nRF9160 get device position using AT command

[zazas321]

I am playing around with nRF9160 on the Thingy 91. I am testing various AT command and just familiarizing myself with the LTE and AT commands.

For me, the most important modem funcionality is to be able to detect device position. I have been going through the AT command document trying to figure out how can this be done:

https://infocenter.nordicsemi.com/pdf/nrf9160_at_commands_v2.2.pdf

but I could not find a way to do this.

I have flashed the device with asset tracker v2 application and opened cellular monitor:

I was hoping to see the device position here but I do not think that is the case since I cannot see position parameter anywhere

I have also tried this:

https://electronics.stackexchange.com/questions/73427/trying-to-find-location-in-gsm-network

but it did not seem to work.

Apologies in advance if my questions are silly, I am quite new to this.

My main question

1. Is there a way to get the device location (latitude, longitude) using AT command? 

2. Can you monitor device position in Cellular Monitor?

[zazas321]

You were right regarding the nRF9161. I was looking a the wrong document, thanks for clarifying.

Regarding the serial monitor, I have tried Serial Terminal found at NRF Connect and I can say that it works!

However, I still have some questions.

Question 1

It does not work on Termite. Perhaps the serial port settings are not correct? I am pretty sure I have configured as suggested on your website:

developer.nordicsemi.com/.../slm_description.html

but it still does not work:

If you have termite, could you please try this on your side just to confirm there is an issue on my side?

Question 2

As you can see from the image above, I have tried to use AT#XGPS command but the ERROR has been returned. Perhaps you got any ideas why would that be the case?

I use the following example:

Can you run it on your side just to confirm it works on your side?

[Øyvind]

zazas321 said:

If you have termite, could you please try this on your side just to confirm there is an issue on my side?

I'm afraid I don't have Termite on my machine. If you do get results with the Serial Terminal then the application is working as intended

zazas321 said:

As you can see from the image above, I have tried to use AT#XGPS command but the ERROR has been returned. Perhaps you got any ideas why would that be the case?

I get the same result and will investigate. 

Kind regards,
Øyvind

[Øyvind]

Hello again, 

Øyvind said:

I get the same result and will investigate. 

This is a bug which will be fixed in the next tagged version. Should be availble on the main branch for testing now. 

Kind regards,
Øyvind

[zazas321]

Thank you very much for investigating this further! Are you suggesting that there is an issue with the AT#XGPS command on the ncs v2.5.0 or this issue is specific to the serial_LTE application? 

Being able to get the device location using AT#XGPS at command I would consider to be one of the most important GNSS funcionalities. It is quite strange how no one have noticed it earlier.

Anyways, regarding the termite, I have been further experimenting with it and discovered that you have to set Flow Control in order to get the response:

However, on your website this is not shown:

which is quite misleading.

[Øyvind]

zazas321 said:

Anyways, regarding the termite, I have been further experimenting with it and discovered that you have to set Flow Control in order to get the response:

Thanks for pointing out! I will inform our documentation team about this.

zazas321 said:

Thank you very much for investigating this further! Are you suggesting that there is an issue with the AT#XGPS command on the ncs v2.5.0 or this issue is specific to the serial_LTE application? 

No, sorry, the issue seems to be with the example itself which will be fixed in latest version. The #XGPS command does not have 5 arguments but 4. 

Can you try issuing  AT#XGPS=1,0,0,0 instead?

Kind regards,
Øyvind