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  • GPIO Pins

    I spent some time searching but haven't seen the answer. When using an I/O pin as an input does it have internal pull-up or do I need to supply one?

  • #2


    Anybody have answer ?

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    • #3


      pullups are required
      Regards,
      Dave

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      • #4


        Any particular value ?

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        • #5


          It's up to you and your intended application really.



          Assuming your circuit drive is not subject to too much noise a couple of hundred k ohms will be fine.
          Mark

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          • #6


            Perfect. Less power consumption, the better.

            I have been pretty much finished 90+% of our app. Is there a simple demo app in the IDE that shows writing and retrieving variables or an indexable array to/from a uSD card. With all the examples, there must be one I've missed.

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