Hi John, On Tue, Jul 12, 2022 at 11:56 AM John Klug <John.Klug@xxxxxxxxxxxxx> wrote: > > >You will probably need to wait for the daemon to resolve the services > >which will then export the attributes as D-Bus objects that can be > > >accessed by bluetoothctl, > > How long would one have to wait? The following was typed manually from the command line: > > >> # bluetoothctl gatt.select-attribute f000aa22-0451-4000-b000-000000000000 > > >> # bluetoothctl gatt.acquire-write > > >> No attribute selected > > >> # bluetoothctl gatt.write 0x01 > > >> No attribute selected > > I had no idea whether the above is the correct syntax or not. I merely guessed, since the procedure does not appear to be documented. I think the problem is that you are issuing the select-attribute and then exiting, instead you will need to enter all the commands at the same time otherwise the next time you call bluetoothctl it doesn't have any attribute selected. > > > > > > John Klug > > > > -- Luiz Augusto von Dentz