[USRP-users] b200 Overflows

Simon Brown simon at sdr-radio.com
Mon Sep 29 13:53:25 EDT 2014

And what makes this worse is new laptops with only USB3.


Simon Brown G4ELI


From: Marcus D. Leech [mailto:mleech at ripnet.com] 
Sent: 29 September 2014 18:23
To: Simon Brown; 'Ian Buckley'
Cc: usrp-users at lists.ettus.com
Subject: Re: [USRP-users] b200 Overflows


On 09/29/2014 01:17 PM, Simon Brown wrote:

Don't blame me, it's a user of my software who's doing this.


Simon Brown G4ELI


Ha!  No blame implied, Simon.   But you should suggest that they try the
USRP1 on a USB-2.0 port.  USB-3.0 still has some very-rough edges, and
  backwards-compat with some types of USB-2.0 high-speed devices is one of
them.  It's a chicken/egg problem.  On the one hand, you'd like
  for no devices to "issue" until the USB-3.0 "ecosystem" is stable and all
the dark-corners explored.  On the other hand, that will never happen if
  aren't USB-3.0 devices "out there" pushing the envelope, making the whole
ecosystem better...

From: Marcus D. Leech [mailto:mleech at ripnet.com] 

The FX2 USB controller on the USRP1 and B100 was designed *long* before
USB-3. 0 was even a dream.  It doesn't surprise me that some USB-2.0
  devices don't work right with USB-3.0 controllers.



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