I imagine you get the 3 LEDS lighting up? That's caused by the softdevice throwing an internal error - at that point the only thing Espruino can do is to reboot.
I think realistically you might be better off trying to build your own firmware with NFC disabled - it's probably easier to do it from C-land. Or, depending on what you're trying you could unsolder the IR LED and use those pins, or perhaps use an IO expander? :)
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Oh yes, a lot - for instance with http://www.espruino.com/NRF52LL
So I think it's that particular register.
I imagine you get the 3 LEDS lighting up? That's caused by the softdevice throwing an internal error - at that point the only thing Espruino can do is to reboot.
I think realistically you might be better off trying to build your own firmware with NFC disabled - it's probably easier to do it from C-land. Or, depending on what you're trying you could unsolder the IR LED and use those pins, or perhaps use an IO expander? :)