Re: [PATCH v4 0/4] Bluetooth/gnss: GNSS support for TiWi chips

Andreas Kemnade
2024-06-08T19:20:17Z

Hi Adam,

On Sat, 8 Jun 2024 14:00:38 -0500
Adam Ford <aford173@gmail.com> wrote:

> On Thu, Jun 6, 2024 at 3:19 PM Andreas Kemnade <andreas@kemnade.info> wrote:
> >
> > Hi Luiz,
> >
> > On Thu, 6 Jun 2024 16:04:10 -0400
> > Luiz Augusto von Dentz <luiz.dentz@gmail.com> wrote:
> >
> > > Hi Andreas,
> > >
> > > On Thu, Jun 6, 2024 at 2:30 PM Andreas Kemnade <andreas@kemnade.info> 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.
>
> I think you may have sent me a file to test, but I can't find the
> e-mail. Can you tell me what tool you used to test it? I can get
> gnss0 to enumerate, so I am close.
>
hmm, /bin/cat is sufficient. It should spit out nmea now by default.

For playing around with raw mode, you need the ai2raw parameter
and then you can play around with read-gps from
https://github.com/akemnade/bt200tools

> [ 20.759857] hci-ti serial0-0: using DT
> '/ocp@68000000/serial@4806c000/bluetooth-gnss' for 'enable' GPIO
> lookup
> [ 20.770263] of_get_named_gpiod_flags: parsed 'enable-gpios'
> property of node '/ocp@68000000/serial@4806c000/bluetooth-gnss[0]' -
> status (0)
> [ 29.221588] gnss: GNSS driver registered with major 244
>
That is nice.

Regards,
Andreas