2010/4/14 Xiaofan Chen <xiaof...@gmail.com>: > On Wed, Apr 14, 2010 at 10:24 PM, Wander Lairson > <wander.lair...@gmail.com> wrote: > >> Deeper investigation showed that it is caused by calling >> set_configuration twice when device is connected. Example: >> >> import usb.core >> d = usb.core.find(idVendor=0xfffe) >> d.set_configuration() >> d.write(1, '0123456789') >> d.read(0x81, 10) >> >> The first time after connecting the device you run this script, it >> works fine, but next tries cause timeout error. If you disconnect and >> connect the device again, it works again. I suspect this is a test >> firmware bug. Keep investigating... >> > > You seem to have two test firmware, one for PIC, one for ARM. > I only tried the PIC. You are basing your PIC firmware on the > old V1.x stack which may have some issues. > http://www.microchip.com/forums/tm.aspx?m=275422 Yes, I am using PIC (I lost ARM dev board).
> > And there are quite often problem like this: first run works and > then 2nd run got time out. Typically the issue only happens > under Linux. It is mostly related to set_interface command response. > > In this case, it is under Windows. So maybe the issue is different. I guess so. I will upgrade test firmware to version 2.6a and check it again. Thank you for the information. > > -- > Xiaofan http://mcuee.blogspot.com > > ------------------------------------------------------------------------------ > Download Intel® Parallel Studio Eval > Try the new software tools for yourself. Speed compiling, find bugs > proactively, and fine-tune applications for parallel performance. > See why Intel Parallel Studio got high marks during beta. > http://p.sf.net/sfu/intel-sw-dev > _______________________________________________ > pyusb-users mailing list > pyusb-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/pyusb-users > ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ pyusb-users mailing list pyusb-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pyusb-users
