HCI support for external Bluetooth Classic chipset

[Glen M]

Hi,

We are considering hooking up an external chip with a Bluetooth standard HCI interface to do Bluetooth classic using Hands Free protocol and Serial Profile protocol.

I know the nRF5340 uses HCI with the HCI_RPMSG project - Since you already have some kind of HCI support - is what we want to do easy, or is there a big difference between how that's used to communicate BT 5 / low energy stuff VS the old school Classic stuff?

Apologies if my question isn't worded well, I'm pretty new to HCI.

Thanks!

Glen

[beesausage]

Since you currently have some kind of HCI support, I was wondering whether what we want to accomplish would be simple, or if there would be significant differences in how it is utilized to communicate BT 5 / low energy things vs the old school Classic stuff.

drift hunters

[Sigurd]

Hi,

From the Zephyr documentation, the Zephyr Host focus has been on Bluetooth Low Energy (BLE), and only supports portions of a Classical Bluetooth (BR/EDR) Host layer.

https://docs.zephyrproject.org/latest/connectivity/bluetooth/index.html

https://docs.zephyrproject.org/latest/connectivity/bluetooth/overview.html ,

• Basic Bluetooth BR/EDR (Classic) support

  • Generic Access Profile (GAP)

  • Logical Link Control and Adaptation Protocol (L2CAP)

  • Serial Port emulation (RFCOMM protocol)

  • Service Discovery Protocol (SDP)

So it seems to be missing support for e.g. Hands Free protocol that you need.

[tuancho]

[deleted]

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