On Thu, Feb 12, 2015 at 6:55 AM, Sean Kitko <sean...@gmail.com> wrote: > However, I'm running into some problems implementing the test script > provided at the tutorial here: > > https://github.com/walac/pyusb/blob/master/docs/tutorial.rst > > I brought the test script into an editor, and changed the vendor and product > id, as well as the test string sent (I changed 'test' to 'V L', which will > light an LED on my development board). > > When I run the script via powershell (Windows 7 64bit),
Firstly, did you install a supported driver and supported backend for your device under Windows? (either using libusb-win32 with libusb-win32 device driver or using libusb Windows backend with WinUSB driver). The recommendation is to use Zadig to install the device driver. If you use libusb Windows backend, then you also need the correct libusb-1.0.dll (32bit or 64bit depending on your Python installation) from libusb project. > I get the following traceback error: > > PS C:\...\PyUSB Dev> python simpletestscript.py > Traceback (most recent call last): > File "simpletestscript.py", line 27, in <module> > assert ep is not None > AssertionError > PS C:\...\PyUSB Dev> > > I don't understand enough about the library to really understand why I would > be receiving that error. Does your device have an OUT Endpoint? You can use USBview to dump the USB descriptor and post the result here. USBView: http://www.ftdichip.com/Support/Utilities.htm -- Xiaofan ------------------------------------------------------------------------------ Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ pyusb-users mailing list pyusb-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pyusb-users
