Thanks Mark, yes I have been pondering those approaches. Another option is a small C++ GUI (if such as thing is possible) - to make it all one application. There is some attraction to using C on small platforms rather than C and Python.
Also considering splitting the GUI and FSK Rx across a network using sockets. A typical use case will be connecting to the Pi from a more powerful host machine to debug the radio IP link, then leaving the Pi to run headless. In this case rtl_fsk could send debug info to a UDP or TCP port, and we could use a JSON or similar approach to move the data over the socket as you mentioned below. That would keep it quite "light" on the embedded/rtl_fsk side of the system. - David On 10/7/20 5:56 pm, Mark Jessop wrote: > We kind of solved this problem in the Wenet project: > https://github.com/drowe67/codec2/blob/master/octave/fskdemodgui.py > > It needs the FSK stats output in JSON format, like what fsk_demod and > horus_demod produce. > # Call using: > # <producer>| ./fsk_demod --cu8 -s --stats=100 2 $SDR_RATE $BAUD_RATE - > - 2> >(python fskdemodgui.py --wide) | <consumer> > > It'll show frequency estimators, FFT output, Eb/N0 estimates, all live. > > I'm doing similar in a much cleaner manner within a new project > here: > https://github.com/projecthorus/horus-gui/blob/master/doc/horusgui_screenshot.png > However i'm doing the audio FFTs myself, as I wanted a bit more > customization in the update rates and resolution. I am overlaying the > frequency estimator data, which provides a really nice feedback on what > the modem is doing. > > 73 > Mark VK5QI > > On Fri, Jul 10, 2020 at 12:04 PM David Rowe <da...@rowetel.com > <mailto:da...@rowetel.com>> wrote: > > I've now developed an integrated Rx/fsk demod application, so on the Rx > side you can do something like: > > rtl_fsk -g 1 -f 144490000 - | fsk_put_test_bits - > > However I feel I'm flying blind without some sort of GUI to monitor the > received signal. Something similar to previous Python scripts > should do. > > Jereon - now that I'm linking with libcodec2 it's not far off being able > to use your VHF packet system with TAP as well at Tomas' TUN design. > > It's also not far off being a FreeDV receiver, we could pipe the decoded > audio to the Pis sound card. A transceiver could be implemented too, > using rpitx. > > Cheers, > David > > On 9/7/20 7:03 pm, Tomas Härdin wrote: > > Hi > > > > Cool, I'll have to take a closer look at this. > > > > What I suspect may get tricky is the higher-level protocol stuff. It's > > possible to just use straight-up Ethernet and frequency > multiplexing to > > avoid some of the problems that WiFi solves. At lower baudrates some > > thought has to be put into header compression I think. > > > > I'm busy with uni things at the moment, hopefully more time should > free > > up for this in the coming month or so. > > > > /Tomas > > > > tor 2020-07-09 klockan 18:40 +0930 skrev David Rowe: > >> Further to this I have created a new repo, added instructions, and > >> started integrating the various command line applications together: > >> > >> https://github.com/drowe67/pirip > >> > >> Next step is to link rtl_sdr and the fsk demodulator into one > >> application. > >> > >> - David > >> > >> On 22/6/20 7:39 am, David Rowe wrote: > >>> Some good progress on support for VHF/UHF data using Codec 2 > >>> modems: > >>> > >>> http://www.rowetel.com/?p=7207 > >>> > >>> - David > >>> > >> > >> _______________________________________________ > >> Freetel-codec2 mailing list > >> Freetel-codec2@lists.sourceforge.net > <mailto:Freetel-codec2@lists.sourceforge.net> > >> https://lists.sourceforge.net/lists/listinfo/freetel-codec2 > > > > > > > > _______________________________________________ > > Freetel-codec2 mailing list > > Freetel-codec2@lists.sourceforge.net > <mailto:Freetel-codec2@lists.sourceforge.net> > > https://lists.sourceforge.net/lists/listinfo/freetel-codec2 > > > > > _______________________________________________ > Freetel-codec2 mailing list > Freetel-codec2@lists.sourceforge.net > <mailto:Freetel-codec2@lists.sourceforge.net> > https://lists.sourceforge.net/lists/listinfo/freetel-codec2 > > > > _______________________________________________ > Freetel-codec2 mailing list > Freetel-codec2@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/freetel-codec2 > _______________________________________________ Freetel-codec2 mailing list Freetel-codec2@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freetel-codec2
