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Re: [Discuss-gnuradio] number of blocks in a burst over USB
From: |
George Nychis |
Subject: |
Re: [Discuss-gnuradio] number of blocks in a burst over USB |
Date: |
Wed, 30 May 2007 13:47:44 -0400 |
User-agent: |
Thunderbird 1.5.0.10 (X11/20070417) |
Eric Blossom wrote:
>
> What do you mean by "lock up"?
Mouse, keyboard, whole computer becomes unresponsive *completely*
> Is it burning CPU cycles?
It does for about a second or two, and then becomes unresponsive to everything
on 2 of the
machines, only stuttered mouse movement on a third machine.
> Have you tried running it under gdb?
Under gdb it gets to writing the vendor extension command to the USRP, found in
write_cmd() of usrp_prims.cc ... and right when it executes usb_control_msg()
in this
method is when the machine goes downhill and never returns.
> Don't enable real-time until you get this sorted out.
Definitely.
test_usrp_basic_rx in the usrp/host/apps/ directory works fine for me. I do
not see
anything different from the construction of the RX side other than the xfer USB
block size
and number of blocks to allocate.
- George