Re: [Discuss-gnuradio] asking help about gr-ieee802.11

[Bastian Bloessl]

Hi Nur,

the actual error message is not shown in your output. I think you should run 
the flow graph in gdb with something like

gbd python
gdb-prompt> run /home/user/gr-ieee802-11/examples/wifi_loopback.py

once you hit the error 
gdb-prompt> bt

Best,
Bastian

> On 06 Jul 2015, at 05:17, Nur Jalaudin <address@hidden> wrote:
> 
> hi. I am newbie of gnuradio.i try run wifi_loopback.grc, all the port
> are connected.but when i run it comes out with this messege below:
> 
> 
> Generating: "/home/user/gr-ieee802-11/examples/wifi_loopback.py"
>>>> Warning: This flow graph may not have flow control: no audio or RF hardware
> blocks found. Add a Misc->Throttle block to your flow graph to avoid CPU
> congestion.
> 
> Executing: "/home/user/gr-ieee802-11/examples/wifi_loopback.py"
> 
> linux; GNU C++ version 4.8.2; Boost_105400;
> UHD_003.009.git-171-g51bc00ee
> 
> Using Volk machine: avx_64_mmx_orc
> OFDM MAPPER: encoding: 0
> set_min_output_buffer on block 31 to 96000
> set_min_output_buffer on block 33 to 96000
> set_min_output_buffer on block 35 to 96000
> set_min_output_buffer on block 36 to 96000
> set_min_output_buffer on block 39 to 96000
> set_min_output_buffer on block 50 to 96000
> 
>>>> Done (return code -11)
> 
> 
> below is my system info:
> address@hidden:~$ python -V
> Python 2.7.6
> address@hidden:~$ gnuradio-config-info -v
> 3.7.7.1
> address@hidden:~$ uname -a
> Linux userr-X455LDB 3.13.0-53-generic #89-Ubuntu SMP Wed May 20 10:34:39
> UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
> address@hidden:~$ gcc --version
> gcc (Ubuntu 4.8.2-19ubuntu1) 4.8.2
> Copyright (C) 2013 Free Software Foundation, Inc.
> This is free software; see the source for copying conditions.  There is
> NO
> warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR
> PURPOSE.
> 
> address@hidden:~$ cat /etc/lsb-release
> DISTRIB_ID=Ubuntu
> DISTRIB_RELEASE=14.04
> DISTRIB_CODENAME=trusty
> DISTRIB_DESCRIPTION="Ubuntu 14.04.2 LTS"
> 
> -- 
> Posted via http://www.ruby-forum.com/.
> 
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--
Dipl.-Inform. Bastian Bloessl
Distributed Embedded Systems Group
University of Paderborn, Germany
http://www.ccs-labs.org/~bloessl/