Failed to configure GNSS

[flau]

Hello,

I have a custom board with an nRF9160 and is running mfw_nrf9160_1.3.5.  The design is ready for production so I thought I will build 10 boards first as a pilot run.  Out of the 10 boards, one is giving me the following error.

W: nrf_modem_gnss_agps_expiry_get() failed, err -13
E: Failed to configure GNSS
I: Location retrieval failed using 'GNSS', trying with 'Cellular' next
%NCELLMEAS: 0,"08452E01","302610","D6DD",80,2325,135,40,15,606912,2325,481,34,2,0,900,310,44,16,24,5255,482,51,18,32

All 9 others work fine.  I tried re-flashing the board a few times, but no luck.  This same error keeps happening.  Does anyone have an idea what is wrong?

Thank you.

[dejans]

Hi,

flau said:

What I found out last night was that the 2 failed boards have %xsystemmode=1,0,0,0, whereas all good working boards have %xsystemmode=1,1,1,0.

flau said:

My question is why is this happening when all boards are running the same code and same modem firmware?  Do I have to set xsystemmode=1,1,1,0 manually at the beginning of the code? 

Looking at %XSYSTEMMODE set command, it might be that the operator has overridden values which are configured. %xsystemmode command is allowed only before activating the modem using the +CFUN=1 command. If the mode needs to be changed, ensure that modem has entered minimum functionality mode +CFUN=0 or flight mode CFUN=4 before doing the change.

Best regards,
Dejan

[flau]

Thanks Dejan.  I think you can close this ticket at this point.  Although it is weird, I will put in a line in the code to check the mode.  If it is not set correctly, then I will issue the xsystemmode command.