Matrix user forums

Yes it is really odd... and it gets stranger ... When connected to the PSU the AT91SAM device works perfectly !!! It just doesnt get recognized by my computer.

A simple 9VDC power supply

Hi Ben,

Sorry no inprovement. However i did get the USB port to recognize my ARM board by setting the Power supply jumper to USB.

It still doesn't see the EB031 when the PSU is selected.

KK

Hi Ben, I forgot to mention i'm using Win XP SP3, so the workarround you suggested doesn't work for me. This really is strange behaviour. Like I said; if i put a small hub in between it works fine. But than again from the USB point of view that is normal behaviour. A USB port on a Hub connected to t...

Sorry, I forgot to mention that if i try to connect my ARM to the same USB port but with a Hub in between it does correctly identifies itself.

Seems like the port somehow gets poisened with "Unkown USB device" during execution ...

How can i correct this problem?

KK.

Sorry to have to stir this one up... I have encoutered the same problem the EB034 does not identfy itself. And to make things even more strange... it does on an other computer. I've tried all suggested solutions, nothing works ... exept the other computer. My USB port isn't broken since it does mana...