90 lines
2.6 KiB
Python
90 lines
2.6 KiB
Python
"""Support for particulate matter sensors connected to a serial port."""
|
|
import logging
|
|
|
|
from pmsensor import serial_pm as pm
|
|
import voluptuous as vol
|
|
|
|
from homeassistant.components.sensor import PLATFORM_SCHEMA, SensorEntity
|
|
from homeassistant.const import CONCENTRATION_MICROGRAMS_PER_CUBIC_METER, CONF_NAME
|
|
import homeassistant.helpers.config_validation as cv
|
|
|
|
_LOGGER = logging.getLogger(__name__)
|
|
|
|
CONF_BRAND = "brand"
|
|
CONF_SERIAL_DEVICE = "serial_device"
|
|
|
|
PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
|
|
{
|
|
vol.Required(CONF_BRAND): cv.string,
|
|
vol.Required(CONF_SERIAL_DEVICE): cv.string,
|
|
vol.Optional(CONF_NAME): cv.string,
|
|
}
|
|
)
|
|
|
|
|
|
def setup_platform(hass, config, add_entities, discovery_info=None):
|
|
"""Set up the available PM sensors."""
|
|
try:
|
|
coll = pm.PMDataCollector(
|
|
config.get(CONF_SERIAL_DEVICE), pm.SUPPORTED_SENSORS[config.get(CONF_BRAND)]
|
|
)
|
|
except KeyError:
|
|
_LOGGER.error(
|
|
"Brand %s not supported\n supported brands: %s",
|
|
config.get(CONF_BRAND),
|
|
pm.SUPPORTED_SENSORS.keys(),
|
|
)
|
|
return
|
|
except OSError as err:
|
|
_LOGGER.error(
|
|
"Could not open serial connection to %s (%s)",
|
|
config.get(CONF_SERIAL_DEVICE),
|
|
err,
|
|
)
|
|
return
|
|
|
|
dev = []
|
|
|
|
for pmname in coll.supported_values():
|
|
if config.get(CONF_NAME) is not None:
|
|
name = f"{config.get(CONF_NAME)} PM{pmname}"
|
|
else:
|
|
name = f"PM{pmname}"
|
|
dev.append(ParticulateMatterSensor(coll, name, pmname))
|
|
|
|
add_entities(dev)
|
|
|
|
|
|
class ParticulateMatterSensor(SensorEntity):
|
|
"""Representation of an Particulate matter sensor."""
|
|
|
|
def __init__(self, pmDataCollector, name, pmname):
|
|
"""Initialize a new PM sensor."""
|
|
self._name = name
|
|
self._pmname = pmname
|
|
self._state = None
|
|
self._collector = pmDataCollector
|
|
|
|
@property
|
|
def name(self):
|
|
"""Return the name of the sensor."""
|
|
return self._name
|
|
|
|
@property
|
|
def state(self):
|
|
"""Return the state of the sensor."""
|
|
return self._state
|
|
|
|
@property
|
|
def unit_of_measurement(self):
|
|
"""Return the unit of measurement of this entity, if any."""
|
|
return CONCENTRATION_MICROGRAMS_PER_CUBIC_METER
|
|
|
|
def update(self):
|
|
"""Read from sensor and update the state."""
|
|
_LOGGER.debug("Reading data from PM sensor")
|
|
try:
|
|
self._state = self._collector.read_data()[self._pmname]
|
|
except KeyError:
|
|
_LOGGER.error("Could not read PM%s value", self._pmname)
|