[pyusb-users] Can't find my usb device

[Brendan S. (eTRIX) <bre...@et...>]

My usb device can not be found with pysub (v1.0.0a).
I am running on OS X 10.6 and have installed libusb-1.0.8 (=>/usr/local/lib)

I have python2.7 installed, and installed pysub with "pip install pyusb"

Following the tutorial, dev = usb.core.find() does return an object :)

However, dev = usb.core.find(idVendor=myVID, idProduct=myPID) returns
None :(

dev = usb.core.find(find_all=True) does return a list of devs, but none
of them are my usb device.  It seems like a limited set.

I tried the same thing with my python 2.5 and python 2.6 installs, but
with these I get:
ValueError: No backend available

I don't know why I get this with python2.5 and python2.6, but not with
python2.7.  All I can think of is that python2.7 is my default python,
but that shouldn't make any difference should it ??

Is it a python problem or a libusb backend problem ??
Would I have better luck with openusb ??

I tried building openusb but couldn't get it to build.  I had to run
configure and that failed.  It failed due to pkg-config not being
installed.  I didn't bother going any further, but if someone tells me
this will fix the problem then I will persist :)

Thanks for any help in getting pyusb working on my OS X 10.6 host.

Cheers, Brendan.