Linux cli command org.bluez.GattManager

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NAME 🖥️ org.bluez.GattManager 🖥️

BlueZ D-Bus GattManager API documentation

DESCRIPTION

GATT Manager allows external applications to register GATT services and profiles.

Registering a profile allows applications to subscribe to remote/client services.

Registering a service allows applications to publish a local/server GATT service, which then becomes available to remote devices. A GATT service is represented by a D-Bus object hierarchy where the root node corresponds to a service and the child nodes represent characteristics and descriptors that belong to that service. Each node must implement one of org.bluez.GattService(5), org.bluez.GattCharacteristic(5) or org.bluez.GattDescriptor(5) interfaces, based on the attribute it represents. Each node must also implement the standard D-Bus Properties interface to expose their properties. These objects collectively represent a GATT service definition.

To make service registration simple, bluetoothd(8) requires that all objects that belong to a GATT service be grouped under a D-Bus Object Manager that solely manages the objects of that service. Hence, the standard DBus.ObjectManager interface must be available on the root service path. An example application hierarchy containing two separate GATT services may look like this:

-> /com/example | - org.freedesktop.DBus.ObjectManager | -> /com/example/service0 | | - org.freedesktop.DBus.Properties | | - org.bluez.GattService1 | | | -> /com/example/service0/char0 | | - org.freedesktop.DBus.Properties | | - org.bluez.GattCharacteristic1 | | | -> /com/example/service0/char1 | | - org.freedesktop.DBus.Properties | | - org.bluez.GattCharacteristic1 | | | -> /com/example/service0/char1/desc0 | - org.freedesktop.DBus.Properties | - org.bluez.GattDescriptor1 | -> /com/example/service1 | - org.freedesktop.DBus.Properties | - org.bluez.GattService1 | -> /com/example/service1/char0 - org.freedesktop.DBus.Properties - org.bluez.GattCharacteristic1

When a service is registered, bluetoothd(8) will automatically obtain information about all objects using the service’s Object Manager. Once a service has been registered, the objects of a service should not be removed. If bluetoothd(8) receives an InterfacesRemoved signal from a service’s Object Manager, it will immediately unregister the service. Similarly, if the application disconnects from the bus, all of its registered services will be automatically unregistered. InterfacesAdded signals will be ignored.

INTERFACE

Service
org.bluez

Interface
org.bluez.GattManager1

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

Methods

void RegisterApplication(object application, dict options)

Registers a local GATT services hierarchy as described above (GATT Server) and/or GATT profiles (GATT Client).

The application object path together with the D-Bus system bus connection ID define the identification of the application registering a GATT based service (org.bluez.GattService(5)) and/or profile (org.bluez.GattProfile(5)).

Possible errors:

org.bluez.Error.InvalidArguments
org.bluez.Error.AlreadyExists

void UnregisterApplication(object application)

This unregisters the services and/or profiles that has been previously registered using RegisterApplication(). 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

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