[USRP-users] Issues generating and loading bitstreams with RFNoC blocks (UHD-3.15.LTS)

Hi, I’m working on getting a solid workflow to build and use RFNoC blocks. I’m using branches UHD-3.15.LTS and GNU Radio’s maint-3.7 (also, packet gr-ettus from the master branch and uhd-fpga from the UHD-3.15.LTS branch). I’m using an E310 (SG1), with the SD image I get with ‘uhd_images_download

Re: [USRP-users] Issues generating and loading bitstreams with RFNoC blocks (UHD-3.15.LTS)

tch file. I received from Ettus a long time ago (Oct 2019?) > but it appears that it is still not fixed. > Rob > > On Tue, Jul 28, 2020 at 6:27 AM Jorge Arroyo Giganto via USRP-users < > usrp-users@lists.ettus.com> wrote: > >> Hi, >> >> >> I’m wo

Re: [USRP-users] Issues generating and loading bitstreams with RFNoC blocks (UHD-3.15.LTS)

but unfortunately I'm still getting the >> same errors when trying to use custom RFNoC blocks with >> uhd_image_builder.py. >> >> Any other help would be greatly appreciated, >> >> Jorge >> >> El mar., 28 jul. 2020 a las 15:56, Rob Kossler () >>

[USRP-users] Custom RFNoC block test with UHD C++ (UHD-3.15.LTS)

Hi, I am trying to test my RFNoC gain block, the one from the ‘Getting Started with RFNoC Development’ guide, through the UHD C++ API on an E310 (I'm using UHD-3.15.LTS, I know that UHD 4.0 has just been released but I would appreciate it if someone could help me with this version). I'm quite sur

[USRP-users] RFNoC loopback without radio cores in C++ (UHD-3.15.LTS)

Hi all, After testing a loopback in GNU Radio with a custom block (the gain example from the Getting Started with RFNoC guide), I managed to get the samples going from the host to the "RFNoC domain" and back to the host, without involving the radio cores at all. My flowgraph was Signal Source (Hos

Re: [USRP-users] RFNoC loopback without radio cores in C++ (UHD-3.15.LTS)

20:33, Rob Kossler () escribió: > Hi Jorge, > I don't see any indication that you are calling the Connect() function to > connect the RFNoC blocks in the FPGA. > Rob > > On Mon, Nov 9, 2020 at 1:35 PM Jorge Arroyo Giganto via USRP-users < > usrp-users@lists.ettus.com> wr

Re: [USRP-users] RFNoC loopback without radio cores in C++ (UHD-3.15.LTS)

Hi Rob, Thanks again for your response. Enabling UHD logging didn't give much more information about my "No upstream blocks." message or about anything that might give any clues to make the program work. I'll attach my .cpp in this mail in case anyone sees anything off with it (as a quick reminde

Re: [USRP-users] RFNoC loopback without radio cores in C++ (UHD-3.15.LTS)

Hi, In case anyone finds this unresolved entry, I think I found the error I was making, it probably had to do with thread handling. I would recommend always creating a thread group (boost::thread_group tg), and then calling two separate threads, one for RX (tg.create_thread(boost::bind(&receive_th

Re: [USRP-users] DMA FIFO latency with X310

Hi Nick, I am running the X310 interface at 1Gbit using the SFP Adapter that came with the X310. At first I fowollowed the advice from Ettus USRP Manual of setting the MTU to 1500 and _frame_size=1472 when runni

Re: [USRP-users] DMA FIFO latency with X310

Hi EJ, Yes, I tried replacing the DMA FIFO with a normal FIFO and the latency got a bit worse and more irregular (I'm guessing that's due to not smoothing that burstiness in the Ethernet interface with the DMA FIFO you mentioned). I have just tried your graph suggestion (Host -> FFT -> FIFO -> Ho

[USRP-users] Issues getting UHD and DPDK working with Mellanox ConnectX-5

Hi, I am trying to get DPDK and UHD working with a Mellanox ConnectX-5 NIC. I am using UHD-3.15.LTS (the installation was done with PyBOMBS in order to have RFNoC support, I did it following the RFNoC Getting Started guide), with an X310 and running Ubuntu 16.04 on the Host. I have followed the