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rpp0 / gr-lora

GNU Radio blocks for receiving LoRa modulated radio messages using SDR
GNU General Public License v3.0
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gr-lora encoder branch installation issues on Ubuntu 20.04 #134

Closed ghost closed 3 years ago

ghost commented 3 years ago

Hello,

I am having some problem with the encoder branch. I guess I installed everything properly but when I tried to run the grc, I'm getting error regarding swig library. Please note that, I installed the master branch in the same linux distribution with swig4.0. Lora-Receiver with decoding working 100% without any problem. I want to test the transmitter now from the encoder branch

This is the error

Traceback (most recent call last): File "./lora_receive_realtime.py", line 34, in <module> import lora File "/usr/lib/python3/dist-packages/lora/__init__.py", line 28, in <module> from .lora_swig import * File "/usr/lib/python3/dist-packages/lora/lora_swig.py", line 13, in <module> from . import _lora_swig **ImportError: /usr/lib/python3/dist-packages/lora/_lora_swig.so: undefined symbol: _ZN2gr4lora7encoder4makeEv**

And this is the grc flow after installing encoder branch, same as apps/lora_receive_realtime.grc replacing the hardware source only.

image

These are the commands for installation:

_git clone --branch encoder https://github.com/rpp0/gr-lora.git cd gr-lora/ mkdir build cd build cmake -DCMAKE_INSTALLPREFIX=/usr ../ make sudo make install sudo ldconfig

Swig Version: _$ swig -version SWIG Version 4.0.1 Compiled with g++ [x8664-pc-linux-gnu] Configured options: +pcre

Additionally, I tried with cmake ../ without any DCMAKE options. This time around, I got different error while running realtime.grc file

Traceback (most recent call last): File "./lora_receive_realtime.py", line 250, in <module> main() File "./lora_receive_realtime.py", line 228, in main tb = top_block_cls() File "./lora_receive_realtime.py", line 125, in __init__ self.lora_lora_receiver_0 = lora.lora_receiver(1e6, capture_freq, [target_freq], bw, sf, False, 4, True, False, False, decimation, False, False) **AttributeError: module 'lora' has no attribute 'lora_receiver'**

Am I missing some libraries in encoder branch compilation which are different than the master branch?

Any suggestions are welcome !

ghost commented 3 years ago

Older version of swig library was messing up during the installation process. Problem Solved after fresh ubuntu/gnuradio installation.