Ubuntu Manpage: org.bluez.Adapter - BlueZ D-Bus Adapter API documentation

NAME

       org.bluez.Adapter - BlueZ D-Bus Adapter API documentation

INTERFACE

Service
org.bluez

Interface
org.bluez.Adapter1

Object path
[variable prefix]/{hci0,hci1,...}

Methods
void StartDiscovery()
Starts device discovery session which may include starting an inquiry and/or scanning procedures and
remote device name resolving.

Use StopDiscovery to release the sessions acquired.

This process will start creating Device objects as new devices are discovered.

During discovery RSSI delta-threshold is imposed.

Each client can request a single device discovery session per adapter.

Possible errors:

org.bluez.Error.NotReady

org.bluez.Error.Failed

org.bluez.Error.InProgress

void StopDiscovery()
Stops device discovery session started by StartDiscovery.

Note that a discovery procedure is shared between all discovery sessions thus calling StopDiscovery
will only release a single session and discovery will stop when all sessions from all clients have
finished.

Possible errors:

org.bluez.Error.NotReady

org.bluez.Error.Failed

org.bluez.Error.NotAuthorized

void RemoveDevice(object device)
Removes the remote device object at the given path including cahed information such as bonding
information.

Possible errors:

org.bluez.Error.InvalidArguments

org.bluez.Error.Failed

void SetDiscoveryFilter(dict filter)
Sets the device discovery filter for the caller. When this method is called with no filter parameter,
filter is removed.

Possible filter values:

array{string} UUIDs
Filter by service UUIDs, empty means match any UUID.

When a remote device is found that advertises any UUID from UUIDs, it will be reported if:

• Pathloss and RSSI are both empty.

• only Pathloss param is set, device advertise TX power, and computed pathloss is less than
Pathloss param.

• only RSSI param is set, and received RSSI is higher than RSSI param.

int16 RSSI
RSSI threshold value.

PropertiesChanged signals will be emitted for already existing Device objects, with updated
RSSI value. If one or more discovery filters have been set, the RSSI delta-threshold, that is
imposed by StartDiscovery by default, will not be applied.

uint16 Pathloss
Pathloss threshold value.

PropertiesChanged signals will be emitted for already existing Device objects, with updated
Pathloss value.

string Transport (Default "auto")
Transport parameter determines the type of scan.

Possible values:

"auto" Interleaved scan, use LE, BREDR, or both, depending on what's currently enabled.

"bredr"
BR/EDR inquiry only.

"le" LE scan only.

bool DuplicateData (Default false)
Disables duplicate detection of advertisement data.

When enabled PropertiesChanged signals will be generated for either ManufacturerData and
ServiceData everytime they are discovered.

bool Discoverable (Default false)
Make adapter discoverable while discovering, if the adapter is already discoverable setting
this filter won't do anything.

string Pattern (Default none)
Discover devices where the pattern matches either the prefix of the address or device name
which is convenient way to limited the number of device objects created during a discovery.

When set disregards device discoverable flags.

Note: The pattern matching is ignored if there are other client that don't set any pattern as
it work as a logical OR, also setting empty string "" pattern will match any device found.

bool AutoConnect (Default false)
Connect to discovered devices automatically if a Pattern has been set and it matches the device
address or name and it is connectable.

When discovery filter is set, Device objects will be created as new devices with matching criteria are
discovered regardless of they are connectable or discoverable which enables listening to
non-connectable and non-discoverable devices.

When multiple clients call SetDiscoveryFilter, their filters are internally merged, and notifications
about new devices are sent to all clients. Therefore, each client must check that device updates
actually match its filter.

When SetDiscoveryFilter is called multiple times by the same client, last filter passed will be active
for given client.

SetDiscoveryFilter can be called before StartDiscovery. It is useful when client will create first
discovery session, to ensure that proper scan will be started right after call to StartDiscovery.

Possible errors:

org.bluez.Error.NotReady

org.bluez.Error.NotSupported

org.bluez.Error.Failed

array{string} GetDiscoveryFilters()
Returns available filters that can be given to SetDiscoveryFilter.

Possible errors: None

object ConnectDevice(dict properties) [experimental]
connects to device without need of performing General Discovery. Connection mechanism is similar to
Connect method on org.bluez.Device1(5) interface with exception that this method returns success when
physical connection is established and you can specify bearer to connect with parameter. After this
method returns, services discovery will continue and any supported profile will be connected. There is
no need for calling Connect on Device1 after this call. If connection was successful this method
returns object path to created device object or device that already exist.

