BlueZ D-Bus LE Advertising API Description
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Advertising packets are structured data which is broadcast on the LE Advertising
channels and available for all devices in range. Because of the limited space
available in LE Advertising packets (31 bytes), each packet's contents must be
carefully controlled.
BlueZ acts as a store for the Advertisement Data which is meant to be sent.
It constructs the correct Advertisement Data from the structured
data and configured the kernel to send the correct advertisement.
Advertisement Data objects are registered freely and then referenced by BlueZ
when constructing the data sent to the kernel.
LE Advertisement Data hierarchy
===============================
Specifies the Advertisement Data to be broadcast and some advertising
parameters. Properties which are not present will not be included in the
data. Required advertisement data types will always be included.
All UUIDs are 128-bit versions in the API, and 16 or 32-bit
versions of the same UUID will be used in the advertising data as appropriate.
Service org.bluez
Interface org.bluez.LEAdvertisement1
Object path freely definable
Methods void Release() [noreply]
This method gets called when the service daemon
removes the Advertisement. A client can use it to do
cleanup tasks. There is no need to call
UnregisterAdvertisement because when this method gets
called it has already been unregistered.
Properties string Type
Determines the type of advertising packet requested.
Possible values: "broadcast" or "peripheral"
array{string} ServiceUUIDs
List of UUIDs to include in the "Service UUID" field of
the Advertising Data.
dict ManufacturerData
Manufactuer Data fields to include in
the Advertising Data. Keys are the Manufacturer ID
to associate with the data.
array{string} SolicitUUIDs
Array of UUIDs to include in "Service Solicitation"
Advertisement Data.
dict ServiceData
Service Data elements to include. The keys are the
UUID to associate with the data.
dict Data [Experimental]
Advertising Type to include in the Advertising
Data. Key is the advertising type and value is the
data as byte array.
Note: Types already handled by other properties shall
not be used.
Possible values:
<type> <byte array>
...
Example:
<Transport Discovery> <Organization Flags...>
0x26 0x01 0x01...
bool Discoverable [Experimental]
Advertise as general discoverable. When present this
will override adapter Discoverable property.
Note: This property shall not be set when Type is set
to broadcast.
uint16 DiscoverableTimeout [Experimental]
The discoverable timeout in seconds. A value of zero
means that the timeout is disabled and it will stay in
discoverable/limited mode forever.
Note: This property shall not be set when Type is set
to broadcast.
array{string} Includes
List of features to be included in the advertising
packet.
Possible values: as found on
LEAdvertisingManager.SupportedIncludes
string LocalName
Local name to be used in the advertising report. If the
string is too big to fit into the packet it will be
truncated.
If this property is available 'local-name' cannot be
present in the Includes.
uint16 Appearance
Appearance to be used in the advertising report.
Possible values: as found on GAP Service.
uint16_t Duration
Rotation duration of the advertisement in seconds. If
there are other applications advertising no duration is
set the default is 2 seconds.
uint16_t Timeout
Timeout of the advertisement in seconds. This defines
the lifetime of the advertisement.
string SecondaryChannel [Experimental]
Secondary channel to be used. Primary channel is
always set to "1M" except when "Coded" is set.
Possible value: "1M" (default)
"2M"
"Coded"
uint32 MinInterval [Experimental]
Minimum advertising interval to be used by the
advertising set, in milliseconds. Acceptable values
are in the range [20ms, 10,485s]. If the provided
MinInterval is larger than the provided MaxInterval,
the registration will return failure.
uint32 MaxInterval [Experimental]
Maximum advertising interval to be used by the
advertising set, in milliseconds. Acceptable values
are in the range [20ms, 10,485s]. If the provided
MinInterval is larger than the provided MaxInterval,
the registration will return failure.
int16 TxPower [Experimental]
Requested transmission power of this advertising set.
The provided value is used only if the "CanSetTxPower"
feature is enabled on the Advertising Manager. The
provided value must be in range [-127 to +20], where
units are in dBm.
LE Advertising Manager hierarchy
================================
The Advertising Manager allows external applications to register Advertisement
Data which should be broadcast to devices. Advertisement Data elements must
follow the API for LE Advertisement Data described above.
Service org.bluez
Interface org.bluez.LEAdvertisingManager1
Object path /org/bluez/{hci0,hci1,...}
Methods RegisterAdvertisement(object advertisement, dict options)
Registers an advertisement object to be sent over the LE
Advertising channel. The service must be exported
under interface LEAdvertisement1.
InvalidArguments error indicates that the object has
invalid or conflicting properties.
InvalidLength error indicates that the data
provided generates a data packet which is too long.
The properties of this object are parsed when it is
registered, and any changes are ignored.
If the same object is registered twice it will result in
an AlreadyExists error.
If the maximum number of advertisement instances is
reached it will result in NotPermitted error.
Possible errors: org.bluez.Error.InvalidArguments
org.bluez.Error.AlreadyExists
org.bluez.Error.InvalidLength
org.bluez.Error.NotPermitted
UnregisterAdvertisement(object advertisement)
This unregisters an advertisement that has been
previously registered. The object path parameter must
match the same value that has been used on registration.
Possible errors: org.bluez.Error.InvalidArguments
org.bluez.Error.DoesNotExist
Properties byte ActiveInstances
Number of active advertising instances.
byte SupportedInstances
Number of available advertising instances.
array{string} SupportedIncludes
List of supported system includes.
Possible values: "tx-power"
"appearance"
"local-name"
array{string} SupportedSecondaryChannels [Experimental]
List of supported Secondary channels. Secondary
channels can be used to advertise with the
corresponding PHY.
Possible values: "1M"
"2M"
"Coded"
dict SupportedCapabilities [Experimental]
Enumerates Advertising-related controller capabilities
useful to the client.
Possible Values:
byte MaxAdvLen
Max advertising data length
byte MaxScnRspLen
Max advertising scan response length
int16 MinTxPower
Min advertising tx power (dBm)
int16 MaxTxPower
Max advertising tx power (dBm)
array{string} SupportedFeatures [readonly,optional,Experimental]
List of supported platform features. If no features
are available on the platform, the SupportedFeatures
array will be empty.
Possible values: "CanSetTxPower"
Indicates whether platform can
specify tx power on each
advertising instance.
"HardwareOffload"
Indicates whether multiple
advertising will be offloaded
to the controller.
Generated by dwww version 1.15 on Sat May 18 10:59:44 CEST 2024.