Hello, I am writing a program in Python to interface with a simple file source to USRP sink flowgraph.
I have a short IQ file that I simply want to play once without repeating, and I want the calling Python code to "know" when it's completed after commanding the GR class instance to start via a call to tb.start(), if tb is the class instance variable. I came across the C++ GR API here: https://www.gnuradio.org/doc/doxygen/classgr_1_1block.html#a89242cb1ac9d2bf5e75f923745baa576 ^ That shows there's a gr.finished() boolean return that tells you when the flowgraph is done, but evidently .finished is not an attribute of tb. The only methods that worked for me are tb.start/tb.run, tb.wait, tb.stop. I'd also be happy with polling the GR class instance for the noutput_items from the work function of the USRP_sink block. I know the file size so I can have a while loop with the noutput_items value as a condition, but how do I do that in Python? I think I am getting close with these 2 results from Google but still not getting it: 1) https://stackoverflow.com/questions/50938245/gnuradio-number-of-output-items/50943105 2) https://stackoverflow.com/questions/32305813/gnuradio-how-to-change-the-noutput-items-dynamically-when-writing-oot-block Thanks, Andrew
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