Re: [Discuss-gnuradio] Tutorial issue: AttributeError: 'module' object has no attribute 'square2_ff'

[Martin Braun]

Lefteris,

I would recommend you follow the Guided Tutorials, instead of this page.
The content should be mostly the same, the latter hasn't been updated
lately, though.

In your installation, the block isn't properly swigged. This is a
standard procedure, so I recommend you start from scratch, use modtool,
and follow the guided tutorials. Most likely it's a build artefact or
something like that.

Cheers,
M

On 03/02/2016 12:23 PM, Lefteris Kampianakis wrote:
> Hello,
> 
> I am experiencing problems with the tutorial on OOT development. I am
> trying to implement the basic square_ff that is described here:
> 
> https://gnuradio.org/redmine/projects/gnuradio/wiki/OutOfTreeModules
> 
> and I get the following error:
> 
>   File "MYPATHTOMODULE/Gnuradio/top_block.py", line 263, in <module>
>     main()
>   File "MYPATHTOMODULE/Gnuradio/top_block.py", line 251, in main
>     tb = top_block_cls()
>   File "MYPATHTOMODULE/Gnuradio/top_block.py", line 117, in __init__
>     self.howto_square2_ff_0 = howto.square2_ff()
> AttributeError: 'module' object has no attribute 'square2_ff'
> 
> where "MYPATHTOMODULE" is where I have saved the files.
> 
> I have followed the instructions very carefully and the module appears
> in GRC but the error is still there.
> 
> I have recently seen the same issue in these threads:
> 
> https://lists.gnu.org/archive/html/discuss-gnuradio/2015-02/msg00156.html
> https://lists.gnu.org/archive/html/discuss-gnuradio/2015-02/msg00130.html
> https://lists.gnu.org/archive/html/discuss-gnuradio/2015-08/msg00364.html
> 
> But in all cases people seem to have done something more other than just
> the tutorial. 
> 
> Here's a link to my files:
> https://www.dropbox.com/sh/phd3mzi6lwrh9vl/AAASUHh8Tj6PxrLEb78zYMTRa?dl=0
> 
> I installed gnuradio using the build-gnuradio script after I fixed the
>  libzmq-dev typo.
> 
> * ldd libgnuradio-howto.so *gives the following output:
> linux-vdso.so.1 =>  (0x00007ffd821b1000)
> libboost_system.so.1.54.0 =>
> /usr/lib/x86_64-linux-gnu/libboost_system.so.1.54.0 (0x00007f3a0fcde000)
> libgnuradio-runtime-3.7.9.1.so.0.0.0 =>
> /usr/local/lib/libgnuradio-runtime-3.7.9.1.so.0.0.0 (0x00007f3a0fa0f000)
> libgnuradio-pmt-3.7.9.1.so.0.0.0 =>
> /usr/local/lib/libgnuradio-pmt-3.7.9.1.so.0.0.0 (0x00007f3a0f7c7000)
> libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6
> (0x00007f3a0f4c3000)
> libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f3a0f2ad000)
> libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f3a0eee8000)
> libvolk.so.1.2.1 => /usr/local/lib/libvolk.so.1.2.1 (0x00007f3a0eb2a000)
> libboost_filesystem.so.1.54.0 =>
> /usr/lib/x86_64-linux-gnu/libboost_filesystem.so.1.54.0 (0x00007f3a0e914000)
> libboost_thread.so.1.54.0 =>
> /usr/lib/x86_64-linux-gnu/libboost_thread.so.1.54.0 (0x00007f3a0e6fe000)
> libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0
> (0x00007f3a0e4e0000)
> librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f3a0e2d8000)
> libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f3a0dfd2000)
> /lib64/ld-linux-x86-64.so.2 (0x00007f3a100ed000)
> liborc-0.4.so.0 => /usr/lib/x86_64-linux-gnu/liborc-0.4.so.0
> (0x00007f3a0dd50000)
> 
> 
> The problem appeared after I upgraded from ubuntu 12.04 to ubuntu 14.04
> if that helps.
> uname -a gives:
> 3.13.0-79-generic #123-Ubuntu SMP Fri Feb 19 14:27:58 UTC 2016 x86_64
> x86_64 x86_64 GNU/Linux
> 
> I had a module that acted as a very simple detector for my receiver that
> converted a complex number to a binary value (byte output) that worked
> fine before the upgrade that I have developed with the same method as
> the tutorial. Now of course it doesn't work. 
> 
> I wouldn't send a message if I hadn't spend 3 days on this but now I am
> really stuck. Please advise.
> 
> 
> Thank you
> Lefteris
> 
> 
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