I'm using GnuRadio on Ubuntu mainly. I may not have a chance to try it out until the summer, though. On a somewhat related note, something that I also want to tackle when I have some time is a julia interface to the UHD, so that we can control the radios directly from Julia.
-- mb On Mon, Apr 20, 2015 at 11:37 AM, Jay Kickliter <jay.kickli...@gmail.com> wrote: > Thanks. What OS are you using, and how did you install Julia/GNU Radio? > I'll attempt to fix any major problems before you try it out. > > On Monday, April 20, 2015 at 9:33:18 AM UTC-6, Miguel Bazdresch wrote: >> >> This is great, and something I wanted to do but hadn't had time for. I'll >> give it a try when I have a chance. >> >> On Mon, Apr 20, 2015 at 10:22 AM, Jay Kickliter <jay.ki...@gmail.com> >> wrote: >> >>> I just pushed a rough draft gr-juliaffi >>> <https://github.com/JayKickliter/gr-juliaffi> to GitHub. It is not a >>> Julia package, but a GNU Radio module (C++/Python) that calls your Julia >>> code to do the actual signal processing. >>> >>> If you're not familiar with GNU Radio, it is a software defined radio >>> (SDR) framework. SDR is really cool. Traditional radio hardware is >>> dedicated to certain kind of signal (like a satellite modem or FM >>> receiver). SDR lets you use generic hardware that does little more than >>> digitize the raw radio waves and send them to a computer. From there, all >>> the signal processing is performed in software. There are real world >>> applications >>> <http://www.fsf.org/blogs/community/free-software-in-space-gnu-radio-and-the-isee-3-spacecraft> >>> of SDR. I use it almost every day. >>> >>> The motivation for this block came recently when I needed something GNU >>> Radio didn't have yet. At my job, we're developing new 802.15.4 hardware. >>> There is an 802.15.4 <https://github.com/bastibl/gr-ieee802-15-4.git> >>> out-of-tree module for GNU Radio, but it's not complete and doesn't have >>> the capability of de-spreading >>> <http://en.wikipedia.org/wiki/Direct-sequence_spread_spectrum> 802.15.4 900 >>> MHz BPSK signals. I wrote code to de-spread the signal in Julia, and piped >>> from/to GNU Radio using ZeroMQ. That works fine, but it's cumbersome. Why >>> not just have GNU Radio call the Julia code directly? >>> >>> If you do want to use the module, please let me know what issues you run >>> into when building/using it. I spent two solid days just trying to get >>> cmake to find and properly set up linking to libjulia. I'm using OS X, and >>> @rpath was causing the biggest problem for me. It only built when I finally >>> stopped trying to tell cmake where to find libjulia and switched to >>> find_library. Also I had to do an actual `make install release` in the >>> Julia repo for all the headers and libraries to be in predictable >>> locations. That's because the FindJulia cmake module I added calls julia >>> on the command line to figure out where stuff is. The code still crashes if >>> I try to run it with `jl_init(NULL) >>> <https://github.com/JayKickliter/gr-juliaffi/blob/master/lib/juliablock_ff_impl.cc#L47> >>> '. >>> >>> There's still more c++ work to be done, and I don't know c++. I just >>> infinite monkey it 'till it works. I just hope I or someone else can figure >>> out how to make the c++ configure itself dynamically, so it isn't necessary >>> to define blocks for every combo of input/output type. Most of the repo was >>> automatically created with gr_modtool. This file >>> <https://github.com/JayKickliter/gr-juliaffi/blob/master/lib/juliablock_ff_impl.cc> >>> is pretty much the whole project. It's definitely possible to change the >>> number of inputs/outputs to block at runtime. Looking at the code, I think >>> it may be possible to change the type as well. >>> >>> I was hoping have this done with some good examples in time to give a >>> JuliaCon talk. Maybe next year. I'll be there anyway, if anyone's >>> interested I'll give an informal demo. >>> >> >>
