GNSS on nrf9151-DK not work

[Jaroslav Havel]

HI everybody,

I have problem with my Nordic nrf9151-DK. I am not able to use GNSS with this kit.  A looked at documentation and found, that i have to activate XCOEX0. I did it, try to measure voltage at this pin, but it doesn't help. I am able to activate GNSS, but it not sending anything. Coliud be problem with signal.? I tried it outside and inside, in both cases it doesn't work. U used external power supply to suply kit, cause i see LED5 is blinking in period when GNSS try to get data (supply antena, current pulzes).

I tried example of GNSS in zephyr, it works (tracking 12, if it is fine to say it works), but after some times, it stopes. Could somebody show me how to work with Nordic GNSS please?

I am beginner, it could be easy (and stupid) for somebody who is an expert.

Regards

Jaroslav

[Charlie]

Hi,

Thanks for checking with us.

Can you confirm that you are running Cellular: GNSS with latest NCS 2.9.0? Please also make sure that your MFW is the latest v2.0.2.

The default GPS antenna on nRF9151DK board is good enough if you test under open sky, the cold start TTFF without A-GPS could take up to two minutes normally. Did you wait longer enough? GNSS need to use at least 4 satellites to caculate a fix.

A hardware issue could also be possible, it would be great if you have one more nRF91xxDK to test along side the issue nRF9151DK.

Best regards,

Charlie

[Jaroslav Havel]

I fixed it. Thanks for the help.

Regards 

Jaroslav

[Ulf Gerlach]

Hi,

might be that I have a similar problem with the DK. How did you solve it?

Regards 

Ulf

[Jaroslav Havel]

Hi Ulf,

My problem was that I had poor signal strength inside the building. When I went outside with the development kit, I managed to get a signal. As for the code, I didn't change or modify anything.

Regards

Jaroslav

[Ulf Gerlach]

Thanks a lot. This was it for me also. Got fast results in free air.

Regards

Ulf