On Mon, 27 Nov 2023 08:03:24 -0600 Adam Ford <aford173@xxxxxxxxx> wrote: > On Sun, Nov 26, 2023 at 1:47 PM Andreas Kemnade <andreas@xxxxxxxxxxxx> wrote: > > > > Some of these chips have GNSS support. In some vendor kernels > > a driver on top of misc/ti-st can be found providing a /dev/tigps > > device which speaks the secretive Air Independent Interface (AI2) protocol. > > Implement something comparable as a GNSS interface. > > > > With some userspace tools a proof-of-concept can be shown. A position > > can be successfully read out. Basic properties of the protocol are > > understood. > > > > This was tested on the Epson Moverio BT-200. > > Can you tell me which WiLink chip this uses? > > I'd like to try it on the WL1283, but I want to understand which > WiLink chips you're targeting. > I think, it is a WL1283 here, too. If you want to play around with it now: - set the devicetree node name to bluetooth-gnss - for testing you can use the read-gps program at https://github.com/akemnade/bt200tools Regards, Andreas
