testing whether a pin is in open drain/pushpill mode

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nicky.r

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Hello,

Could you please suggest various ways by which I can test whether a pin is in open drain mode or pushpull mode without disabling the pullups.

Thanks
 

It depends on the pull-up value but when the output is high, see how low it goes when you try to pull it to ground with a 1k resistor.

Keith
 
Thank you very much.I will try doing this
 

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