Re: [Discuss-gnuradio] 802.15.4 packet receive using transceiver_OQPSK.grc

[Bastian Bloessl]

Hi Jaeho,

I’m not sure whether I understand you correctly since, actually, the same flow 
graph can be used to send and receive.

Maybe start with a loopback experiment first. When you checkout the project, 
the output of the phy is fed back to it’s input. This flow graph can be run 
without any hardware and hopefully helps to understand the packt flow.

I guess the packets are there but you just don’t see them. Either use Wireshark 
to dump the packets (see the transceiver.sh script in the apps folder to 
understand how to start this), or use a ‘debug message’ block to dump the 
packet content, or feed the packets to a UDP sink and connect via netcat (nc -u 
localhost 52001).

Best,
Bastian


> On 11 Oct 2015, at 23:33, Jaeho <address@hidden> wrote:
> 
> hello, i am Jaeho.
> 
> I am using two USRP X300(one is for transmitter and the other is for
> receiver), 
> Linux Ubuntu 15.04, gnuradio version 3.7.8,
> ieee_802_15_4(https://github.com/bastibl/gr-ieee802-15-4).
> 
> And I find a method to transmit packet by broadcasting with
> transceiver_OQPSK.grc.
> 
> As I know, transceiver means it could role as both transmitter and receiver.
> 
> But the problem is, I could not find how can I receive packet using this
> code.
> 
> If transmitter sends packets through broadcast, then receiver receives
> packets and check a message in received packets.
> 
> This is my ideal scenario. 
> 
> Please teach me how can I receive packets using transceiver_OQPSK.grc.
> 
> OR if there are other methods to receive 802.15.4 packets, then let me know.
> 
> Thank you.
> 
> 
> 
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--
Dipl.-Inform. Bastian Bloessl
Distributed Embedded Systems Group
University of Paderborn, Germany
http://www.ccs-labs.org/~bloessl/