sen1_pwren GPIO pin is not able to power OFF/ON

RE: sen1_pwren GPIO pin is not able to power OFF/ON

Einar Thorsrud — Fri, 14 Nov 2025 07:46:23 GMT

Hi,

I see. If you are using a NFC pin as GPIO you need to specify that in the devicetee like this (see an example here):

&uicr {
	nfct-pins-as-gpios;
};

Note that this will not work if you are using TF-M. For that you need this change, which will be part of nRF Connect SDK 3.2.0.

RE: sen1_pwren GPIO pin is not able to power OFF/ON

Naveen Krishna Yadav Malyala — Fri, 14 Nov 2025 07:17:25 GMT

I am doing the below task

Board bringup support - Implement UART test commands to turn-ON required power switches

I am trying to control the sen1pwren GPIO pin through my UART test commands
(like on sen1pwren/ off sen1pwren) sending from UART21 master link then it ON and OFF acoordingly.

Basically, i have written a test code for that, but i could see the sen1pwren pin is NFC.
Need your support why it is not working for this pin, whereas i am able to control the other GPIO pins without any issue.

RE: sen1_pwren GPIO pin is not able to power OFF/ON

Einar Thorsrud — Thu, 13 Nov 2025 13:35:06 GMT

Hi,

I am lacking some context here. Can you describe more what you are doing (perhaps show the code)? Also, what does ON/OFFm ean in this context? GPIO output pin high or low? Or something else? Please elaborate.