On Tue, Feb 26, 2008 at 12:02:31PM -0500, Kshitij Kumar Singh wrote: > > > > I think you are misunderstanding how gr.message_sink works. Since > > it's possible to set the item size small (e.g., gr.sizeof_float), it > > returns as many samples as it can in a message. It does however > > provide you information about what it did in the arg1 and arg2 field. > > > > // build a message to hold whatever we've got > > gr_message_sptr msg = gr_make_message(0, // msg type > > d_itemsize, // arg1 for other end > > noutput_items, // arg2 for other end > > (redundant) > > noutput_items * d_itemsize); // len > > of msg > > > > Eric > Eric, thanks for the reply and for clearing up the confusion. I now > understand how this works. Sorry if I did not phrase my question > correctly earlier: I want to transmit a file using packets repeatedly, > i.e. the first packet transmits the entire contents of file(as a string, > size <= 4096), the second packet again transmits the entire file and so > on. I thought that the best place to start was tx_voice.py since all I > needed to do was replace the audio_rx class with my own which got the > data from a file. The program ran perfectly without glitches but after > the sending the first packet, I was unable to loop around for a second > time (Still can't figure it out). So I decided to start from scratch and > got confused with the message stuff. > > Thanks for your patience. > > Regards, > Kshitij
Take a look at the code in gnuradio-examples/python/digital. See especially benchmark_tx.py, benchmark_rx.py and tunnel.py Eric _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
