USB Host Hub Support is Unclear

[steve-chamberlin]

The SAMD library description specifically says "USBHost does not support devices that are connected through USB hubs", however the library contains a usbhub.cpp and .h files, and the USB_desc example appears to work with hubs. Is the library description out of date, or is the hub implementation incomplete maybe? I don't yet have SAMD hardware to try this on, and want to confirm whether I could host a keyboard and a mouse simultaneously before I buy the hardware.

[sandeepmistry]

@agdl would you be able to look into this and provide an answer?

[sandeepmistry]

@bbx10 @jcbuda do you have any information on this?

I tried using the USB_desc.ino example with a powered hub, but it would only print the info. of the hub, not the devices connected it it.

I also tried adding a USBHub Hub1(&usb); line like was indicated in the sketch, but then nothing was printed out.

[bbx10]

The last time I looked, there is no hub support.

[sandeepmistry]

Thanks @bbx10.

@steve-chamberlin so there is no support for USB hubs then. However, we welcome pull requests to add support for them.