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libgpiod 2.x api

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This commit is contained in:
Maxim Devaev
2024-01-14 22:25:09 +02:00
parent e1c6d1a990
commit e28dec4e33
8 changed files with 141 additions and 136 deletions
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36
kvmd/plugins/ugpio/gpio.py
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@@ -54,9 +54,7 @@ class Plugin(BaseUserGpioDriver):
self.__output_pins: dict[int, (bool | None)] = {}
self.__reader: (aiogp.AioReader | None) = None
self.__chip: (gpiod.Chip | None) = None
self.__output_lines: dict[int, gpiod.Line] = {}
self.__outputs_request: (gpiod.LineRequest | None) = None
@classmethod
def get_plugin_options(cls) -> dict:
@@ -76,27 +74,34 @@ class Plugin(BaseUserGpioDriver):
def prepare(self) -> None:
assert self.__reader is None
assert self.__outputs_request is None
self.__reader = aiogp.AioReader(
path=self.__device_path,
consumer="kvmd::gpio::inputs",
pins=self.__input_pins,
notifier=self._notifier,
)
self.__chip = gpiod.Chip(self.__device_path)
for (pin, initial) in self.__output_pins.items():
line = self.__chip.get_line(pin)
line.request("kvmd::gpio::outputs", gpiod.LINE_REQ_DIR_OUT, default_vals=[int(initial or False)])
self.__output_lines[pin] = line
if self.__output_pins:
self.__outputs_request = gpiod.request_lines(
self.__device_path,
consumer="kvmd::gpiod::outputs",
config={
pin: gpiod.LineSettings(
direction=gpiod.line.Direction.OUTPUT,
output_value=gpiod.line.Value(initial or False),
)
for (pin, initial) in self.__output_pins.items()
},
)
async def run(self) -> None:
assert self.__reader
await self.__reader.poll()
async def cleanup(self) -> None:
if self.__chip:
if self.__outputs_request:
try:
self.__chip.close()
self.__outputs_request.release()
except Exception:
pass
@@ -105,10 +110,15 @@ class Plugin(BaseUserGpioDriver):
pin_int = int(pin)
if pin_int in self.__input_pins:
return self.__reader.get(pin_int)
return bool(self.__output_lines[pin_int].get_value())
assert self.__outputs_request
assert pin_int in self.__output_pins
return bool(self.__outputs_request.get_value(pin_int).value)
async def write(self, pin: str, state: bool) -> None:
self.__output_lines[int(pin)].set_value(int(state))
assert self.__outputs_request
pin_int = int(pin)
assert pin_int in self.__output_pins
self.__outputs_request.set_value(pin_int, gpiod.line.Value(state))
def __str__(self) -> str:
return f"GPIO({self._instance_name})"