Re: Error in gnu radio documentation

[Cinaed Simson]

Hi - it worked correctly for me using

  gnuradio-config-info -v
  v3.8.5.0-6-g57bd109d

-- Cinaed

On 1/15/23 03:04, SHAKTHIVEL S 2021 Batch,PES University wrote:
> I used the same grc file given in the gnu radio packet communication 
> documentation.
> I got the following error while running the transmit file.
> Generating: 
> '/media/shakthivel/Workspace/capstone/SatelliteSDR/pkt_xmt_gr38.py'
>
> Executing: /usr/bin/python3 -u 
> /media/shakthivel/Workspace/capstone/SatelliteSDR/pkt_xmt_gr38.py
>
> handler caught exception:
> Traceback (most recent call last):
>   File "/usr/lib/python3/dist-packages/gnuradio/gr/gateway.py", line 
> 78, in eval
>     try: self._callback(arg)
>   File 
> "/media/shakthivel/Workspace/capstone/SatelliteSDR/packet_format_gr38.py", 
> line 22, in handle_msg
>     inMsg = pmt.to_python (msg)
>   File "/usr/lib/python3/dist-packages/pmt/pmt_to_python.py", line 
> 126, in pmt_to_python
>     return to_python(p)
>   File "/usr/lib/python3/dist-packages/pmt/pmt_to_python.py", line 57, 
> in pmt_to_dict
>     for i in range(pmt.length(items)):
>   File "/usr/lib/python3/dist-packages/pmt/pmt_swig.py", line 2647, in 
> length
>     return _pmt_swig.length(v)
> RuntimeError
> thread[thread-per-block[12]: <block Packet Format GR38(3)>]: SWIG 
> director method error. Error detected when calling 'feval_p.eval'
>
> Link to the 
> site:https://wiki.gnuradio.org/index.php/Packet_Communications?ver1=3.8
>
> Link to grc: https://wiki.gnuradio.org/images/3/37/Pkt_xmt_gr38.grc