devkitPro

I've had a bit more of a look into it, trying IOS_Open(...) on each of the usb paths (/dev/usb/{oh0,oh1,ven,hid}) and the device specific paths for two attached USB devices: one that can be opened using USB_OpenDevice(...) and one that can't. Below is a list of the file descriptors (or errors ...

When using USB_OpenDevice(...) from ogc/usb.h some devices won't open correctly, even though they appear in the usb_device_entry array provided by USB_GetDeviceList(...). The call to USB_OpenDevice(...) returns -2.

I've seen it happen with 3 devices so far, a Microsoft mouse, an Apple keyboard and ...