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  • Case ID: 300547
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GNSS sample vs Location sample

flau

Hi Everyone,

I have a custom board with a nRF9160.  I have updated the firmware to 1.3.3.  I am using SDK 1.9.1.  I found that the board works well with the GNSS sample from the SDK.  The board can typically see 10-11 satellites, track 5-8 of them and give me a good location.  However, when I run the Location sample from the SDK, it only sees1-2 satellites when I placed the board at exactly the same location.  I even put 2 boards side by side, 1 running the GNSS samples, the other running the Location sample.  The GNSS sample always perform well.  Are there any different between the GNSS sample and the Location sample?  I would like to obtain the same good result with the Location sample as with the GNSS sample.  Are there anything I have to change to achieve that?  Many thanks.

Regards,

Floyd

  • 0 in reply to flau

    > I build my own application based on the Location sample.  I have to add MQTT, AWS, PWM, I2C, SPI and thread on top of the Location sample. 

    Maybe, the very first step to reduce the scope of this issue would be to use a "unmodified sample app" of NCS-1.9.1 (or 2. what ever).

    If that runs, then it may be more an issue of the modifications for your app. Even if they compile and did work with a previous version, this doesn't mean, it must work with a newer one. It may require more work to revise these modifications according the new related samples of each extension. Nice work for the new-year vacation ;-).

  • 0 in reply to Achim Kraus

    I am running the Location sample straight from the SDK without any modification other than the overlay, Kconfig and prj.conf.  I think my next step will be testing the device and the DK at an open field and see if I get the same result.  Maybe testing at a window ledge isn't good enough.  

  • 0 in reply to flau

    Hello, and happy new year!

    flau said:
    I think my next step will be testing the device and the DK at an open field and see if I get the same result.  Maybe testing at a window ledge isn't good enough.  

    Yes, please test out in field in an open area.

    Achim Kraus said:
    Maybe, the very first step to reduce the scope of this issue would be to use a "unmodified sample app" of NCS-1.9.1 (or 2. what ever).

    Yes, this would also be my suggestion. See if the unmodified sample gives the same results.

    Thanks.

    -Øyvind

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