Pulling in that SDK upstream is likely not feasible for multiple reasons including the licencing side. That said there already is some support for the BCM43xxx chips which if I recall correctly are the same family, and it may be not too much work to add missing support.
--Brennan On Sat, Jul 9, 2022, 12:54 PM Craig Altenburg <cr...@qrpc.com> wrote: > I am looking into adding support for the Raspberry Pi Pico W which uses > the Infineon’s CYW43439 WiFi chip. > > Rather than trying to write I complete interface to this chip, I was > wondering whether it would be appropriate to build with the code in the > Pico-SDK supplied by the Raspberry Pi foundation. > > The library Pico-SDK uses to communicate with the CYW43439 is Copyright > George Robotics Pty Ltd, and is generally licensed for non-commercial > purposes. It is also licensed for use with the RP2040 (or other Raspberry > Pi Foundation chips) in a manner that permits commercial use. > > Any thoughts on this would be appreciated.