[EXS82-W, LgaDevKit, GPS] unable to get GNGGA frame | Thales IoT Developer Community
May 21, 2021 - 4:49pm, 2217 views
I want to get the NMEA frame from the EXS82-W mounted to LgaDevKit,
Here is the configuration of GPS of EXS82-W:
==> When I run GPS (with the command: AT ^ SGPSC = "Engine", "3"), I do not receive the GNGGA frame and I receive two GNGSA frames at the same NMEA frame. Please see the following screenshot for more details.
Any explanation for this behavior: * Existing of two GNGSA data. * And especially not receiving the GNGGA data! In addition, in the received GNRMC frame, the value of the 8th parameter is empty: there is no value! Is that logic?. This value corresponds to the "Course over ground" parameter. Why we don't received 0.0 for example like the 7th parameter (Speed over ground) which is equal to 0.0 and so its not empty in the received GNRMC frame? Thank you in advance for your feedback and for any help. Best regards.
I'm not a GPS expert but I think that no course over ground value may be related to the speed which is 0. Maybe the course wasn't determined because the module is not moving. Maybe it is also related to fix quality - it is 2D fix based on 4 satellites.
The 2 GNGSA sentences show different values - maybe it is the result of the number of satellites in view.
Honestly I don't know why GNGGA is not displayed at all. I'll try to get more information on that.
is there any news about this topic ?
why you think we can't get the GNGGA frame?
thanks in advance.
I asked R&D but hey need to clarify this with the chip provider.
I'm sorry for the delay.
I've got the reply that the module doesn’t support GNGGA sentence.
It looks like it is a documentation error. GNGGA should not be placed in the doc. I'm sorry for this confusion.