LPC2378 USB Mass Storage device problem

Hi to all
I have used the keil USB mass storage device example on my LPC2378 board. 
The firmware works fine until I connect to the USB another board.  If the
boards are more than one, only the firs works.  Moreover if the PC boots
with the boards yet connected, only one works.  If I connect the second the
PC crashes.  Did someone know how to solve this problem ?
best regards

	   
					
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Op Wed, 21 Oct 2009 12:50:52 +0200 schreef kemes <fr.cuzzocrea@libero.it>:
> Hi to all
> I have used the keil USB mass storage device example on my LPC2378 board.
> The firmware works fine until I connect to the USB another board.  If the
> boards are more than one, only the firs works.  Moreover if the PC boots
> with the boards yet connected, only one works.  If I connect the second  
> the
> PC crashes.  Did someone know how to solve this problem ?

The real problem is that if you would have known enough about USB, then  
you already knew what the problem is.  Obviously the two devices have the  
same USB device numbers, causing confusion at the host.


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