2+ HID Interfaces on a single device

[zlittell]

Describe what the question is
I see the composite example uses a keyboard and mouse on the same interface. When I try to add multiple interfaces I start to get "device not started" issues. The descriptors come in and then it stalls. Is what I am trying to do supported by TinyUSB? If so can someone who has experience with it give me some pointers on what needs to be done to get this type of device rolling.

Most other libraries have you list the report descriptors separately per interface.

Here is a GIST to play with:
https://gist.github.com/zlittell/ff8ca12fdf11228a6f95212dd6a2cb31

[hathach]

90% of the work for multiple HIDs are done, though it is not very often used by most application. If you are willing to submit pr to add HID multiple interfaces support. I am happy to review. You could take a look at multiple CDC API for reference
https://github.com/hathach/tinyusb/blob/master/src/class/cdc/cdc_device.h#L61

[zlittell]

working on this now. making good progress, so hopefully all works as planned

[hathach]

working on this now. making good progress, so hopefully all works as planned

great to hear that, the most annoying part is we have to add itf arguments to all of the callbacks() API, which break current applications. I should have added that in the first place.