Re: [USRP-users] DPDK 18.11

Damon, Compatibility with DPDK 18.11 should be included in UHD 4.0, but as of right now there aren't any publicly available branches compatible with DPDK 18.11. -Sam On Mon, Dec 30, 2019 at 10:31 AM Damon Qiu via USRP-users < usrp-users@lists.ettus.com> wrote: > > Hi all, > Is there anyone

Re: [USRP-users] Api to call rfnoc split stream

Hello Snehasish: The Split Stream Block uses the generic block controller, so there should not be anything "extra" that you have to do. Are you getting any errors or warnings when you build your C++ program? --Neel Pandeya On Tue, Dec 17, 2019 at 1:00 PM Snehasish Kar via USRP-users <

Re: [USRP-users] x300 systematic error

Hi Lorenzo, What version of UHD are you using? Can you share your C++ app (either by emailing the mailing list or by emailing it to supp...@ettus.com)? Regards, Nate Temple On Wed, Nov 6, 2019 at 1:41 PM Minutolo, Lorenzo via USRP-users < usrp-users@lists.ettus.com> wrote: > Hi All, > My C++

Re: [USRP-users] uhd_fft failure

It now looks like you need to install "python-qt4" to get around this issue. Same basic method as "python-six", whatever that was that you did successfully. - MLD On Thu, Oct 24, 2019 at 4:37 PM Saeid Hashemi wrote: > Yes, I did those steps as well to install gnuradio from source. > Installed

Re: [USRP-users] uhd_fft failure

Hi Saeid - Not sure what's going on with your GR install ... did you do "sudo make install" after doing "make"? Did you do "sudo ldconfig" after installing? It looks like you need to install "python-sip" to get around this latest issue. Same basic method as "python-six", whatever that was that

Re: [USRP-users] Getting started with our new N310s

Hi Johannes, Verify that your MTU's match on both your host and N3xx. (1Gb should have a MTU of 1500, 10Gb MTU should be 8000). Is your .213 interface connected to the SFP port? Regards, Nate Temple On Tue, Oct 15, 2019 at 9:14 AM Johannes Demel via USRP-users < usrp-users@lists.ettus.com>

Re: [USRP-users] Using DmaFIFO for receive on X310

Hi Rob, I will follow up with you off list with some notes I have for setting up DPDK. We will be publishing an app note on it soon. Regards, Nate Temple On Mon, Sep 9, 2019 at 4:13 PM Rob Kossler wrote: > Thanks Michael, > This info was very helpful. > > Regarding "recv_buff_size", I tried

Re: [USRP-users] Using DmaFIFO for receive on X310

Hi Rob, What version of UHD are you using? 2x RX 50 MS/s streams should work without much issue with a fast enough host, especially to a ram disk. Are you using DPDK? DPDK support for X3xx was recently added to UHD and will reduce the overhead on the host side, which can help quite a bit. Some

Re: [USRP-users] Building UHD installer

Hi Martin, Are you using the PythonAPI within your custom version of UHD? You could disable it if you are not using the PythonAPI. Regards, Nate Temple On Wed, Aug 28, 2019 at 1:17 PM Martin K via USRP-users < usrp-users@lists.ettus.com> wrote: > In Windows I am attempting to create an

Re: [USRP-users] Phase Sync between to UBX-160 Daugtherboards using RFNoC Radio

Hey Felix, Your hunch is correct -- you'll need to use timed commands to issue your tune requests and to initiate streaming. This will involve editing the python script generated by GRC. Here's a relevant GRC manual section [1], and an example snippet of tuning with timed commands in the UHD

Re: [USRP-users] Error during read from x300 over 10G SFP+

Hi David, If you remove the switch, does the USRP operate as expected? What model switch are you using? Does it reorder UDP packets? We generally recommend to avoid using switches, or if one is used, ensure it does not reorder packets. Regards, Nate Temple On Tue, Jul 23, 2019 at 11:41 PM

Re: [USRP-users] RFNoC source block with multiple outputs

Hello Peter, Yes, that is correct, you need multiple AXI wrappers and (optionally) multiple header encoders if you are dealing with multiple ports. From the blocks from our codebase, the DDC [1] and DUC [2] have multiple port configuration, which is done on a for loop, but they don't have header

Re: [USRP-users] Resetting gain during transceiving

Dear Zhenya, I can't reproduce this locally. Could you tell me how exactly, an how often, you're setting the gain? What UHD version are you using? Which Operating System? Which USB hardware? Best regards, Marcus On Mon, Dec 18, 2017 at 6:49 AM, Soldier wrote: > Hi, > >