|
From: | Tian Alvin |
Subject: | Re: [Discuss-gnuradio] error with running wifi_loopback.grc from gr-ieee802-11 |
Date: | Thu, 13 Aug 2015 15:36:26 +0100 |
Hi,
On 08/13/2015 04:20 PM, Tian Alvin wrote:
"mylog(boost::format("encoding: %1% - length: %2% - symbols: %3%")
% d_encoding % d_len % d_copy_symbols);"
To make it work, I still need change it to
"std::string temp = (boost::format("encoding: %1% - length: %2% -
symbols: %3%")
% d_encoding % d_len % d_copy_symbols).str();
Actually, I don't really understand the difference between these two.
What does this change mean? Does the problem relate to log4cpp?
This was suggested to debug the problem, not as a fix.
The problem is described in the issue you referenced (scroll down) and hopefully fixed by this commit
https://github.com/bastibl/gr-ieee802-11/commit/77548c73a95b0460250ef477e309190f20bf8d95
Please update the module with git.
Best,
Bastian
On Thu, Aug 13, 2015 at 3:07 PM, Bastian Bloessl <address@hidden<mailto:address@hidden>> wrote:
Hi,
yes, this is how it is supposed to look. But please read the posts
at the bottom of the thread. Actually, it should work without
modifications now.
Best,
Bastian
On 08/13/2015 04:03 PM, Tian Alvin wrote:
Hi Bastian,
I followed the suggestion on github:
*Use*
"std::string temp = (boost::format("encoding: %1% - length: %2% -
symbols: %3%")
% d_encoding % d_len % d_copy_symbols).str();
//mylog(temp);"
*to change* : in the ofdm_decode_signal.cc# L197&L198
"mylog(boost::format("encoding: %1% - length: %2% - symbols: %3%")
% d_encoding % d_len % d_copy_symbols);"
Now I can get the below result:
Inline image 1
Does this mean the flow graph has been run correctly?
Paul----Thank you very much for your suggestion and sharing!
On Thu, Aug 13, 2015 at 1:59 PM, Bastian Bloessl
<address@hidden <mailto:address@hidden>--<mailto:address@hidden <mailto:address@hidden>>> wrote:
Hi,
I just replied on github
https://github.com/bastibl/gr-ieee802-11/issues/18#issuecomment-130651522
It would be great if you could try what I suggest there.
Best,
Bastian
On 08/13/2015 02:32 PM, Garver, Paul W wrote:
Make sure logging is disabled on ALL blocks. I haven't
seen that
libstdcxx error before, but I do have the segfaults
with the
logging in
Ubuntu 15.04 with pybombs install.
Paul Garver
On Aug 13, 2015, at 7:33 AM, Tian Alvin
<address@hidden <mailto:address@hidden>
<mailto:address@hidden
<mailto:address@hidden>>
<mailto:address@hidden
<mailto:address@hidden> <mailto:address@hidden
<mailto:address@hidden>>>>
wrote:
Hi Paul,
Thanks very much for your help! I have disabled
logging and
debug in
OFDM Parse MAC block, but the error is still there.
Did you also see the below error in your case when
(gdb) run
wifi_loopback.py?
<image.png>
ImportError: No module named 'libstdcxx'
Thanks
On Wed, Aug 12, 2015 at 9:07 PM, Paul Garver
<address@hidden <mailto:address@hidden>
<mailto:address@hidden <mailto:address@hidden>>
<mailto:address@hidden
<mailto:address@hidden> <mailto:address@hidden
<mailto:address@hidden>>>> wrote:
Tian,
Disable logging and debug in the GRC
flowgraph. See if
this
solves the problem. For reference, see [1].
[1]
https://lists.gnu.org/archive/html/discuss-gnuradio/2015-07/msg00289.html
On 08/12/2015 01:23 PM,
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Dipl.-Inform. Bastian Bloessl
Distributed Embedded Systems
University of Paderborn, Germany
http://www.ccs-labs.org/~bloessl/
--
Dipl.-Inform. Bastian Bloessl
Distributed Embedded Systems
University of Paderborn, Germany
http://www.ccs-labs.org/~bloessl/
--
Dipl.-Inform. Bastian Bloessl
Distributed Embedded Systems
University of Paderborn, Germany
http://www.ccs-labs.org/~bloessl/
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