ESP32 Wroom32 - External Pull-up/Pull-down on GPIO34-39

[slaaanggggg]

Hi there.

I'm working on a ESP project where I use ESP32-Wroom32 and I have several inputs for my application. I need to have Pullups in GPIO34-39. As they were only Input pins and do not have internal software pullups/Pulldown. Is that okay to have external Pullups on those pins or Is there any reason for not having internal pullups.

Thanks in Advance!!!

[ruilviana]

@slaaanggggg

there any reason for not having internal pullups.

Hi, this question looks better on the forum https://www.esp32.com/

[Idahowalker]

The ESP32's portB does not have internals. PortB is intended as input only. This is all in the documentation, API Reference - ESP32 - — ESP-IDF Programming Guide latest documentation. If you want to run portB like portA then use the RTC_GPIO API, as per the docs.