Error with running wifi_loopback.grc from gr-ieee802-11


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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

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 G.


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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:

Hi Paul,
Thanks

or, via email, send a message with subject or body 'help' to
_______________________________________________

https://lists.gnu.org/mailman/listinfo/discuss-gnuradio


Dipl.-Inform. Bastian B.
Distributed Embedded Systems
University of Paderborn, Germany
http://www.ccs-labs.org/~bloessl/


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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:

Paul----Thank you very much for your suggestion and sharing!
https://github.com/bastibl/gr-ieee802-11/issues/18#issuecomment-130651522
logging in
Hi Paul,

        this
        <mailto:[email protected]>> wrote:
                 or, via email, send a message with subject or body
            <mailto:[email protected]>>
                        (Tian Alvin)


http://www.ccs-labs.org/~bloessl/


Dipl.-Inform. Bastian B.
Distributed Embedded Systems
University of Paderborn, Germany
http://www.ccs-labs.org/~bloessl/

Hi Bastian,

Thanks!

The file ( ofdm_decode_signal.cc) I have downloaded is still written as
(Yes–no mylog(temp) now):

“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?

On Thu, Aug 13, 2015 at 3:07 PM, Bastian B. [email protected]

Okay. I see. Thank you very much for your help!

On Thu, Aug 13, 2015 at 3:34 PM, Bastian B. [email protected]

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

yes, this is how it is supposed to look. But please read the posts
    I followed the suggestion on github:
    % d_encoding % d_len % d_copy_symbols);"

         It would be great if you could try what I suggest there.
             logging in
    <mailto:[email protected]> <mailto:[email protected]
                 Did you also see the below error in your case when
                 <[email protected] <mailto:[email protected]>
                      solves the problem. For reference, see [1].
                      <mailto:[email protected]
    <mailto:[email protected]>
    [email protected]
    <mailto:[email protected]>
                          than "Re: Contents of Discuss-gnuradio

    https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
    <mailto:[email protected]>>>

Dipl.-Inform. Bastian B.
Distributed Embedded Systems
University of Paderborn, Germany
http://www.ccs-labs.org/~bloessl/


Dipl.-Inform. Bastian B.
Distributed Embedded Systems
University of Paderborn, Germany
http://www.ccs-labs.org/~bloessl/

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