Hi,

I would like to use GPIO_NUM_7 as a digital output for my app (and from the wake stub, so I am using as an RTC GPIO).

My main question: What is the proper way to set GPIO7 as an output, to avoid any conflict with the PowerFeather code? (I don't need to add any PowerFeather extension board, so I don't need the "EN" functionality).

I am confused by the difference between EN and EN0:

the Schematics names both GPIOs 7 and 13 as "EN"
there is an italic "RTC" label in front of each - what does it mean?
the Mainboard.h file mentions defines Pin::EN as GPIO 7, and Pin::EN0 as GPIO 13. It also says in comments that one is for reading, and the other is for writing
Mainboard.cpp only uses EN0 (GPIO13), for both reading and writing.

FYI - I have observed an extra current consumption in deep sleep if I plug this pin to some load, and realized that it was set to 3.3V (which I guess comes from the Board.init function). Even connecting an oscilloscope probe changes the overall board current consumption from 18-21uA to 30-34uA!

Many thanks!