Re: [pyusb-users] PyUSB on Intel Galileo Gen 2

[Xiaofan C. <xia...@gm...>]

On Tue, Nov 25, 2014 at 7:33 AM, Setia Budi <boe...@gm...> wrote:
> Hi all,
> At the moment I am working with Intel Galileo Gen2 with Yocto Linux running
> on top of it. This micro PC is planned to replace some other micro PC for
> field experiment.
> I installed pyusb on it without any issue, however, once I run my script,
> which is using pyusb module, I found this error message:
>
> Traceback (most recent call last):
>   File "pyru824.py", line 71, in <module>
>     RFID_READER = usb.core.find(idVendor=VENDOR_ID, idProduct=PRODUCT_ID)
>   File "/usr/lib/python2.7/site-packages/usb/core.py", line 1199, in find
>     raise ValueError('No backend available')
> ValueError: No backend available
>
> I am just wondering whether anyone has a solution for this problem?
> Thank you :)

Did you install libusb-1.0? For Linux it is better to install libusb-1.0
as the backend for pyusb. If your Linux distro does not provide
the package, then you need to build from source. But most
Linux distros provide libusb-1.0.

Website: http://libusb.info/
Download: http://sourceforge.net/projects/libusb/


-- 
Xiaofan