On Sat, Jun 8, 2024 at 2:20 PM Andreas Kemnade <andreas@xxxxxxxxxxxx> wrote: > > Hi Adam, > > On Sat, 8 Jun 2024 14:00:38 -0500 > Adam Ford <aford173@xxxxxxxxx> wrote: > > > On Thu, Jun 6, 2024 at 3:19 PM Andreas Kemnade <andreas@xxxxxxxxxxxx> wrote: > > > > > > Hi Luiz, > > > > > > On Thu, 6 Jun 2024 16:04:10 -0400 > > > Luiz Augusto von Dentz <luiz.dentz@xxxxxxxxx> wrote: > > > > > > > Hi Andreas, > > > > > > > > On Thu, Jun 6, 2024 at 2:30 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. > > > > 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. I think I am stuck. The closed-sourced GPS binary that Logic PD did was done a 3rd party which has since been sold, and Logic PD never had the source code, I just get junk with this driver: $GPGLL,,,,,,V,N*64 $GPRMC,,V,,,,,,,,,,N*53 $GPGGA,,,,,,0,,,,,,,,*66 $GPVTG,,T,,M,,N,,K,N*2C $GPGSA,M,1,,,,,,,,,,,,,,,*12 $GPGSV,1,1,00*79 $GPGLL,,,,,,V,N*64 $GPRMC,,V,,,,,,,,,,N*53 $GPGGA,,,,,,0,,,,,,,,*66 $GPVTG,,T,,M,,N,,K,N*2C $GPGSA,M,1,,,,,,,,,,,,,,,*12 $GPGSV,1,1,00*79 $GPGLL,,,,,,V,N*64 $GPRMC,,V,,,,,,,,,,N*53 $GPGGA,,,,,,0,,,,,,,,*66 $GPVTG,,T,,M,,N,,K,N*2C $GPGSA,M,1,,,,,,,,,,,,,,,*12 $GPGSV,1,1,00*79 I am not 100% positive, but I think the antenna might be required to be powered. I'll talk with the HW engineer who designed the Torpedo + Wireless SOM and see if he remembers anyhthing about the GPS. I know for a fact that Logic PD doesn't have the source code for their GPS demo, and I know it doesn't work with modern kernels, so i can't compare the performance. :-( adam > > Regards, > Andreas
