Hi, i am trying to use pyusb on a buildroot based embedded setup running on a ti sitara. But i struggle to get it to recognize a backend:
# python Python 2.7.11 (default, Mar 19 2016, 14:18:04) [GCC 5.2.1 20151005] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import os >>> os.environ['PYUSB_DEBUG'] = 'debug' >>> import usb.core >>> usb.core.find() 2016-03-19 22:11:46,002 ERROR:usb.libloader:'Libusb 1' could not be found 2016-03-19 22:11:46,013 ERROR:usb.backend.libusb1:Error loading libusb 1.0 backend 2016-03-19 22:11:46,079 ERROR:usb.libloader:'OpenUSB library' could not be found 2016-03-19 22:11:46,089 ERROR:usb.backend.openusb:Error loading OpenUSB backend 2016-03-19 22:11:46,258 ERROR:usb.libloader:'Libusb 0' could not be found 2016-03-19 22:11:46,268 ERROR:usb.backend.libusb0:Error loading libusb 0.1 backend The shared libs are there: # ls -la /usr/lib/libusb* lrwxrwxrwx 1 root root 19 Mar 19 14:51 /usr/lib/ libusb-0.1.so.4 -> libusb-0.1.so.4.4.4 -rwxr-xr-x 1 root root 10872 Mar 19 15:17 /usr/lib/ libusb-0.1.so.4.4.4 lrwxrwxrwx 1 root root 19 Mar 19 14:20 /usr/lib/ libusb-1.0.so -> libusb-1.0.so.0.1.0 lrwxrwxrwx 1 root root 19 Mar 19 14:20 /usr/lib/ libusb-1.0.so.0 -> libusb-1.0.so.0.1.0 -rwxr-xr-x 1 root root 57400 Mar 19 15:17 /usr/lib/ libusb-1.0.so.0.1.0 lrwxrwxrwx 1 root root 19 Mar 19 14:51 /usr/lib/libusb.so -> libusb-0.1.so.4.4.4 Now i am missing the bridge between pyusb and those shared libs. How can i debug further? I tried stracing the whole setup but i don't see it even trying to open any library. How exaclty is pyusb trying to open those libraries. Under which paths and which names is it supposed to search? Thanks, Till -- Dr. Till Harbaum <t...@harbaum.org> ------------------------------------------------------------------------------ Transform Data into Opportunity. Accelerate data analysis in your applications with Intel Data Analytics Acceleration Library. Click to learn more. http://pubads.g.doubleclick.net/gampad/clk?id=278785231&iu=/4140 _______________________________________________ pyusb-users mailing list pyusb-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pyusb-users
