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using libgpiod for the gpio atx

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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
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81
kvmd/plugins/atx/gpio.py
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@@ -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)