gkreitz / homeassistant-airthings Goto Github PK
View Code? Open in Web Editor NEWQuick n' dirty hack to get Airthings Wave Plus sensor into Home Assistant
License: Apache License 2.0
Quick n' dirty hack to get Airthings Wave Plus sensor into Home Assistant
License: Apache License 2.0
Hi,
I think that the sensor actually delivers the values in units of ppb as opposed to ppm?
have modified this as well as a couple of other little icons in sensors.yaml
import logging
import struct
import datetime
from homeassistant.components.sensor import PLATFORM_SCHEMA
import homeassistant.helpers.config_validation as cv
import voluptuous as vol
from homeassistant.helpers.entity import Entity
from homeassistant.util import Throttle
from homeassistant.const import (TEMP_CELSIUS, DEVICE_CLASS_HUMIDITY, DEVICE_CLASS_TEMPERATURE, DEVICE_CLASS_PRESSURE, STATE_UNKNOWN)
_LOGGER = logging.getLogger(__name__)
DOMAIN = 'airthings'
CONF_MAC = 'mac'
PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
vol.Required(CONF_MAC): cv.string,
})
MIN_TIME_BETWEEN_UPDATES = datetime.timedelta(minutes=15)
SENSOR_TYPES = [
['temperature', 'Temperature', TEMP_CELSIUS, None, DEVICE_CLASS_TEMPERATURE],
['co2', 'CO2', 'ppm', 'mdi:periodic-table-co2', None],
['pressure', 'Pressure', 'mbar', 'mdi:gauge', DEVICE_CLASS_PRESSURE],
['humidity', 'Humidity', '%', 'mdi:water-percent', DEVICE_CLASS_HUMIDITY],
['voc', 'VOC', 'ppb', 'mdi:biohazard', None],
['short_radon', 'Short-term Radon', 'Bq/m3', 'mdi:biohazard', None],
['long_radon', 'Long-term Radon', 'Bq/m3', 'mdi:biohazard', None],
]
def setup_platform(hass, config, add_devices, discovery_info=None):
"""Setup the sensor platform."""
_LOGGER.debug("Starting airthings")
reader = AirthingsWavePlusDataReader(config.get(CONF_MAC))
add_devices([ AirthingsSensorEntity(reader, key,name,unit,icon,device_class) for [key, name, unit, icon, device_class] in SENSOR_TYPES])
class AirthingsWavePlusDataReader:
def __init__(self, mac):
self._mac = mac
self._state = { }
def get_data(self, key):
if key in self._state:
return self._state[key]
return STATE_UNKNOWN
@property
def mac(self):
return self._mac
@Throttle(MIN_TIME_BETWEEN_UPDATES)
def update(self):
_LOGGER.debug("Airthings updating data")
import pygatt
from pygatt.backends import Characteristic
adapter = pygatt.backends.GATTToolBackend()
char = 'b42e2a68-ade7-11e4-89d3-123b93f75cba'
try:
# reset_on_start must be false - reset is hardcoded to do sudo, which does not exist in the hass.io Docker container.
adapter.start(reset_on_start=False)
device = adapter.connect(self._mac)
# Unclear why this does not work. Seems broken in the command line tool too. Hopefully handle is stable...
#value = device.char_read(char,timeout=10)
value = device.char_read_handle('0x000d',timeout=10)
(humidity, light, sh_rad, lo_rad, temp, pressure, co2, voc) = struct.unpack('<xbxbHHHHHHxxxx', value)
self._state['humidity'] = humidity / 2.0
self._state['light'] = light * 1.0
self._state['short_radon'] = sh_rad
self._state['long_radon'] = lo_rad
self._state['temperature'] = temp / 100.
self._state['pressure'] = pressure / 50.
self._state['co2'] = co2 * 1.
self._state['voc'] = voc * 1.
finally:
adapter.stop()
class AirthingsSensorEntity(Entity):
"""Representation of a Sensor."""
def __init__(self, reader, key, name, unit, icon, device_class):
"""Initialize the sensor."""
self._reader = reader
self._key = key
self._name = name
self._unit = unit
self._icon = icon
self._device_class = device_class
@property
def name(self):
"""Return the name of the sensor."""
return 'Airthings {}'.format(self._name)
@property
def icon(self):
"""Return the icon of the sensor."""
return self._icon
@property
def device_class(self):
"""Return the icon of the sensor."""
return self._device_class
@property
def state(self):
"""Return the state of the sensor."""
return self._reader.get_data(self._key)
@property
def unit_of_measurement(self):
"""Return the unit of measurement."""
return self._unit
@property
def unique_id(self):
return '{}-{}'.format(self._reader.mac, self._name)
def update(self):
"""Fetch new state data for the sensor.
This is the only method that should fetch new data for Home Assistant.
"""
self._reader.update()
Hi gkreitz
First of all, thanks for a great module for HA and AirThings Wave Plus. Works like a charm.
Is it possible to add support for the HACS repository? Like having a hacs.json?
{
"name": "Airthings Wave Plus",
"domains": ["sensor", "binary_sensor"],
"homeassistant": "0.105",
"render_readme": true
}
Let me hear your thoughts.
Thanks!
Love the plugin d appreciate you may no longer be workin on it.
For some reason, allmradings are fine except humifity which is displayed as a - value.
Are you seeing this?
Thanks,
Helle thank you very much for making this component. I have been using it for a few days and noticed that it stops getting data from the device after about 7 hours. I am running hassos 3.5 home assistant 0.102.3 on a raspberry Pi 3B and this is the same issue that I had with the Xiaomi BLE Temperature/Humidity sensor and the Mi Flora plant sensor for a long time. Cant remember when this started to become a problem for those components but it used to be stable and lots of other people have the same problem. As this was working and suddenly 2 BLE components stopped working I suspect the problem was caused by hassos, Hassio or home assistant but I dont have the skills to find out where the problem is and since lots of people have BLE trouble also with BLE tracker for long time and that it not yet resolved I guess it is complicated. But I have seen that somebody has been able to fix this with a custom component: https://github.com/custom-components/sensor.mitemp_bt. Is there any chance that somebody with the right skills could do a similar fix for this component.
home-assistant/core#24313
Regards
Henning
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