135 lines
4.1 KiB
Python
135 lines
4.1 KiB
Python
"""Binary sensor platform integration for Numato USB GPIO expanders."""
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from __future__ import annotations
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from functools import partial
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import logging
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from numato_gpio import NumatoGpioError
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from homeassistant.components.binary_sensor import BinarySensorEntity
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from homeassistant.const import DEVICE_DEFAULT_NAME
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from homeassistant.core import HomeAssistant, callback
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from homeassistant.helpers.dispatcher import async_dispatcher_connect, dispatcher_send
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from homeassistant.helpers.entity_platform import AddEntitiesCallback
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from homeassistant.helpers.typing import ConfigType, DiscoveryInfoType
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from . import (
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CONF_BINARY_SENSORS,
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CONF_DEVICES,
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CONF_ID,
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CONF_INVERT_LOGIC,
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CONF_PORTS,
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DATA_API,
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DOMAIN,
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)
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_LOGGER = logging.getLogger(__name__)
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NUMATO_SIGNAL = "numato_signal_{}_{}"
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def setup_platform(
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hass: HomeAssistant,
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config: ConfigType,
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add_entities: AddEntitiesCallback,
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discovery_info: DiscoveryInfoType | None = None,
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) -> None:
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"""Set up the configured Numato USB GPIO binary sensor ports."""
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if discovery_info is None:
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return
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def read_gpio(device_id, port, level):
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"""Send signal to entity to have it update state."""
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dispatcher_send(hass, NUMATO_SIGNAL.format(device_id, port), level)
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api = hass.data[DOMAIN][DATA_API]
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binary_sensors = []
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devices = hass.data[DOMAIN][CONF_DEVICES]
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for device in [d for d in devices if CONF_BINARY_SENSORS in d]:
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device_id = device[CONF_ID]
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platform = device[CONF_BINARY_SENSORS]
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invert_logic = platform[CONF_INVERT_LOGIC]
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ports = platform[CONF_PORTS]
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for port, port_name in ports.items():
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try:
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api.setup_input(device_id, port)
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api.edge_detect(device_id, port, partial(read_gpio, device_id))
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except NumatoGpioError as err:
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_LOGGER.error(
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(
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"Failed to initialize binary sensor '%s' on Numato device %s"
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" port %s: %s"
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),
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port_name,
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device_id,
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port,
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err,
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)
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continue
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binary_sensors.append(
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NumatoGpioBinarySensor(
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port_name,
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device_id,
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port,
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invert_logic,
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api,
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)
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)
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add_entities(binary_sensors, True)
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class NumatoGpioBinarySensor(BinarySensorEntity):
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"""Represents a binary sensor (input) port of a Numato GPIO expander."""
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_attr_should_poll = False
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def __init__(self, name, device_id, port, invert_logic, api):
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"""Initialize the Numato GPIO based binary sensor object."""
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self._name = name or DEVICE_DEFAULT_NAME
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self._device_id = device_id
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self._port = port
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self._invert_logic = invert_logic
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self._state = None
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self._api = api
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async def async_added_to_hass(self) -> None:
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"""Connect state update callback."""
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self.async_on_remove(
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async_dispatcher_connect(
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self.hass,
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NUMATO_SIGNAL.format(self._device_id, self._port),
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self._async_update_state,
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)
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)
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@callback
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def _async_update_state(self, level):
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"""Update entity state."""
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self._state = level
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self.async_write_ha_state()
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@property
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def name(self):
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"""Return the name of the sensor."""
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return self._name
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@property
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def is_on(self):
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"""Return the state of the entity."""
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return self._state != self._invert_logic
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def update(self) -> None:
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"""Update the GPIO state."""
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try:
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self._state = self._api.read_input(self._device_id, self._port)
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except NumatoGpioError as err:
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self._state = None
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_LOGGER.error(
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"Failed to update Numato device %s port %s: %s",
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self._device_id,
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self._port,
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err,
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)
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