Can't toggle the GPIO P0.22 in the nrf52840 DK

[Karthik_P]

I know this pin is used in QSPI even after disabling the QSPI I am unable to toggle the GPIO what is the reason.

And this the sane pin I'm using for I2C that's not working.

[Priyanka]

Hi Karthik,

The P0.22 is by default, as you mentioned, used for QSPI. In order to use them for other purposes, you need to cut SB15 and short SB25 as mentioned here:

https://docs.nordicsemi.com/bundle/ug_nrf52840_dk/page/UG/dk/hw_external_memory.html#external_memory 

Have you done this?

Regards,

Priyanka

[Karthik_P]

Hi Priyanka, 

If I use P0.22 and P0.25 for I2C communication it should without any problem right? or Is there any Config change need to be done.

Regards,

Karthik