I did a "reply all" which
      may be sending this to accounts where it shouldn't go.
      Please accept my apologies if that is so. 
    
    On 3/5/2019 1:27 AM, Müller, Marcus
      (CEL) wrote:
    
    
      
GNU Radio has tutorials on how to write your own blocks, both for
    
    I have found some of those.    But for some (stupid??) reason I
    linked in long after the introductory material in your links.  I
    will "start at the start" and see how that works. 
    
      
How you communicate with your "app" depends on what that is – is it a
separate process continously running, can it be a thread in another
process, or could one understand it as library?
    
    
    Mine will be a continuously running process.
    
      
Generally, GNU Radio was (is) meant to be used as library that you can
use from within your program; 
    
    I sort of had that feeling but I had not stumbled on the right links
    to tell me how to do that.  
    It looks like you have provided those links.
    One reason I came to this list is because I was having problems
    running GRC on my RPi.  I was concerned the RPi didn't have enough
    power for what I wanted so I was looking for a more direct way then
    going through GNURadio.
    
    With what you, Sam, and Dale provided I should be in good
    shape.....after I digest it.
    
    Thanks a bunch,
    Pete