116 lines
3.4 KiB
Python
116 lines
3.4 KiB
Python
"""Support for 1-Wire entities."""
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import logging
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from typing import Any, Dict, Optional
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from pyownet import protocol
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from homeassistant.helpers.entity import Entity
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from homeassistant.helpers.typing import StateType
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from .const import SENSOR_TYPES
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_LOGGER = logging.getLogger(__name__)
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class OneWire(Entity):
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"""Implementation of a 1-Wire sensor."""
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def __init__(
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self,
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name,
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device_file,
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sensor_type: str,
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sensor_name: str = None,
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device_info=None,
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default_disabled: bool = False,
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):
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"""Initialize the sensor."""
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self._name = f"{name} {sensor_name or sensor_type.capitalize()}"
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self._device_file = device_file
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self._sensor_type = sensor_type
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self._device_class = SENSOR_TYPES[sensor_type][1]
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self._unit_of_measurement = SENSOR_TYPES[sensor_type][0]
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self._device_info = device_info
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self._state = None
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self._value_raw = None
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self._default_disabled = default_disabled
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@property
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def name(self) -> Optional[str]:
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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 state(self) -> StateType:
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"""Return the state of the sensor."""
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return self._state
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@property
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def device_class(self) -> Optional[str]:
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"""Return the class of this device."""
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return self._device_class
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@property
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def unit_of_measurement(self) -> Optional[str]:
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"""Return the unit the value is expressed in."""
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return self._unit_of_measurement
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@property
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def device_state_attributes(self) -> Optional[Dict[str, Any]]:
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"""Return the state attributes of the sensor."""
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return {"device_file": self._device_file, "raw_value": self._value_raw}
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@property
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def unique_id(self) -> Optional[str]:
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"""Return a unique ID."""
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return self._device_file
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@property
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def device_info(self) -> Optional[Dict[str, Any]]:
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"""Return device specific attributes."""
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return self._device_info
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@property
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def entity_registry_enabled_default(self) -> bool:
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"""Return if the entity should be enabled when first added to the entity registry."""
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return not self._default_disabled
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class OneWireProxy(OneWire):
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"""Implementation of a 1-Wire sensor through owserver."""
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def __init__(
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self,
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name: str,
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device_file: str,
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sensor_type: str,
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sensor_name: str,
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device_info: Dict[str, Any],
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disable_startup: bool,
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owproxy: protocol._Proxy,
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):
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"""Initialize the sensor."""
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super().__init__(
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name, device_file, sensor_type, sensor_name, device_info, disable_startup
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)
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self._owproxy = owproxy
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def _read_value_ownet(self):
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"""Read a value from the owserver."""
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return self._owproxy.read(self._device_file).decode().lstrip()
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def update(self):
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"""Get the latest data from the device."""
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value = None
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try:
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self._value_raw = float(self._read_value_ownet())
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except protocol.Error as exc:
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_LOGGER.error("Owserver failure in read(), got: %s", exc)
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else:
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if "count" in self._unit_of_measurement:
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value = int(self._value_raw)
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else:
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value = round(self._value_raw, 1)
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self._state = value
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