ESP32 Forum

Posted: **Sat Jul 06, 2019 3:15 pm**

Hallo
How can I switch on the PullUp- PullDown Resistors in the Arduino IDE

Posted: **Sun Jul 07, 2019 7:48 am**

When calling the pinMode function specify mode INPUT_PULLUP to enable the internal pullup resistor or specify mode INPUT_PULLDOWN to enable the internal pulldown resistor.

For example, to enable the pullup resistor for GPIO17 do this:

Code: Select all

pinMode(17, INPUT_PULLUP);

To enable the pulldown resistor for GPIO17 do this:

Code: Select all

pinMode(17, INPUT_PULLDOWN);

Note that not all GPIOs on an ESP32 have pullup and pulldown resistors.

Posted: **Mon Jul 08, 2019 12:16 pm**

Thank you very much !!!!!

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