How to configure GPIO output to float?

[Jerod]

The ENable pin on addition hardware component requires "floating" to power on, and drive low ( less than 1.25V) to turn off.

Unclear based on my understanding of the chipset if this is deterministically possible.

I read one odd person suggest that configuring the output as an input is a method to enable "floating".

Is that true, and reliable?

We'd like to understand if it's best just to add appropriate hardware to the board to enable this state, or if it's safe to use it this way.

Help would be appreiciated!

[JohnBrown]

If you're using the nRF51822, then the I/O pins are very configurable. You can set an individual pin as S0D1, which is shorthand for "Standard 0, Disconnect 1". That should be exactly what you are looking for.