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Date:      Sun, 22 Apr 2012 14:55:20 +0930
From:      "Daniel O'Connor" <doconnor@gsoft.com.au>
To:        Yuri <yuri@rawbw.com>
Cc:        freebsd-usb@freebsd.org
Subject:   Re: Is there a facility to send USB requests through the script?
Message-ID:  <B957ABB9-8E23-4BD7-98FA-C115D1F3E8DA@gsoft.com.au>
In-Reply-To: <4F939175.50207@rawbw.com>
References:  <4F939175.50207@rawbw.com>

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On 22/04/2012, at 14:34, Yuri wrote:
> I am looking at the USB webcam device that doesn't work on BSD =
(stalls).
> I have the log of linux USB communcation to the same device, where it =
works fine.
>=20
> Is there a way I can send the particular requests to USB device =
through script, as a debugging facility, so that I can easily change =
what is sent, compare what is received to what I have in log, and make =
changes?


AFAIK there are no shell commands for this, however you can get libusb =
bindings for Python, Ruby, etc..

> I know that kernel also sends some requests to the USB device, and I =
would like to disable this in such case.

If there is no driver then the kernel will only enumerate it which is =
the bare minimum to give it an address and read out the configuration =
descriptors.

--
Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
"The nice thing about standards is that there
are so many of them to choose from."
  -- Andrew Tanenbaum
GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C









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