Dear All, I have just received a B210 and want to implement a demodulator on the FPGA. I am using GNU RADIO. I can get the IQ data using the USRP source block. Is there a way to get the demodulated data in GNU RADIO? Thank you in advance.

Dear Mehtap, The FPGA part of this process is completely independent of GNURadio. In order to modify the FPGA code, you need a full ISE license from Xilinx. Depending on how many features you plan to introduce in the FPGA, you have to take into account the utilization that it would require (for what we provide a "free-space" estimate here <https://kb.ettus.com/B200/B210/B200mini/B205mini#FPGA>). After you manage to get the demodulated samples from the FPGA (and what continues here depends on the type of samples that you are planning to send from the device into the host machine), you might have to tweak UHD as well in order to play nicely with the samples you are providing - if they are IQ samples (that represent the demodulated signals), it is probable that they go transparently into GNURadio via the USRP source block. Up to here, GNU Radio plays no role. Thereafter you can use GNU Radio for further signal processing. Regards, - Nicolas PS: just in case you were wondering, the B210 does not support RFNoC. On Thu, Dec 21, 2017 at 2:26 PM, mehtap özkan via USRP-users < usrp-users@lists.ettus.com> wrote: > Dear All, > I have just received a B210 and want to implement a demodulator on the > FPGA. I am using GNU RADIO. I can get the IQ data using the USRP source > block. Is there a way to get the demodulated data in GNU RADIO? > Thank you in advance. > > _______________________________________________ > USRP-users mailing list > USRP-users@lists.ettus.com > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com > >

Thats what i feared, modifying the UHD. Is there a way to get the demodulated samples except the USRP source block? 2017-12-22 17:04 GMT+03:00 Nicolas Cuervo <nicolas.cuervo@ettus.com>: > Dear Mehtap, > > The FPGA part of this process is completely independent of GNURadio. In > order to modify the FPGA code, you need a full ISE license from Xilinx. > Depending on how many features you plan to introduce in the FPGA, you have > to take into account the utilization that it would require (for what we > provide a "free-space" estimate here > <https://kb.ettus.com/B200/B210/B200mini/B205mini#FPGA>). After you > manage to get the demodulated samples from the FPGA (and what continues > here depends on the type of samples that you are planning to send from the > device into the host machine), you might have to tweak UHD as well in order > to play nicely with the samples you are providing - if they are IQ samples > (that represent the demodulated signals), it is probable that they go > transparently into GNURadio via the USRP source block. Up to here, GNU > Radio plays no role. Thereafter you can use GNU Radio for further signal > processing. > > Regards, > - Nicolas > > PS: just in case you were wondering, the B210 does not support RFNoC. > > On Thu, Dec 21, 2017 at 2:26 PM, mehtap özkan via USRP-users < > usrp-users@lists.ettus.com> wrote: > >> Dear All, >> I have just received a B210 and want to implement a demodulator on the >> FPGA. I am using GNU RADIO. I can get the IQ data using the USRP source >> block. Is there a way to get the demodulated data in GNU RADIO? >> Thank you in advance. >> >> _______________________________________________ >> USRP-users mailing list >> USRP-users@lists.ettus.com >> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >> >> >

Hi Mehtap, you don't specifically need GNU Radio in order to get data from the USRP, as you can set up a receiver using the UHD API. We provide examples of how to do this, such as the rx_samples_to_file <https://github.com/EttusResearch/uhd/blob/maint/host/examples/rx_samples_to_file.cpp>, that sets the receiver streamers and saves them in a file. Notice that UHD doesn't really know that the samples are demodulated or not (or anything about the samples), but it is only set to pass to the host IQ samples from the B210. If you set the demodulator in FPGA to pass samples with the same structure, it is possible that modifications in the host part of UHD are not necessary. Our manual includes a quick read about device streaming <https://files.ettus.com/manual/page_stream.html> that might be interesting for you. -N On Fri, Dec 22, 2017 at 10:06 AM, mehtap özkan <kurtulmehtap@gmail.com> wrote: > Thats what i feared, modifying the UHD. Is there a way to get the > demodulated samples except the USRP source block? > > 2017-12-22 17:04 GMT+03:00 Nicolas Cuervo <nicolas.cuervo@ettus.com>: > >> Dear Mehtap, >> >> The FPGA part of this process is completely independent of GNURadio. In >> order to modify the FPGA code, you need a full ISE license from Xilinx. >> Depending on how many features you plan to introduce in the FPGA, you have >> to take into account the utilization that it would require (for what we >> provide a "free-space" estimate here >> <https://kb.ettus.com/B200/B210/B200mini/B205mini#FPGA>). After you >> manage to get the demodulated samples from the FPGA (and what continues >> here depends on the type of samples that you are planning to send from the >> device into the host machine), you might have to tweak UHD as well in order >> to play nicely with the samples you are providing - if they are IQ samples >> (that represent the demodulated signals), it is probable that they go >> transparently into GNURadio via the USRP source block. Up to here, GNU >> Radio plays no role. Thereafter you can use GNU Radio for further signal >> processing. >> >> Regards, >> - Nicolas >> >> PS: just in case you were wondering, the B210 does not support RFNoC. >> >> On Thu, Dec 21, 2017 at 2:26 PM, mehtap özkan via USRP-users < >> usrp-users@lists.ettus.com> wrote: >> >>> Dear All, >>> I have just received a B210 and want to implement a demodulator on the >>> FPGA. I am using GNU RADIO. I can get the IQ data using the USRP source >>> block. Is there a way to get the demodulated data in GNU RADIO? >>> Thank you in advance. >>> >>> _______________________________________________ >>> USRP-users mailing list >>> USRP-users@lists.ettus.com >>> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >>> >>> >> >