Port, board and/or hardware

rp2 port with RP2350B

MicroPython version

v1.24.0-preview.461.gb8227a3f7.dirty

Reproduction

import neopixel
import machine

pin = 32

p = machine.Pin(pin)
n = neopixel.NeoPixel(p, 1)

n[0] = (127, 0, 0)
n.write()

Expected behaviour

A NeoPixel connected to pin should illuminate.

Observed behaviour

A NeoPixel connected to pin only illuminates if pin is <32. If pin is >=32, the NeoPixel does not illuminate.

Additional Information

The root problem appears to be here:

gpio_set_mask() requires a 32-bit value, so the shifted bit gets truncated when using a pin >= 32. There is a gpio_set_mask64(), however for some reason it didn't work when I tried it (I didn't dig into it). However changing to gpio_put() works fine on my end.

Code of Conduct

Yes, I agree