BluezDbus Characteristic

References for this implementation of a Bluez Characteristic using dbus-next

GATT Characteristic: https://gitlab.com/allthenticate/dependencies/bluez/-/blob/master/doc/gatt-api.txt BLE Core Specification: https://www.bluetooth.com/specifications/specs/core-specification/

class able.bluezdbus.characteristic.BlueZCharacteristicFlags(value, names=<not given>, *values, module=None, qualname=None, type=None, start=1, boundary=None)

Bases: enum.Enum

Enum for possible characteristic flags and permissions

AUTHENTICATED_SIGNED_WRITES = 'authenticated_signed_writes'

AUTHORIZE = 'authorize'

BROADCAST = 'broadcast'

ENCRYPT_AUTHENTICATED_READ = 'encrypt_authenticated_read'

ENCRYPT_AUTHENTICATED_WRITE = 'encrypt_authenticated_write'

ENCRYPT_READ = 'encrypt_read'

ENCRYPT_WRITE = 'encrypt_write'

EXTENDED_PROPERTIES = 'extended_properties'

INDICATE = 'indicate'

NOTIFY = 'notify'

READ = 'read'

RELIABLE_WRITE = 'reliable_write'

SECURE_READ = 'secure_read'

SECURE_WRITE = 'secure_write'

WRITABLE_AUXILIARIES = 'writable_auxiliaries'

WRITE = 'write'

WRITE_WITHOUT_RESPONSE = 'write_without_response'

class able.bluezdbus.characteristic.BluezCharacteristic(characteristic_uuid, *, value=b'', flags=None, nickname=None, notify_on_write=False)

Bases: able.characteristic.ABleCharacteristic, dbus_next.service.ServiceInterface

Class implementation of a BlE GATT Characteristic using Dbus-Next

async broadcast(data)

Broadcast characteristic’s new value to every subscribed central

Parameters

data (Union[bytes, str]) – the data to notify the centrals on

Return type

None

async notify_central_of_change(central, data, *args)

Makes a bluez call to notify only one central of a change to this characteristic.

Parameters

• central (ABleCentral) – the central to notify or indicate to with the new data

• data (bytes) – the data to ‘send’ to the central by setting the value of this characteristic to and notifying only that central

Return type

None

Returns

None

property path: str

Path property, raises an exception if not properly defined

Return type

str