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PGA460PSM-EVM: test PGA460EVM questions

Kailyn Chen
Genius 9560 points
Part Number: PGA460PSM-EVM
Other Parts Discussed in Thread: ENERGIA

Hello,

One customer used the energia to download the firmware, he wanted to use the UART to return the distance value,  but it appears ERROR - Did not receive measurement results!

Could you please help to analyze? 

Best regards

kailyn 

  • +1
    TI__Genius 15890 points

    Kailyn,

    Thanks for reaching out.  This particular error is the result of a timeout waiting for the UART to provide the entire data.  It will occur when there is less than 5 bytes of data in the buffer and 0.25 seconds have elapsed.  I would recommend checking the UART connections between the device and controller are good and verifying communication using a scope.

    Thanks,

    Scott

  • 0 in reply to Scott Bryson
    TI__Genius 9560 points

    Hi Scott,

    Thank you very much for your reply.

     The customer replied he used the 5529 demo board to connect the UART interface, so it should have no problem between controller and device.

    Any other opinions?

    Best regards

    kailyn

  • 0 in reply to Kailyn Chen
    TI__Genius 15890 points

    Kailyn,

    To debug, it is always a good step to use a scope to verify that the proper signals are being transmitted, and that there are no loose connections or working problems.  It would be best to verify that the UART communication is active when attempting to configure the device in order to try and root cause why the timeout condition is being met.

    Another approach would be to confirm whether they are able to use the EVM GUI and that everything is setup and configured per the EVM user's guide

    https://www.ti.com/lit/ug/slau817/slau817.pdf

    Thanks,

    Scott