Issue with USB on Adafruit Feather RP2040 USB Host

[crunchymaggots]

I've been using this project to help fix a design fault with a sim racing gear shifter, and it's gone amazing on my Pico 2, but I want to be able to share this fix with others without requiring them to know how to solder, and tried using an Adafruit Feather RP2040 with an integrated USB Host as a solve.

It does feature a config in the project, and builds as expected with:
cmake ../src -DPICO_BOARD=ADAFRUIT_FEATHER_RP2040_USB_HOST

When plugged in, it does appear as a gamepad, however, it doesn't pass through any gamepad input from the connected device, and the light doesn't come on either, leading me to believe it's not recognizing the device over the USB port.

This is odd to me, because everything I've read suggests that it still uses GP16 and GP17 for it's USB. It also isn't communicating over TX and RX, it's versions of GP0 and GP1, so I can't get any definitive answers out of it either.

https://learn.adafruit.com/adafruit-feather-rp2040-with-usb-type-a-host/pinouts

Do you have any ideas if there's anything hard set somewhere that might be messing with the board's pins?

[Loc15]

Hi, it looks like that board use a GPIO18 to enable the power on the USB HOST. Too, I'm gonna soon support another cheaper board with an integrated USB Host like that.

[crunchymaggots]

That was 100% it, thank you so much! I'm not a hardware person and just assumed that the USB voltage would be taken care of automatically. Setting it fixed it right up.

Also, thanks for the cheaper board. I'll add support for that to my fork too when I publish it.

Thanks you so much!