I'm trying to create a block that accepts messages and prints them out.
I created a block that extends gr_block and it has no stream ports: I'm
using gr_io_signature(0,0,0) for input and output. I am following the
guidance of this page:
http://gnuradio.org/doc/doxygen/page_msg_passing.html
From a test Python script I instantiate a top_block /tb/ and then
connect my stream-port-less block with tb.connect(block_instance). I
follow the lead of the page above to post a message, but the bound
handler function never gets called (I inserted a line to print "I'm
here!!" to stdout when the function gets called).
Am I having issues because my block doesn't have any stream inputs or
outputs?
Thanks,
Sean
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