Re: [pyusb-users] Errno 2 - Entity Not Found

[Xiaofan C. <xia...@gm...>]

On Wed, May 16, 2018 at 9:35 PM, Roland King <ro...@ro...> wrote:
> .. my first post ..
>
> I have a device (Atmel running their vendor development USB stack).
>
> It has one configuration, one interface two alternates as they use an
> isochronous endpoint and you can’t have that in the default configuration.
> With the simplest example I can come up with I get ‘Errno 2  - entity not
> found’ on any access to any endpoint on the device.

I think pyusb may not work well with isochronous transfer. I have never
tried myself.

You may want to try out using C first to see if the device works under
plain libusb under Mac OS X.

You can also try this. It claims to support isochronous transfer.
https://github.com/vpelletier/python-libusb1

-- 
Xiaofan