On 01/04/2018 06:58 AM, Jun Sun wrote:
Hi, all,
I'm playing with USB gadget with configfs on raspberry pi zero w. My
goal is to setup a generic functionfs function that uses Windows OS
descriptor so that windows would automatically install winusb driver.
It seems I would have to
- enable MS-specific os descriptor
- specify the compatiblity id to be "WINUSB"
- specify interface GUID (optional?)
It seems simple enough.
You can checkout libusbgx example for a "good" values for RNDIS and
expected directory structure:
https://github.com/libusbgx/libusbgx/blob/master/examples/gadget-rndis-os-desc.c
However, the first problem I'm having is that I can't find the
os_desc/ directory for the ffs function I created.
Because there is no such directory;)
os_desc in case of functionfs are provided by daemon together with USB
descriptors.
Best regards,
--
Krzysztof Opasiak
Samsung R&D Institute Poland
Samsung Electronics
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