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Set GPIO to High Impedance mode

blue_dolphin1987
Associate II

‎2014-04-25 12:43 AM

Posted on April 25, 2014 at 09:43

Hi , 

I am working on a project that requires the GPIO to be set to tri state HIGH/LOW/HIGH IMPEDANCE mode.

Is there a way to set a gpio on STM32F4 to high impedance ?

Thanks.
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1 REPLY 1
waclawek.jan
Guru

‎2014-04-25 03:11 AM

Posted on April 25, 2014 at 12:11

Turn it to input (MODERi = 00).

Alternatively, set output to high and change it from push-pull to open-drain (OTYPERi = 1).

JW

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