simulate usb device

Alan Stern

2007-12-17 16:21:00 UTC

Post by Ricardo Kirkner
Hello,
I am trying to find out if it would be possible to simulate a usb device
in linux. I have a device that I want to simulate by software (I want to
make the device appear under /proc even though it is not actually
connected), in order to be able to develop software that uses that
device on hosts that don't have that hardware connected.
This would also enable to debug the firmware and/or to develop the
firmware before actually having the physical device available.
Is this possible to do? How should I approach this problem?

It is possible, although probably not the way you have in mind. See

http://www.linux-usb.org/gadget/

especially the part about dummy_hcd. If you have a Linux gadget driver
for your peripheral, then you can test it under dummy_hcd without using
any peripheral hardware.

But if all you have is firmware for some peripheral controller chip,
then you would have to write an interpreter or emulator for the
firmware and stick it inside a gadget driver. Overall this probably
would be harder and more error-prone than simply waiting for the
physical device to become available.

Alan Stern

-------------------------------------------------------------------------
SF.Net email is sponsored by:
Check out the new SourceForge.net Marketplace.
It's the best place to buy or sell services
for just about anything Open Source.
http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace
_______________________________________________
linux-usb-***@lists.sourceforge.net
To unsubscribe, use the last form field at:
https://lists.sourceforge.net/lists/listinfo/linux-usb-devel