Hi Ekko, as Michael said, if you need arbitrary lengths of data to be complete, that would be at least one layer up the network layer model; you'll need to ensure your data fits into packets perfectly.
Best regards, Marcus On 06.01.2016 19:26, Michael Berman wrote: > > Ekko, > > > > It has been a while since I have dealt with this kind of issue with > the digital coms, but I have run into this. The problem I found was > that there was not enough data in the file to feed the packetizer > properly. There are probably several work arounds for this, but the > simplest would be to pad the data up to the exact amount the > packetizer needs to generate the packets and send them along. You can > check if this is the case by varying the size of your file. If you > change the number of bytes in the file, you should see the amount left > out varying; if you add bytes slowly you should see a breakover point > near a multiple of the number of bits the packetizer needs that will > create a small or no amount of data not transmitted. > > > > Michael > > > > *From:*[email protected] > [mailto:[email protected]] *On > Behalf Of *Ekko > *Sent:* Wednesday, January 06, 2016 9:01 AM > *To:* [email protected] > *Subject:* [Discuss-gnuradio] how to send a complete file > > > > hello > > > > I'm using gnuradio to simulation the gmsk tx/rx with a file > > this is my grc > > > > you can see ,i am using a file_sink and file_source, > > the file_source is set to not repeat,i want to send this file ony one > time. > > > > and my source file‘s size is 140KB > > > > after i run this grc (i am sure the send is stop ) > > > > i check the dest file,the size of whitch is 139.3KB > > > > then i compare two file > > just like > > > > > we can see that some data is lost(exactly 22 lines)， > > so i want to know how can i send a complete file, just i send > 140KB,and recieved 140KB, > > then stop. > > > > > > thank you > > > > -Ekko > > > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
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