Hi Simon, On Thu, Nov 17, 2022 at 8:20 AM Simon Vogl <simon@xxxxxxxx> wrote: > > Dear all, > > we are communicating with a headset-ish device that offers classic > bluetooth services and BLE characteristics in parallel. > > We have code to talk to the Bluetooth classic part via bluetoothd/dbus, > and we have code for talking to the BLE parts based on the C-library / > gatt-client code ; both run in parallel for some time but not > super-stable, so I'd like to move the code over to a dbus version. > > As the device starts advertising BLE characteristics only after a > classic connection has been established, it appears as a Bluetooth > classic device on the system bus, and I did not find a way to start GATT > discovery via the 'official' dbus-API. > > I don't fear to tweak bluetoothd nor ~ctl, but would like to know if > someone already some development going in that direction? Perhaps what is needed is to connect ATT over BREDR that way you don't need 2 bearers to be connected, bt_att already supports connecting over classic but we never took the step to connect ATT once we figured it supported the ATT PSM given is not very common to have a classic profile that uses GATT attributes. > Simon > > -- > > VoXel Interaction Design |www.voxel.at > DI Dr.techn. Simon Vogl |simon@xxxxxxxx > Tomaschekweg 46 | +43 650 2323 555 > A-4040 Linz - Austria | > Office address: Industriezeile 35, 4020 Linz (2nd floor) > -- Luiz Augusto von Dentz
