Can't open syscall/gpio.h

Hi everyone,

I am getting this build error while I am trying to call a function from gpio.h in my custom code

Looking at my includes I see this

This is a really old SDK version (2.1.0) because this sample software was created on this version (if anyone has advice for how to bring software up to date that will be helpful)

The board is nRF52833DK

Does anyone have any advice on how I can approach this

Thanks

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