On Tuesday 28 February 2006 9:48 pm, Marc Singer wrote:
> The question is this: what is the simplest gadget to use for debugging
> a UDC driver? I started with the serial gadget because I figured it
> would be easy to verify that it is working.
Gadget Zero is designed to be the place to start; see also the scriptable
tests (and other testing information) at
http://www.linux-usb.org/usbtest/#gadgets
Be sure to download not just "testusb.c" to whack it using common
types of sadism, but also use "test.sh" to make sure you hit some of
the significant boundary conditions (short packets, patterns, etc).
You will likely find getting control transfers to behave with "test 10"
overnight will be ... interesting, but worthwhile. Once you can leave
your host running "sh test.sh control in out" overnight, the driver
will be sufficiently revived for most purposes. :)
- Dave
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