GPIO set time

[Thangaraj]

NRF52,S132 soft device, I am trying to toggle GPIO 10 (NFC pins Enabled as GPIO)in a 1us Timer, But its not happening , What may be the issue? Am using Timer 4. What is the minimum time taken on GPIO toggling

[Wojtek]

If you have register NFCPINS enabled (i understand enabled = 1), then you cant use it as gpio...