Linux cli command org.bluez.GattDescriptor

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NAME 🖥️ org.bluez.GattDescriptor 🖥️

BlueZ D-Bus GattDescriptor API documentation

DESCRIPTION

GATT local/server and remote/client descriptor attribute representation share the same high-level D-Bus API.

Local/Server refers to GATT based descriptors exported by a plugin or an external application.

Remote/Client refers to GATT descriptors exported by the peer.

INTERFACE

Client

Service
org.bluez

Interface
org.bluez.GattDescriptor1

Object path
[variable prefix]/{hci0,hci1,…}/dev_XX_XX_XX_XX_XX_XX/serviceXX/charYYYY/descriptorZZZ

Server

Service
unique name

Interface
org.bluez.GattDescriptor1

Object path
freely definable

Methods

array{byte} ReadValue(dict flags)

Issues a request to read the value of the descriptor and returns the value if the operation was successful.

Possible options:

uint16_t offset
Read start offset in bytes.

object device (server only)
Device object.

string link
Link type (Server only).

Possible values:

“BR/EDR”
“LE”

Possible Errors:

org.bluez.Error.Failed
org.bluez.Error.InProgress
org.bluez.Error.NotPermitted
org.bluez.Error.NotAuthorized
org.bluez.Error.NotSupported

void WriteValue(array{byte} value, dict flags)

Issues a request to write the value of the descriptor.

Possible flags:

uint16 offset
Write start offset in bytes.

uint16 mtu
Exchanged MTU (Server only).

object device
Device path (Server only).

string link
Link type (Server only).

Possible values:

“BR/EDR”
“LE”

boolean prepare-authorize
True if prepare authorization request.

Possible Errors:

org.bluez.Error.Failed
org.bluez.Error.InProgress
org.bluez.Error.NotPermitted
org.bluez.Error.InvalidValueLength
org.bluez.Error.NotAuthorized
org.bluez.Error.NotSupported

Properties

string UUID [read-only]

128-bit descriptor UUID.

object Characteristic [read-only]

Object path of the GATT characteristic the descriptor belongs to.

array{byte} Value [read-only, optional]

The cached value of the descriptor. This property gets updated only after a successful read request, upon which a PropertiesChanged signal will be emitted.

array{string} Flags [read-only]

Defines how the descriptor value can be used.

Possible values:

“read”
“write”
“encrypt-read”
“encrypt-write”
“encrypt-authenticated-read”
“encrypt-authenticated-write”
“secure-read” (Server Only)
“secure-write” (Server Only)
“authorize”

uint16 Handle [read-only] (Client Only)

Descriptor handle.

uint16 Handle [read-write, optional] (Server Only)

Descriptor handle. When available in the server it would attempt to use to allocate into the database which may fail, to auto allocate the value 0x0000 shall be used which will cause the allocated handle to be set once registered.

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