I’m curious to know if there is somebody in the list developing for E310 using 
current SDK.
This is a problem that, obviously, everybody wants execute custom module could 
incur.
Any ideas?

Ivan

> Il giorno 17 feb 2020, alle ore 17:31, kron...@tiscali.it ha scritto:
> 
> 
> Dear all,
> finally I cross-compiled my OOT module for running on USRP E310.
> Based on the instructions at 
> "https://kb.ettus.com/Software_Development_on_the_E3xx_USRP_-_Building_RFNoC_UHD_/_GNU_Radio_/_gr-ettus_from_Source";,
>  I set the environment variable PYTHONPATH a little bit different, to point 
> the path of the installed OOT module:
> 
> export PYTHONPATH=$LOCALPREFIX/lib/python3.5/dist-packages:$PYTHONPATH
> 
> Such a way, on the target I can load my custom module in python.
> root@ni-e31x-316AFEA:~# python3 -c "import custom_mod"
> I created a flowgraph that use my OOT module, and I discovered in the newer 
> file system for E310 python3 has not all of the needed libraries.
> root@ni-e31x-316AFEA:~# ./top_block.py
> Traceback (most recent call last):
>   File "./top_block.py", line 12, in <module>
>     from gnuradio import blocks
>   File 
> "/home/root/localinstall/usr/lib/python3.5/dist-packages/gnuradio/blocks/__init__.py",
>  line 38, in <module>
>     from .stream_to_vector_decimator import *
>   File 
> "/home/root/localinstall/usr/lib/python3.5/dist-packages/gnuradio/blocks/stream_to_vector_decimator.py",
>  line 23, in <module>
>     from gnuradio import gr
>   File 
> "/home/root/localinstall/usr/lib/python3.5/dist-packages/gnuradio/gr/__init__.py",
>  line 46, in <module>
>     from .top_block import *
>   File 
> "/home/root/localinstall/usr/lib/python3.5/dist-packages/gnuradio/gr/top_block.py",
>  line 32, in <module>
>     from .hier_block2 import hier_block2
>   File 
> "/home/root/localinstall/usr/lib/python3.5/dist-packages/gnuradio/gr/hier_block2.py",
>  line 26, in <module>
>     import pmt
>   File 
> "/home/root/localinstall/usr/lib/python3.5/dist-packages/pmt/__init__.py", 
> line 61, in <module>
>     from .pmt_to_python import pmt_to_python as to_python
>   File 
> "/home/root/localinstall/usr/lib/python3.5/dist-packages/pmt/pmt_to_python.py",
>  line 23, in <module>
>     import numpy
> ImportError: No module named 'numpy'
> How could I solve the problem?
> I'm so close to run my OOT modules on the target...
> Thanks so much.
> Ivan
> 
> 
> 
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