +48,6 @@ from . import BaseAtx
class Plugin(BaseAtx): # pylint: disable=too-many-instance-attributes
def __init__( # pylint: disable=too-many-arguments,super-init-not-called
self,
power_led_pin: int,
hdd_led_pin: int,
power_led_inverted: bool,
@ -56,17 +57,12 @@ class Plugin(BaseAtx): # pylint: disable=too-many-instance-attributes
reset_switch_pin: int,
click_delay: float,
long_click_delay: float,
state_poll: float,
) -> None:
self.__power_led_pin = gpio.set_input(power_led_pin)
self.__hdd_led_pin = gpio.set_input(hdd_led_pin)
self.__power_switch_pin = gpio.set_output(power_switch_pin, False)
self.__reset_switch_pin = gpio.set_output(reset_switch_pin, False)
self.__power_led_inverted = power_led_inverted
self.__hdd_led_inverted = hdd_led_inverted
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
@ -74,9 +70,15 @@ class Plugin(BaseAtx): # pylint: disable=too-many-instance-attributes
self.__notifier = aiotools.AioNotifier()
self.__region = aiotools.AioExclusiveRegion(AtxIsBusyError, self.__notifier)
self.__reader = gpio.BatchReader(
pins=set([self.__power_led_pin, self.__hdd_led_pin]),
interval=state_poll,
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.AioPinsReader(
path="/dev/gpiochip0",
consumer="kvmd/atx-gpio/leds",
pins=[power_led_pin, hdd_led_pin],
inverted=[power_led_inverted, hdd_led_inverted],
notifier=self.__notifier,
)
@ -92,17 +94,28 @@ class Plugin(BaseAtx): # pylint: disable=too-many-instance-attributes
"reset_switch_pin": Option(-1, type=valid_gpio_pin),
"click_delay": Option(0.1, type=valid_float_f01),
"long_click_delay": Option(5.5, type=valid_float_f01),
"state_poll": Option(0.1, 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("/dev/gpiochip0")
self.__power_switch_line = self.__chip.get_line(self.__power_switch_pin)
self.__power_switch_line.request("kvmd/atx-gpio/power_switch", gpiod.LINE_REQ_DIR_OUT, default_val=0)
self.__reset_switch_line = self.__chip.get_line(self.__reset_switch_pin)
self.__reset_switch_line.request("kvmd/atx-gpio/reset_switch", gpiod.LINE_REQ_DIR_OUT, default_val=0)
async def get_state(self) -> Dict:
return {
"enabled": True,
"busy": self.__region.is_busy(),
"leds": {
"power": (self.__reader.get(self.__power_led_pin) ^ self.__power_led_inverted),
"hdd": (self.__reader.get(self.__hdd_led_pin) ^ self.__hdd_led_inverted),
"power": self.__reader.get(self.__power_led_pin),
"hdd": self.__reader.get(self.__hdd_led_pin),
},
}
@ -119,14 +132,8 @@ class Plugin(BaseAtx): # pylint: disable=too-many-instance-attributes
await self.__reader.poll()
async def cleanup(self) -> None:
for (name, pin) in [
("power", self.__power_switch_pin),
("reset", self.__reset_switch_pin),
]:
try:
gpio.write(pin, False)
except Exception:
get_logger(0).exception("Can't cleanup %s pin %d", name, pin)
if self.__chip:
self.__chip.close()
# =====
@ -149,13 +156,13 @@ class Plugin(BaseAtx): # pylint: disable=too-many-instance-attributes
# =====
async def click_power(self, wait: bool) -> None:
await self.__click("power", self.__power_switch_pin, self.__click_delay, wait)
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_pin, self.__long_click_delay, wait)
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_pin, self.__click_delay, wait)
await self.__click("reset", self.__reset_switch_line, self.__click_delay, wait)
# =====
@ -163,22 +170,22 @@ class Plugin(BaseAtx): # pylint: disable=too-many-instance-attributes
return (await self.get_state())["leds"]["power"]
@aiotools.atomic
async def __click(self, name: str, pin: int, delay: float, wait: bool) -> None:
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, pin, delay)
await self.__inner_click(name, line, delay)
else:
await aiotools.run_region_task(
"Can't perform ATX click or operation was not completed",
self.__region, self.__inner_click, name, pin, delay,
f"Can't perform ATX {name} click or operation was not completed",
self.__region, self.__inner_click, name, line, delay,
)
@aiotools.atomic
async def __inner_click(self, name: str, pin: int, delay: float) -> None:
async def __inner_click(self, name: str, line: gpiod.Line, delay: float) -> None:
try:
gpio.write(pin, True)
line.set_value(1)
await asyncio.sleep(delay)
finally:
gpio.write(pin, False)
line.set_value(0)
await asyncio.sleep(1)
get_logger(0).info("Clicked ATX button %r", name)