OK to swap +/- on GPIO output on nRF52840 for Neg (-3.3V) PWM Output?

[johnwest]

Hello All,

Maybe someone out there has done this - but is it AOK to swap +/- on the nRF52840 output so a -3.3V PWM signal can be generated?

Are there output zeners on the GPIO's that are going to clamp this?

Thanks In Advance,
johnwest

[johnwest]

OK - this issue can be closed ketiljo.

Thanks,
John W.