[hpsdr] libusb

[John Melton]

Hi Alfred,

I cannot help with the windows port as I did not do it and have no
Windows systems to test on.

However, multiple Mercury cards do work with no problems under Linux
using ghpsdr3.

-- John g0orx/n6lyt

On Fri, 2011-01-21 at 14:10 +0100, wully wrote:
> ***** High Performance Software Defined Radio Discussion List *****
> 
> Hi all
> 
> I'm starting to use two Mercury boards on the same ATLAS-Bus. Using the 
> server.exe from John Melton G0ORX in the version ported to windows, I 
> notice, that there is a problem with bulk-read:
> 
> The error is
> ozy_ep6_ep2_io_thread: OzyBulkRead read failed -5
> 
> -5 seems to indicate "General I/O-error"
> 
> This error occurs only, when 2 boards are present.
> 
> When 1one board with the wrong mercury-ID is there, the same error 
> message but with errnumber -116 occurs, which indicates Time-out (that 
> sounds reasonable to me).
> 
> I assume, that two boards, each running at 96kHz Sampling rate, use more 
> usb-bandwidth, but even increasing the priority of the process to "high" 
> does not change the behavior.
> 
> Any suggestions?
> 
> 73, HB9EPU, Alfred
> 
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