nRF9160 A-GPS SUPL run error

RE: nRF9160 A-GPS SUPL run error

Didrik Rokhaug — Tue, 03 Mar 2020 15:22:20 GMT

There is a new version of the SUPL client available on our websites now. Could you try to see if your problem is fixed with the new version?

RE: nRF9160 A-GPS SUPL run error

Didrik Rokhaug — Tue, 03 Mar 2020 09:33:13 GMT

Were you able to capture a modem trace?

The IPv6 address might just have been due to the way the sample prints the address.

Do you know what SUPL version your SUPL server is using?

RE: nRF9160 A-GPS SUPL run error

Harry Wei — Mon, 02 Mar 2020 02:43:23 GMT

Hi, Didrik:

Thanks for your work.I will test your DEMO.

I am using China Mobile Communications Group Co.,Ltd SIM(CMCC) ,and I need to make sure if my SUPL server support IPv6.

Best regards,

Harry

RE: nRF9160 A-GPS SUPL run error

Didrik Rokhaug — Thu, 27 Feb 2020 15:15:24 GMT

No, it was empty as well.

I have tested taking a modem trace when running the A-GPS sample, and the size of my trace increased with several kilobytes per second.

I have created a modified sample that activates modem tracing automatically. All you have to do is to start capturing a trace, then program the modified sample (it already uses your modified SUPL server).

When testing my modified sample, I got the same error as you did. I have also requested help from the SDK team to identify the problem.

May I ask what SIM card you are using?

Also, I noticed that you give the SUPL server address as an IPv4 address, but it is resolved to an IPv6 address. Does your SUPL server support IPv6?

devzone.nordicsemi.com/.../agps_5F00_trace_5F00_china.zip

RE: nRF9160 A-GPS SUPL run error

Harry Wei — Thu, 27 Feb 2020 10:39:56 GMT

Hi, Didrik:

Could you see find problems only from the log?

Best regards,

Harry

RE: nRF9160 A-GPS SUPL run error

Harry Wei — Tue, 25 Feb 2020 08:44:38 GMT

Hi, Didrik:

I've tried according to your suggestion, but the result is the same.

The DEMO(nrf/samples/nrf9160/gps)starts LTE only for a short time(a few seconds),after that, LTE is closed, so the modem trace size is smaller.

Best regards,

Harry

devzone.nordicsemi.com/.../nRF9160_5F00_DK_5F00_A_2D00_GPS_5F00_1.zip

RE: nRF9160 A-GPS SUPL run error

Didrik Rokhaug — Fri, 21 Feb 2020 14:49:27 GMT

There seems to be something wrong with your modem trace.

It should be much bigger (the size grows to several hundreds of kilobytes quite quickly).

Could you try again?

RE: nRF9160 A-GPS SUPL run error

Harry Wei — Fri, 21 Feb 2020 02:57:55 GMT

devzone.nordicsemi.com/.../nRF9160_5F00_DK_5F00_A_2D00_GPS.zip

Hi, Didrik:

modem version v1.1.1

nRF9160 DK version 0.8.5

See attachment for trace file(I captured 3 times)

Best regards,

Harry

RE: nRF9160 A-GPS SUPL run error

Didrik Rokhaug — Thu, 20 Feb 2020 16:54:51 GMT

Hi.

Could you take a modem trace of when the error occurs?

If you do not know how to take a modem trace, you can follow this guide: https://devzone.nordicsemi.com/nordic/nordic-blog/b/blog/posts/how-to-get-modem-trace-using-trace-collector-in-nrf-connect

Best regards,

Didrik