On Thu, May 9, 2013 at 2:49 AM, Michael Kuba <mem...@gmail.com> wrote: > I am relatively new to both Python and PyUSB, so I apologize in advance if > I've missed something painfully obvious. > > I am attempting to interface with a Yokogawa WT310HC digital power meter > that as far as I can tell, accepts ASCII text codes transferred over USB. > > I am running in Python 2.7.3 on Windows 2000.
Could you try a more modern OS like the soon-to-be-obsolete XP? libusb-1.0/libusbx do not support Windows 2000. At libusb-win32, the current installer still supports Windows 2000 but it may get dropped at any time since we can not test it any more. > I am getting an error that I am having trouble interpreting. I do notice > that the first command issued after the device is first plugged in will > pass, but the second will not. And if I try to rerun the program without > unplugging and plugging in the device, the first command issued will produce > the error. Usually this indicates a firmware problem in the device. But you may want to try XP/Vista/Win7/Win8 first to see if that helps. -- Xiaofan ------------------------------------------------------------------------------ Learn Graph Databases - Download FREE O'Reilly Book "Graph Databases" is the definitive new guide to graph databases and their applications. This 200-page book is written by three acclaimed leaders in the field. The early access version is available now. Download your free book today! http://p.sf.net/sfu/neotech_d2d_may _______________________________________________ pyusb-users mailing list pyusb-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pyusb-users