Possible properties values:

string Address (Mandatory)
The Bluetooth device address of the remote device.

string AddressType (Default "BR/EDR")
The Bluetooth device Address Type. This is address type that should be used for initial
connection.

Possible values:

"public"
Public address

"random"
Random address

Possible errors:

org.bluez.Error.InvalidArguments

org.bluez.Error.AlreadyExists

org.bluez.Error.NotSupported

org.bluez.Error.NotReady

org.bluez.Error.Failed

Properties
string Address [readonly]
The Bluetooth device address.

string AddressType [readonly]
The Bluetooth Address Type. For dual-mode and BR/EDR only adapter this defaults to "public". Single
mode LE adapters may have either value. With privacy enabled this contains type of Identity Address
and not type of address used for connection.

Possible values:

"public"
Public address.

"random
Random address.

string Name [readonly]
The Bluetooth system name (pretty hostname).

This property is either a static system default or controlled by an external daemon providing access
to the pretty hostname configuration.

string Alias [readwrite]
The Bluetooth friendly name. This value can be changed.

In case no alias is set, it will return the system provided name. Setting an empty string as alias
will convert it back to the system provided name.

When resetting the alias with an empty string, the property will default back to system name.

On a well configured system, this property never needs to be changed since it defaults to the system
name and provides the pretty hostname. Only if the local name needs to be different from the pretty
hostname, this property should be used as last resort.

uint32 Class [readonly]
The Bluetooth class of device.

This property represents the value that is either automatically configured by DMI/ACPI information or
provided as static configuration.

boolean Connectable [readwrite]
Set an adapter to connectable or non-connectable. This is a global setting and should only be used by
the settings application.

Setting this property to false will set the Discoverable property of the adapter to false as well,
which will not be reverted if if Connectable is set back to true. If required, the application will
need to manually set Discoverable to true.

Note that this property only affects incoming connections.

boolean Powered [readwrite]
Switch an adapter on or off. This will also set the appropriate connectable state of the controller.

The value of this property is not persistent. After restart or unplugging of the adapter it will reset
back to false.

string PowerState [readonly, experimental]
The power state of an adapter.

The power state will show whether the adapter is turning off, or turning on, as well as being on or
off.

Possible values:

"on" Powered on.

"off" Powered off

"off-enabling"
Transitioning from "off" to "on".

"on-disabling"
Transitioning from "on" to "off".

"off-blocked"
Blocked by rfkill.

boolean Discoverable [readwrite] (Default: false)
Switch an adapter to discoverable or non-discoverable to either make it visible or hide it. This is a
global setting and should only be used by the settings application.

If the DiscoverableTimeout is set to a non-zero value then the system will set this value back to
false after the timer expired.

In case the adapter is switched off, setting this value will fail.

When changing the Powered property the new state of this property will be updated via a
PropertiesChanged signal.

boolean Pairable [readwrite] (Default: true)
Switch an adapter to pairable or non-pairable. This is a global setting and should only be used by the
settings application.

Note that this property only affects incoming pairing requests.

uint32 PairableTimeout [readwrite] (Default: 0)
The pairable timeout in seconds. A value of zero means that the timeout is disabled and it will stay
in pairable mode forever.

uint32 DiscoverableTimeout [readwrite] (Default: 180)
The discoverable timeout in seconds. A value of zero means that the timeout is disabled and it will
stay in discoverable/limited mode forever.

boolean Discovering [readonly]
Indicates that a device discovery procedure is active.

array{string} UUIDs [readonly]
List of 128-bit UUIDs that represents the available local services.

string Modalias [readonly, optional]
Local Device ID information in modalias format used by the kernel and udev.

array{string} Roles [readonly]
List of supported roles.

Possible values:

"central"
Supports the central role.

"peripheral"
Supports the peripheral role.

"central-peripheral"
Supports both roles concurrently.

array{string} ExperimentalFeatures [readonly, optional]
List of 128-bit UUIDs that represents the experimental features currently enabled.

uint16 Manufacturer [readonly]
The manufacturer of the device, as a uint16 company identifier defined by the Core Bluetooth
Specification.

byte Version [readonly]
The Bluetooth version supported by the device, as a core version code defined by the Core Bluetooth
Specification.

BlueZ October 2023 ORG.BLUEZ.ADAPTER(5)