Wednesday, June 1, 2022

[SOLVED] bluetoothctl: using gatt menu commands in non-interactive mode

Issue

On my Raspberry Pi 4, I would like to use bluetoothctl in non interactive mode but cannot figure out how to access the gatt menu. The command should be something like "bluetoothctl gatt menu list-attributes" but this syntax doesn't work.

For info, in interactive mode one must type "menu gatt" to switch to gatt menu and then commands like "list-attributes" are available.

Thanks in advance !

Eric


Solution

bluetoothctl allows for the commands to be specified using a dot to indicate the hierarchy. e.g gatt.list-attributes

For accessing information with code BlueZ provides APIs using D-Bus bindings.

For example, to get all the information BlueZ has can be done like this:

import pydbus
bus = pydbus.SystemBus()
obj_mngr = bus.get('org.bluez', '/')
mngd_objs = obj_mngr.GetManagedObjects()
for path, obj in mngd_objs.items():
    print(obj)

The API is documented at:

https://git.kernel.org/pub/scm/bluetooth/bluez.git/tree/doc

Examples are available at:

https://git.kernel.org/pub/scm/bluetooth/bluez.git/tree/test



Answered By - ukBaz
Answer Checked By - Gilberto Lyons (WPSolving Admin)
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