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

[Setia B. <boe...@gm...>]

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 <boe...@gm...> 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 <boe...@gm...> wrote:
>
>> Thanks for the hint. I will try it now :)
>>
>> Kind regards,
>> Budi
>>
>> On Tue, Nov 25, 2014 at 12:17 PM, Xiaofan Chen <xia...@gm...>
>> wrote:
>>
>>> 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
>>>
>>>
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>>
>>
>