Re: [Discuss-gnuradio] How to create a python block

[Martin Braun]

GNU Radio supports Python blocks out-of-the-box. You can use gr_modtool
to create them, if you like. Also check out our qa codes for some
examples (including message based blocks).

Cheers,
M

On 03/16/2016 01:51 PM, Dennis Glatting wrote:
> This is probably a dumb question but someone has to ask them...
> 
> 
> I have a run graph with c++ blocks: a receiver block, a transmitter
> block, and a manipulator block. I want to have the manipulator block
> editable from the run graph where the user can insert python code.
> Specifically:
> 
> 1) The block has two message ports: an "in" port and an "out" port.
> 
> 2) A user can write and type python code into the block to manipulate
> the message received on the input port and post the manipulated message
> on the output port.
> 
> 3) The python code may have to call other functions, such as updating a
> hash code.
> 
> How might I do that? I could do a c++ wrap around exec() but I believe
> there has to be an easier way since GNURadio is a combination of python
> and c++.
> 
> The incoming messages arrive at a low frequency and a low data rate so
> I'm not really concerned about processing time.
> 
> 
> 
> 
>  
> 
> 
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