Does nRF9160 support GPS functions other than $GPGGA information, which is in NMEA format?

[OYAMA YUKIO]

Dear all,

With nrf9160, I start GPS function.

at#xgps = 1,1

If GPS positioning is successful, I will receive #XGPSP and $GPGGA information.
Though I haven't specified the NMEA format type, but I get $GPGGA.

Is it possible for me to receive information based on other NMEA formats?
I want to know date but I can't get it from $GPGGA information.
Can I get $ GPRMC and other information?

My HW is nRF9160DK

Modem FW is v.1.2.3

App is "slm_all_features_DK.hex" come from this thread:

https://devzone.nordicsemi.com/f/nordic-q-a/73906/nrf9160-http-client-at-commands-always-returns-cme-error-0

The app doesn't seem to support GNSS at commands other than #xgps.

The FW version is certified by the operator for LTE connection and cannot be changed.

Getting date and time information from the network through LTE is not my desired answer.

Best regards,

Yukio Oyama

[OYAMA YUKIO]

I forgot to write.

The #XGPSP information has a date, so I think the GPS function has the information needed for other NMEA formats, but the commands to output are hidden or there is no ability to output in other formats.

I want to use the generic NMEA format to get the data.

I hope the dates in the #XGPSP information are not obtained from anything other than GPS.

BR

Yukio Oyama

[JONATHAN LL]

Hi Yukio,

Date/time from the XGPS is from the GPS and not something else. 


You get something like this : $GPGGA,181908.00,3404.7041778,N,07044.3966270,W,4,13,1.00,495.144,M,29.200,M,0.10,0000*40 

181908.00 is the time stamp: UTC time in hours, minutes and seconds


Linkn:https://www.gpsworld.com/what-exactly-is-gps-nmea-data/ 

Regards,
Jonathan

[OYAMA YUKIO]

Hi Jonathan,

Thanks your information.

I know the information contained in $GPGGA. It does not include the date. I want to get date information from $GPRMC. Because it is common to parse the NMEA format. Parsing Nordic  specific #XGPSP commands is less versatile.

I'm not familiar with Software, so I'm only looking at the Apps provided by Nordic download sites. Is it possible to get information in NMEA format in the SDK? (Like GPRMC)

Best Regards,

Yukio Oyama

[JONATHAN LL]

Hi Yukio,

Sorry for the misunderstanding. The #XGPS command only has one does not have the option to be in a different format, so the format is

 #XGPS: <latitude>,<longitude>,<altitude>,<accuracy>,<speed>,<heading>,<datetime>

AT%XSYSTEMMODE=0,0,1,0

OK
AT%XCOEX0=1,1,1565,1586

OK
AT+CFUN=31

OK
at#xgps=1,1

OK

#XGPS: 35.457576,139.625090,121.473785,22.199919,0.442868,0.000000,"2021-06-02 06:25:48"

#XGPS: 35.457550,139.625115,124.293533,15.679427,0.263094,0.000000,"2021-06-02 06:25:49"

#XGPS: 35.457517,139.625094,120.865372,12.768595,0.166673,0.000000,"2021-06-02 06:25:50"

If you where to use the #XPGPS the same format applies:

#XGPS: <latitude>,<longitude>,<altitude>,<accuracy>,<speed>,<heading>,<datetime>

AT%XSYSTEMMODE=1,0,1,0

OK
AT%XCOEX0=1,1,1565,1586

OK
AT+CPSMS=1

OK
AT+CFUN=1

OK
AT#XNRFCLOUD=1

OK
#XNRFCLOUD: 1,0
AT#XPGPS=1,30

OK

#XGPS: 35.457243,139.625435,149.005020,28.184258,10.431827,281.446014,"2021-06-24 04:35:52"

#XGPS: 35.457189,139.625602,176.811203,43.015198,0.601837,281.446014,"2021-06-24 04:36:28"

#XGPS: 35.457498,139.625422,168.243591,31.753956,0.191195,281.446014,"2021-06-24 04:36:41"

#XGPS: 35.457524,139.624667,100.745979,25.324850,6.347160,94.699837,"2021-06-24 04:37:10"

OYAMA YUKIO said:

Is it possible to get information in NMEA format in the SDK? (Like GPRMC)

You will have to modify the code to follow the format you want, it is not a option that is provided from the commands you refer to. 


Regards,
Jonathan

[OYAMA YUKIO]

Hi Jonathan,

I understood that slm-APP does not support NMEA formats other than GPGGA.

My v1.2.3 based slm-APP can only run #XGPS. Any other GPS command will return an error. Is this correct?
From what version can the #XNRFCLOUD and #XPGPS commands be used?

Best regards,

Yukio Oyama

[JONATHAN LL]

What NCS version are you using ?

Versions older then NCS v1.7.0 will not have the same command options, here is the link to NCS1.6.0, https://developer.nordicsemi.com/nRF_Connect_SDK/doc/1.6.0/nrf/applications/serial_lte_modem/doc/GPS_AT_commands.html , only has the #XGPS options. 


Regards,
Jonathan

[OYAMA YUKIO]

Hi Jonathan,

My slm-APP is based on v1.2.3. I understood it was natural.

My question has been resolved.
Thank you for your support.

Best Regards,

Yuki Oyama