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LDC2114EVM: A few minutes after turning on the power, the blue LED that should turn on at the time of the sensor response will not turn on.

user5203911
Intellectual 560 points
Part Number: LDC2114EVM
Other Parts Discussed in Thread: LDC2114

When the board is operated by supplying power only from USB of LDC2114EVM, OUT LED (D13) by conductor approach is lighted at first, and blue LED (D3-D10) for pressure is lighted normally. After a minute, the blue LED will not light up (respond).

The same may be the cause, but if you start Sensing Solution GUI EVM and connect LDC2114EVM to PC with USB, there is no problem at first, but after a few minutes the board is disconnected from the application in addition to the above phenomenon

Do you know what the cause is?

Best regards

  • 0
    TI__Genius 17440 points

    Hello,

    Could you try a new USB cable? It seems like the connection to the GUI (and perhaps the power) is being disrupted.

    Best Regards,

  • 0 in reply to Kristin Jones93
    Intellectual 560 points

    Hello. Mr.Kristin.

    Thank you for your reply.

    ■ The symptom does not change even with USB cable exchange

    I exchanged the USB cable and confirmed this symptom. The symptoms are the same, not the cable.
    After a few minutes of turning on the power, the blue LED will not respond.
    When connecting a module to a PC, it is also disconnected from the Sensing Solution EVM GUI.
    Even when the LDC2114EVM module alone is supplied with power only, the symptoms are the same even when connected to a PC via USB and the Sensing Solution EVM GUI is operated.
    The connection status changes from “Connected SSP EVM connected – LDC2114” to “Not connected SSP EVM disconnected” when connected to a PC.
    It will return to the original power on again, but after several minutes it will become the above symptoms. Is it somewhere broken?

    Even if this happens, the OUT LED by touch will light normally.

    By the way, the version of Sensing Solution EVM GUI is v1.10.0.

    Best regard

  • 0 in reply to user5203911
    Intellectual 560 points

    Postscript

    Dear Mr.Kristin


    I'm sorry.

    Suddenly this symptom disappeared. It is unclear why this symptom has been cured.

    I will be watching for a while.
    Please let me know if you have any thoughts about this condition.

    Kind regards

  • 0 in reply to user5203911
    TI__Genius 17440 points

    Hello,

    It sounds like you have solved your issue. Please feel free to post again if the issue returns. In general, issues like these are related to the connections between the LDC2114 and the MCU or between the MCU and the PC.

    Best Regards,

  • 0 in reply to Kristin Jones93
    Intellectual 560 points

    Dear Mr. Kristin,

    Thank you for your reply. It is unclear at this time why this symptom has been cured. I will be watching for a while. I will ask you again if this symptom recurs. In addition, please contact me if you come to mind about this symptom in the future.

    Best regards