Op woensdag 13 november 2013 22:30:38 UTC+1 schreef Paulo Ferreira: > > > On 13/11/2013, at 18:12, [email protected] <javascript:> wrote: > > ............................ > > I agree with you on the USB specifications. However, my point is that I > ran the same software on both a normal computer and the BeagleBoard. On the > normal computer everything works fine while on the BeagleBoard-xM the > device starts to oscillate. Back to the normal computer, it works fine > again. Now assuming that all LS/FS/HS USB specifications are the same, how > can this happen? Any suggestion on what I can be missing that is not the > same ? > > > > > > Please try an oscilloscope. > > > > That's a good suggestion. Have to find one. > > > > hvn > > Well, between a "normal" PC and a BeagleBoard, the "only" things that > change are: the compiler, the processor's architecture, the processor's > clock speed, the memory interface, the caches, the peripheral's connection > to the processor and the interrupt architecture. > > If you are expecting no influence from those changes, you need to wake > up. :-( :-( >
Oh, I'm wide awake and do know it's a RISC board and thus different. But despite that, an ordinary mouse, keyboard and webcam work well. if you consider Sparc (RISC as well)...not an "ordinary" computer either, but mechanical devices are proven to work. So being different in architecture doesn't mean it can't or won't work. Still looking for an oscilloscope. > > Best regards > > Paulo Ferreira > > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
