ESB over HCI

[Abraham Hamidi]

Is it possible to use ESB over the Bluetooth HCI from the controller, or through its own HCI? Preferably using Zephyr? If not, how hard would it be to implement? I am fine with using Gazell as well.

What would also work is a NCP like how Zigbee has. Just exposing the library over serial.

[ketiljo]

No, that's not possible, ESB is a proprietary Nordic "protocol" operating on one frequency only. You need another layer on top of ESB for a proper protocol. Gazell is such a protocol. HCI is a Bluetooth specific interface.