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Gaston
Graduate
October 11, 2020
Solved

ST25R3916 CSI and CSO pins

  • October 11, 2020
  • 1 reply
  • 889 views

Hi,

I don't want to use the ST25R3916 capacitive card detection that involves CSI and CSO pins. Can I leave this pins unconnected? What part of rfal should I remove to do this?

Thanks in advance,

gaston

    This topic has been closed for replies.
    Best answer by Ulysses HERNIOSUS

    Hi Gaston,

    you can leave these pins unconnected. However in case of receiver issues you may want to inspect some internal receiver signals (observation modes). Therefore I would foresee at least some test points.

    If you don't explicitly request capacitive wake-up mode it will not be used. However some support code would still stay.

    Using RFAL_FEATURE_WAKEUP_MODE you can disable the wake-up mode altogether - inductive and capacitive modes. Currently we don't have an option for disabling them more fine-granular. I think it would only save few bytes.

    Regards, Ulysses

    1 reply

    U
    Ulysses HERNIOSUSAnswer
    Technical Moderator
    October 12, 2020

    Hi Gaston,

    you can leave these pins unconnected. However in case of receiver issues you may want to inspect some internal receiver signals (observation modes). Therefore I would foresee at least some test points.

    If you don't explicitly request capacitive wake-up mode it will not be used. However some support code would still stay.

    Using RFAL_FEATURE_WAKEUP_MODE you can disable the wake-up mode altogether - inductive and capacitive modes. Currently we don't have an option for disabling them more fine-granular. I think it would only save few bytes.

    Regards, Ulysses

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