Scrapped busdog as is wasn't showing the full packets. USBlyzer showed me that the data I was seeing was a control transfer and not from the interupt EP. All good now.
Cheers D On 16 December 2012 23:12, ragman <gaza...@gmail.com> wrote: > On 16 December 2012 22:50, Wander Lairson Costa > <wander.lair...@gmail.com> wrote: >> 2012/12/16 ragman <gaza...@gmail.com>: >>> Hi Folks, >>> >>> USB newbie here. I'm trying to (understand and) read data from an >>> interrupt endpoint: >>> Endpoint Descriptor: >>> bLength 7 >>> bDescriptorType 5 >>> bEndpointAddress 0x81 EP 1 IN >>> bmAttributes 3 >>> Transfer Type Interrupt >>> Synch Type None >>> Usage Type Data >>> wMaxPacketSize 0x0008 1x 8 bytes >>> bInterval 8 >>> >>> using: >>> print dev.read(0x81,8,0,1000) >>> >>> But I'm getting timouts every time, no matter the timout setting. As >>> I'm still learning USB I'm guessing I misunderstand (most of it) >>> interuppt endpoints. >>> >>> busdog shows me that the native software reads 2 bytes device every 60 >>> seconds. >>> Any help would be...helpful and much appreciated. >>> >> >> Did you issue a set_configuration()? >> >> -- >> Best Regards, >> Wander Lairson Costa >> > > Thanks Wander, > > Yes I did and can send ctrl_transfers to it successfully. > > Cheers, > D ------------------------------------------------------------------------------ LogMeIn Rescue: Anywhere, Anytime Remote support for IT. Free Trial Remotely access PCs and mobile devices and provide instant support Improve your efficiency, and focus on delivering more value-add services Discover what IT Professionals Know. Rescue delivers http://p.sf.net/sfu/logmein_12329d2d _______________________________________________ pyusb-users mailing list pyusb-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pyusb-users
