Date: Sun, 22 Apr 2012 08:37:57 +0200 From: Hans Petter Selasky <hselasky@c2i.net> To: freebsd-usb@freebsd.org Subject: Re: Is there a facility to send USB requests through the script? Message-ID: <201204220837.57648.hselasky@c2i.net> In-Reply-To: <B957ABB9-8E23-4BD7-98FA-C115D1F3E8DA@gsoft.com.au> References: <4F939175.50207@rawbw.com> <B957ABB9-8E23-4BD7-98FA-C115D1F3E8DA@gsoft.com.au>
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On Sunday 22 April 2012 07:25:20 Daniel O'Connor wrote: > 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. > > > > 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. You can do this using usbconfig -d X.Y do_request man usbconfig Only control transfers! --HPS
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