-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Tarun Tiwari wrote: > Hi, > > I was wondering if we can add the packet number using current packet_utils > python class. > > When I look into the code, I see that we introduce the preamble, access > code, length of the packet, payoad with crc, and padding for usrp using > make_packet function. At the same time when I look into the pkt.py , I see > that msg.to_string() is the whitened_payload_with_crc and msg.arg1() is the > whitener_offset for unmake_packet function in packet_utils class. > > Now, I understand that the preamble and access codes are removed by the > timing and frequncy sync blocks in the receiver (please correct me if I am > wrong), but I could not understand where the packet length, attached with > the transmitted packet, went or if it was present, how do I get that?
A better way to put it is that the preamble is ignored altogether and the access code is detected by the framer_sink, which then pulls off the length field. > Well, if I add the packet sequence number in the transmitted packet, how > can > i recover the sequence number? is it possible with current packet_utils > python class or I need to write a new class for the same? Why don't you just put the sequence number as part of the body of the message and then you don't have to touch packet_utils? - -Dan -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFGdDd1y9GYuuMoUJ4RAlR1AJwNcK5H5C5LckVfG7q8T3oi3dVG2QCggBf0 t94tNgy9vErHj0oB3zKK3L8= =BHHj -----END PGP SIGNATURE----- _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
