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How to ensure UART pin does not go tristate when closed?

Started by Klop, Jun 01 2011 02:30 PM

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#1 Klop

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Posted 01 June 2011 - 02:30 PM

Hi, Everytime I close the UART the UART pin goes tristate. How can I ensure this doesn't happen? Eg. the port must be kept high after the close command. Thanks.

#2 Mario Vernari

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LocationVenezia, Italia

Posted 01 June 2011 - 02:34 PM

I guess should be correct, because you should be able to leave the pins free when it is not in use. The workaround is trivial: place an external pull-up (10K) to +3.3V. Cheers

Biggest fault of Netduino? It runs by electricity.

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