ESP32 Forum

Hello,

I'd like to know if VP and VN could be use as normal pins when used as ADC1_0, ADC1_3, RTC, GPIO input only.

I ask this because from here viewtopic.php?t=3206 and from other topics I understand that something has changed about the use of S_VP and S_VN.

I only care about if they work as well as the other pins.

That is answered in the data sheet.
https://www.espressif.com/sites/default ... eet_en.pdf

username wrote: ↑

Sat Dec 24, 2022 12:41 am

That is answered in the data sheet.
https://www.espressif.com/sites/default ... eet_en.pdf

From page 15 and 56 of the datasheet I read that there is nothing strange on those pin, they are only input without pull-up/down.
I didn't read nothing more here, that's why I choose to write on this forum.
Can you confirm that they are "normal" pins?

Can you confirm that they are "normal" pins?

What is your definition of a "normal" pin?

username wrote: ↑

Sat Dec 24, 2022 2:44 pm

Can you confirm that they are "normal" pins?

What is your definition of a "normal" pin?

I mean a pin that doesn't hide something, e.g. some kind of inefficiency

username wrote: ↑

Sat Dec 24, 2022 12:41 am

That is answered in the data sheet.
https://www.espressif.com/sites/default ... eet_en.pdf

However I think you answered here Thanks

in the page 55, item 02 say:

GPIO pins 34-39 are input-only. These pins do not feature an output driver or internal pullup/pull-down circuitry. The pin names are: SENSOR_VP (GPIO36), SENSOR_CAPP (GPIO37), SENSOR_CAPN (GPIO38), SENSOR_VN (GPIO39), VDET_1 (GPIO34), VDET_2 (GPIO35).

input-only and no internal pullup/pull-down