On 21 September 2016 at 09:28, Pablo Leyva Camacho <plc.tel...@gmail.com> wrote: > Hi everyone! > > I have a couple of questions regarding the developing an osmosdr source/sink > driver. > > Today I have found that a couple of years ago, in the company I am working, > some of my coworkers developed a FPGA based SDR platform for a private > client. I have asked for the specifications and they are quite impressive; > center frequency tunable from to 0-6GHz, 250Msps (I&Q), full-duplex… There > are a few boards still lying around in the office and I would like to > integrate them in gnuradio as a personal project. I am pretty sure that is > going to be hard, but I will learn a lot in the process and it will be a > great personal satisfaction. > > I am an FPGA guy (I develop DSP IP cores for FPGA) but I have already > developed kernel drivers for Linux to interconnect our software layer with > our processing chains in the FPGAs. But all of them were quite tailored for > our requirements in each protect, so I have always defined my own interfaces > and never work with interfaces defined by others. > > I am having a look at https://github.com/osmocom/gr-osmosdr to have a > general idea about how other SDR platforms have implemented this interface, > but I would like to know if you have some recommendations about where to > start o how to guide the proyect. > > The platform itself is a ZYNQ FPGA with an embedded linux running in the ARM > processor. In the old project all the processing and interfacing with the > DAC, ADC, PLLs, VGAs, was implemented on the FPGA and the Linux system was > handling some control and connectivity stuff over Ethernet. > > Instead of connecting the board directly to the USB of a computer (the > platform has only usb 2.0 and avoiding all the usb driver stuff would be > great) I was thinking about running gnuradio in the zynq system with a > really simple flowgraph; Source/sink drivers, TCP conection and xmlrpc block > to control all the parameters. Doing all the “real” processing in my host > computer and sending to the board the processed data via Ethernet. > > Every comment, suggestion, reference, guide or critic is more than welcome! > I would like to hear your opinions and if you have any question feel free to > ask!
This platform is quite popular for industrial projects. I have myself a project in the pipe to do SDR on such platform. Hopefully i'll be starting early next year. http://gnuradio.org/redmine/projects/gnuradio/wiki/Zynq might be a good starting point. The wiki says it's out of date, but apparently you can control a GR block running in the FPGA. Maybe it would be nice to update this wiki page with your latest recipe. Chris > > Thanks for your time and greetings from Munich !!! > > Pablo. > > > _______________________________________________ > 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
