QT Py board.NEOPIXEL_POWER is always in use

[dhalbert]

On the Qt Py, board.NEOPIXEL_POWER cannot be controlled, by, say, doing digitalio.DigitalInOut(board.NEOPIXEL_POWER). The pin is always in use, because it is set to high in board.c and also set to never reset. But if the never_reset is removed, then the pin does get reset, and the status NeoPixel goes out. So it needs to be special-cased in some way.

[dhalbert]

Related to #4448.

[tannewt]

Ya, I think we need to add a mechanic for board power management. It'd be able share the pin with user code like neopixel and dotstar already do.

[Neradoc]

Fixed by #4743

[dclaar]

This still seems broken on https://learn.adafruit.com/adafruit-qt-py-esp32-s2 at 7.1.1.
Should I open a new issue for that?

>>> import digitalio
>>> import board
>>> np_power = digitalio.DigitalInOut(board.NEOPIXEL_POWER)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ValueError: NEOPIXEL_POWER in use

boot_out.txt:

Adafruit CircuitPython 7.1.1 on 2022-01-14; Adafruit QT Py ESP32S2 with ESP32S2
Board ID:adafruit_qtpy_esp32s2

[anecdata]

Seems to have been fixed on the main branch:

Adafruit CircuitPython 7.2.0-alpha.1 on 2021-12-29; Adafruit QT Py ESP32S2 with ESP32S2
>>> import digitalio
>>> import board
>>> np_power = digitalio.DigitalInOut(board.NEOPIXEL_POWER)
>>> 

[dclaar]

Yes, thanks!