mirror of https://github.com/home-assistant/core
59 lines
1.9 KiB
Python
59 lines
1.9 KiB
Python
"""A sensor platform which detects underruns and capped status from the official Raspberry Pi Kernel.
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Minimal Kernel needed is 4.14+
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"""
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import logging
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from rpi_bad_power import UnderVoltage, new_under_voltage
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from homeassistant.components.binary_sensor import (
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BinarySensorDeviceClass,
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BinarySensorEntity,
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)
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from homeassistant.config_entries import ConfigEntry
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from homeassistant.core import HomeAssistant
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from homeassistant.helpers.entity import EntityCategory
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from homeassistant.helpers.entity_platform import AddEntitiesCallback
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_LOGGER = logging.getLogger(__name__)
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DESCRIPTION_NORMALIZED = "Voltage normalized. Everything is working as intended."
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DESCRIPTION_UNDER_VOLTAGE = (
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"Under-voltage was detected. Consider getting a uninterruptible power supply for"
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" your Raspberry Pi."
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)
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async def async_setup_entry(
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hass: HomeAssistant,
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config_entry: ConfigEntry,
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async_add_entities: AddEntitiesCallback,
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) -> None:
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"""Set up rpi_power binary sensor."""
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under_voltage = await hass.async_add_executor_job(new_under_voltage)
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async_add_entities([RaspberryChargerBinarySensor(under_voltage)], True)
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class RaspberryChargerBinarySensor(BinarySensorEntity):
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"""Binary sensor representing the rpi power status."""
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_attr_device_class = BinarySensorDeviceClass.PROBLEM
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_attr_entity_category = EntityCategory.DIAGNOSTIC
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_attr_icon = "mdi:raspberry-pi"
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_attr_name = "RPi Power status"
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_attr_unique_id = "rpi_power" # only one sensor possible
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def __init__(self, under_voltage: UnderVoltage) -> None:
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"""Initialize the binary sensor."""
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self._under_voltage = under_voltage
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def update(self) -> None:
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"""Update the state."""
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value = self._under_voltage.get()
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if self._attr_is_on != value:
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if value:
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_LOGGER.warning(DESCRIPTION_UNDER_VOLTAGE)
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else:
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_LOGGER.info(DESCRIPTION_NORMALIZED)
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self._attr_is_on = value
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