> I hope that you are following the established NuttX Bluetooth > architecture per > https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=139629397 > or file:///C:/Users/spuda/AppData/Local/Temp/nuttx-4-WifiBt.pdf
I was unaware of that presentation. But yes, I'm following the expected architecture. Anyways, if something needs to be changed later, it is no problem. Currently I have a Link-layer implementation, which does a bt_netdev_register() call. The LL receives HCI commands and speaks to a lower-half LL. This lower-half is expected to be implemented by each architecture. Since I'm on nRF52, this lower-half accesses the RADIO peripheral via the nrf52_radio.c arch interface. The upper-half of the LL should implement everything about the controller part of the BLE stack that is arch-independant. The lower-half does not carry much complexity as it is mostly a wrapper with a standardized interface. If I sort out which timing system I should use to manage scan interval, window, and so on, and when I receive the nrf52832 eval board, I can open a draft PR so you can see the work in progress. Best, Matias
