On Mon., Feb. 3, 2020, 6:57 a.m. Arnaud Mouiche, <arnaud.mouiche@...> wrote:

Questions:
- Is there already somebody working on the subject ?

I'm working on the split-LL BLE stack [1] implementation currently, but that is for the "Single Chip" configuration.

From what you describe, it sounds as though you would like to use the SoC as a BLE coprocessor, either over UART or SPI or something. Is that correct? In that case there may be a way to add a vendor-specific HCI command [2] or simply call the command from within your application.

[1] https://docs.zephyrproject.org/latest/guides/bluetooth/bluetooth-arch.html

[2] https://github.com/zephyrproject-rtos/zephyr/blob/master/doc/reference/bluetooth/hci.txt