Here is your graph with a slight modification of your graph to show what happens if you have the CAR populated.
On Sun, Mar 5, 2017 at 12:20 PM, Dave NotTelling <dmp250...@gmail.com> wrote: > You don't see any output from the Tag Debug block because it only shows > the tags, not the data. You actually don't have any tags in your data. > You just have a PMT object with a NIL CAR and a populated CDR. Since there > are no elements in the CAR, you get no tags. I personally got confused > because I thought that if I passed in a valid CAR/CDR combo to the pmt > generator then it would just overwrite the CDR portion. Not so, it > actually ignores whatever data comes in. Check out > http://gnuradio.org/doc/doxygen/page_pmt.html for more info about PMT > objects. > > On Sun, Mar 5, 2017 at 8:33 AM, Jorge Carpio <carpio...@gmail.com> wrote: > >> Hi all, >> >> I'm pretty new to GNU Radio, I followed the tutorials and made some >> simple flowgraphs to use with an USRP. Recently took a look at the >> gr-digital packet communication examples. >> >> I'm having trouble figuring out the right way to use the PDU to Tagged >> Stream block. I connected a Random PDU Generator to the input of the block, >> expecting a tagged stream to be produced at the output. But I must have >> misunderstood something, because there is no way I can see the samples >> being produced in the tagged stream of bytes. I can only see the length >> tags in the output stream, but no trace of the PDU data. Not even when I >> try to write the stream to a file or to stdout. >> >> >> Attached is the flowgraph I'm using. >> >> Cheers, >> Jorge >> >> >> >> >> _______________________________________________ >> Discuss-gnuradio mailing list >> Discuss-gnuradio@gnu.org >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> >> >
pdu2tagstream_modified.grc
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