Hi all,
for those who have the problems with BLE tracking, the component included in Home Assistant has been reported to have some issues.
So I tried to fix the component creating a custom one.
Just create a file bluetooth_le_tracker.py in the custom_components/device_tracker folder and copy the following content into it:
"""
Tracking for bluetooth low energy devices.
"""
import logging
import voluptuous as vol
from homeassistant.helpers.event import track_point_in_utc_time
from homeassistant.components.device_tracker import (
YAML_DEVICES, CONF_TRACK_NEW, CONF_SCAN_INTERVAL, DEFAULT_SCAN_INTERVAL,
PLATFORM_SCHEMA, load_config, SOURCE_TYPE_BLUETOOTH_LE
)
import homeassistant.util.dt as dt_util
import homeassistant.helpers.config_validation as cv
_LOGGER = logging.getLogger(__name__)
REQUIREMENTS = ['pygatt==3.2.0']
BLE_PREFIX = 'BLE_'
MIN_SEEN_NEW = 5
CONF_SCAN_DURATION = 'scan_duration'
CONF_BLUETOOTH_DEVICE = 'device_id'
PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
vol.Optional(CONF_SCAN_DURATION, default=10): cv.positive_int,
vol.Optional(CONF_BLUETOOTH_DEVICE, default='hci0'): cv.string
})
def setup_scanner(hass, config, see, discovery_info=None):
"""Set up the Bluetooth LE Scanner."""
# pylint: disable=import-error
import pygatt
new_devices = {}
def see_device(address, name, new_device=False):
"""Mark a device as seen."""
if new_device:
if address in new_devices:
_LOGGER.debug(
"Seen %s %s times", address, new_devices[address])
new_devices[address] += 1
if new_devices[address] >= MIN_SEEN_NEW:
_LOGGER.debug("Adding %s to tracked devices", address)
devs_to_track.append(address)
else:
return
else:
_LOGGER.debug("Seen %s for the first time", address)
new_devices[address] = 1
return
see(mac=BLE_PREFIX + address, host_name=name.strip("\x00"),
source_type=SOURCE_TYPE_BLUETOOTH_LE)
def discover_ble_devices():
"""Discover Bluetooth LE devices."""
_LOGGER.debug("Discovering Bluetooth LE devices")
try:
adapter = pygatt.GATTToolBackend()
devs = adapter.scan()
devices = {}
for x in devs:
devices[x['address']] = x['name']
_LOGGER.debug("Bluetooth LE devices discovered = %s", devices)
except RuntimeError as error:
_LOGGER.error("Error during Bluetooth LE scan: %s", error)
devices = []
return devices
yaml_path = hass.config.path(YAML_DEVICES)
duration = config.get(CONF_SCAN_DURATION)
ble_dev_id = config.get(CONF_BLUETOOTH_DEVICE)
devs_to_track = []
devs_donot_track = []
# Load all known devices.
# We just need the devices so set consider_home and home range
# to 0
for device in load_config(yaml_path, hass, 0):
# check if device is a valid bluetooth device
if device.mac and device.mac[:4].upper() == BLE_PREFIX:
if device.track:
_LOGGER.debug("Adding %s to BLE tracker", device.mac)
devs_to_track.append(device.mac[4:])
else:
_LOGGER.debug("Adding %s to BLE do not track", device.mac)
devs_donot_track.append(device.mac[4:])
# if track new devices is true discover new devices
# on every scan.
track_new = config.get(CONF_TRACK_NEW)
if not devs_to_track and not track_new:
_LOGGER.warning("No Bluetooth LE devices to track!")
return False
interval = config.get(CONF_SCAN_INTERVAL, DEFAULT_SCAN_INTERVAL)
def update_ble(now):
"""Lookup Bluetooth LE devices and update status."""
devs = discover_ble_devices()
for mac in devs_to_track:
_LOGGER.debug("Checking %s", mac)
result = mac in devs
_LOGGER.debug("Checking %s", result)
if not result:
# Could not lookup device name
continue
if devs[mac] is None:
devs[mac] = mac
see_device(mac, devs[mac])
if track_new:
for address in devs:
if address not in devs_to_track and \
address not in devs_donot_track:
_LOGGER.info("Discovered Bluetooth LE device %s", address)
see_device(address, devs[address], new_device=True)
track_point_in_utc_time(hass, update_ble, dt_util.utcnow() + interval)
update_ble(dt_util.utcnow())
return True
