> I'm using Microchip's usb_function_generic.c to pass text commands back
> and forth in several products. Every time Microsoft changes something, ou=
r
> USB drivers stop working or become difficult to install. Is there a way t=
o
> use usb_function_generic with a driver that ships with Windows to avoid
> driver installation issues? We're currently using a VID and PID assigned
> by Microchip. Does this further complicate things in that the driver
> expects to work with a particular VID/PID combination? I only work on the
> PIC side of this, but I'd like to give our Windows guy something so he
> doesn't spend all his time fighting this.
>=20
> Thanks!
>=20
> Harold
>=20

I have seen something on the Microchip forum about Microsoft OS Descriptors=
=20
which include generic devices that communicates through WinUSB.sys. When us=
ing=20
the correct descriptor, you should not need to make your own custom .INF fi=
le.

This is built in from Windows 8 but earlier OS's (from XP SP3, if I remembe=
r=20
correct) can also benefit from this by using a specific certified .INF file=
=20
(which installs WinUSB.sys without user intervention).

Unfortunately, I can't get access to the Microchip forums right now to prov=
ide=20
a link, but you should be able to search for it when the forum is up again.=
=20
According to Google, "USB stack and microsoft os descriptors" should  be a =
good=20
search phrase.

/Ruben
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D
Ruben J=F6nsson
AB Liros Electronic
Box 9124, 200 39 Malm=F6, Sweden
TEL INT +46 40142078
FAX INT +46 40947388
ruben@pp.sbbs.se
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D

--=20
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