Hi,
Could you please run with the env var PYUSB_DEBUG=debug and post the logs?
2014-11-25 3:31 GMT-02:00 Setia Budi <boedy.b...@gmail.com>:
> Actually, libusb is available on Yocto Linux:
>
> root@clanton:~# ls /lib/ | grep libusb
> libusb-0.1.so.4
> libusb-0.1.so.4.4.4
> libusb-1.0.so.0
> libusb-1.0.so.0.1.0
>
> But still, every time I call my script, I always have 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
>
> Kind regards,
> Budi
>
>
> On Tue, Nov 25, 2014 at 12:49 PM, Setia Budi <boedy.b...@gmail.com> wrote:
>>
>> configure: error: in `/home/root/libusb-1.0.9':
>> configure: error: no acceptable C compiler found in $PATH
>>
>>
>> Need to get c compiler >.<
>>
>>
>>
>> On Tue, Nov 25, 2014 at 12:23 PM, Setia Budi <boedy.b...@gmail.com> wrote:
>>>
>>> Thanks for the hint. I will try it now :)
>>>
>>> Kind regards,
>>> Budi
>>>
>>> On Tue, Nov 25, 2014 at 12:17 PM, Xiaofan Chen <xiaof...@gmail.com>
>>> wrote:
>>>>
>>>> On Tue, Nov 25, 2014 at 7:33 AM, Setia Budi <boedy.b...@gmail.com>
>>>> 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
>>>>
>>>>
>>>> ------------------------------------------------------------------------------
>>>> Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server
>>>> from Actuate! Instantly Supercharge Your Business Reports and Dashboards
>>>> with Interactivity, Sharing, Native Excel Exports, App Integration &
>>>> more
>>>> Get technology previously reserved for billion-dollar corporations, FREE
>>>>
>>>> http://pubads.g.doubleclick.net/gampad/clk?id=157005751&iu=/4140/ostg.clktrk
>>>> _______________________________________________
>>>> pyusb-users mailing list
>>>> pyusb-users@lists.sourceforge.net
>>>> https://lists.sourceforge.net/lists/listinfo/pyusb-users
>>>
>>>
>>
>
>
> ------------------------------------------------------------------------------
> Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server
> from Actuate! Instantly Supercharge Your Business Reports and Dashboards
> with Interactivity, Sharing, Native Excel Exports, App Integration & more
> Get technology previously reserved for billion-dollar corporations, FREE
> http://pubads.g.doubleclick.net/gampad/clk?id=157005751&iu=/4140/ostg.clktrk
> _______________________________________________
> pyusb-users mailing list
> pyusb-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/pyusb-users
>
--
Best Regards,
Wander Lairson Costa
------------------------------------------------------------------------------
Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server
from Actuate! Instantly Supercharge Your Business Reports and Dashboards
with Interactivity, Sharing, Native Excel Exports, App Integration & more
Get technology previously reserved for billion-dollar corporations, FREE
http://pubads.g.doubleclick.net/gampad/clk?id=157005751&iu=/4140/ostg.clktrk
_______________________________________________
pyusb-users mailing list
pyusb-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/pyusb-users
