Right, I've played with MAVlink before and as said it is not a wireless standard, you can send it over hard link serial if you want. I'm assuming your are sending the MAVlink over a pair of serial-RF adapters as is usual.
http://copter.ardupilot.com/wiki/common-using-the-3dr-radio-for-telemetry-with-apm-and-px4/ Seems to be what most use ( I have a pair of these as well ). If you look at the technical section your can see they list FHSS GFSK as the modulation. I would look into the datasheet for the chip for more details. I would recommend just doing the RF demodulation in GNUradio and then send the packets to an external program for further processing. ~Andrew On Sat, Jun 28, 2014 at 8:06 AM, Andre Puschmann < andre.puschm...@tu-ilmenau.de> wrote: > Hey, > > I have the feeling that there maybe a misunderstanding about what > MAVlink really is. The MAVlink protocol as such is serialization library > that is used to transfer information, i.e. serialized data structures, > between mobile and stationary devices rather than a whole "communication > system". You can transfer MAVlink messages over any kind of transport > system such as Wifi, bluetooth, Zigbee or any proprietary system. > So what you probably want is to receive and decode the communication of > that transfer system, maybe using GR, and then decode the actual payload > with the MAVlink library. > > Cheers > Andre > > > > On 28.06.2014 08:07, Marcus Müller wrote: > > Hi! > > Of course it would be helpful if you had a capture device if your > > motivation was to capture signals of a system. Also, it will give you > > something to test your reception algorithms on. > > Greetings, > > Marcus > > > > On June 28, 2014 6:18:36 AM CEST, Paulo Roberto > > <bad_boy_...@hotmail.com> wrote: > > > > Hello Marcus, thanks for your answer. > > I have another question, if I have a sdr device like BladeRF or > > HackRF, I will capture the signals without the need of simulating. > > But I will need to decode received signals (what it's not a good > > task), am I correct? In other words, would help me to have the sdr > > device? > > > > Thank you so much. > > > > Paulo. > > > > > ------------------------------------------------------------------------ > > Date: Sat, 28 Jun 2014 02:52:58 +0200 > > From: marcus.muel...@ettus.com > > To: discuss-gnuradio@gnu.org > > Subject: Re: [Discuss-gnuradio] Simulation with MAVLink protocol > > > > Hi Paulo, > > > > GNU Radio gives you but the framework to write and connect signal > > processing blocks, as well as a nice set of "standard" blocks. > > Among the functionalities available there are means to generate > > packets and process the same. > > If you know that if you can capture the signal, you could > > mathematically/algorithmically analyze it, it's basically possible > > to implement this in GNU Radio. > > That being said, it's not really easy to implement a complete > > packeted standard in GNU Radio since that might be a "logically" > > complex task, involving different modulations, synchronization, > > collision detection, arbitration, resend requests and much more. > > However, there are several examples of people being able to decode > > received signals. I like to point gr-ieee802-11 (WLAN packets > > *transceiver*), and for a "simpler" system gr-air-modes (air traffic > > control message decoding). > > > > Greetings, > > Marcus > > On 27.06.2014 23:12, Paulo Roberto wrote: > > > > Hello, I have some needs and I'd like to know if GnuRadio can > help me with it. I have already read some material at GR website and I > didn't get the answer.I need to receive and send packets with a specific > protocol called MAVLink, used in mini UAVs. More specifically I am thinking > about developing a sniffer.I don't have sdr hardware for now, then for > starting I am thinking on simulation. My doubts are as follows: > > - Is it possible to implement a new protocol for sending and > receive packets? (MAVLink protocol) > > - My idea is to simulate the exchange between a UAV and a > control ground station. Would it possible to do it? > > Thanks in advance. > > > > > > > > _______________________________________________ > > Discuss-gnuradio mailing list > > Discuss-gnuradio@gnu.org <mailto:Discuss-gnuradio@gnu.org> > > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > > > > > > > _______________________________________________ Discuss-gnuradio > > mailing list Discuss-gnuradio@gnu.org > > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > > > > > -- > > Sent from my Android device with K-9 Mail. Please excuse my brevity. > > > > > > _______________________________________________ > > Discuss-gnuradio mailing list > > Discuss-gnuradio@gnu.org > > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > > > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >
_______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
