Re: [USRP-users] Measuring TDOA for Localization

2020-01-09 Thread Brian Padalino via USRP-users
On Thu, Jan 9, 2020 at 6:45 PM Richard Bell wrote: > No I don't need to know phase information. I'm cross correlating the pairs > of receivers and the location of the peak gives me the TDOA. If the > hardware chains across different radios introduce different delays, that > would invalidate the T

Re: [USRP-users] Measuring TDOA for Localization

2020-01-09 Thread Richard Bell via USRP-users
No I don't need to know phase information. I'm cross correlating the pairs of receivers and the location of the peak gives me the TDOA. If the hardware chains across different radios introduce different delays, that would invalidate the TDOA measurement. So long as the delay is the same through all

Re: [USRP-users] tx_samples_from_file : Issue with repeat option

2020-01-09 Thread Marcus D. Leech via USRP-users
On 01/09/2020 09:49 AM, voonna santosh wrote: Hi Marcus, Build is failing for 3.14.1.1 and the reason is that "uhd_dpdk.c" is written in C99 mode. BR, Santosh If you aren't actually using DPDK, which you wouldn't have been with UHD 3.10, then when you're building, in the CMake step, use

Re: [USRP-users] Measuring TDOA for Localization

2020-01-09 Thread Brian Padalino via USRP-users
On Thu, Jan 9, 2020 at 12:14 PM Richard Bell via USRP-users < usrp-users@lists.ettus.com> wrote: > Hello, > > I'm working on a TDOA based localization platform using 3 USRP X300's as > receivers. I have them synchronized with a 10 MHz ref and PPS signal > generated by an OctoClock. However, I'm ha

Re: [USRP-users] GPIO Example Failure on N310

2020-01-09 Thread Jeff S via USRP-users
Sam, I have a cable connected to a logic analyzer for my X310 which I was using to investigate the --bitbang option on the gpio test for changing the GPIO outputs . I could probably do something manually to look at it as inputs. Jeff From: Sam Reiter Sent: Th

Re: [USRP-users] GPIO Example Failure on N310

2020-01-09 Thread Sam Reiter via USRP-users
Jeff, I'd say it's worth trying. Do you currently have any cabling or external connections to your GPIO port? Sam Reiter Ettus Research On Mon, Jan 6, 2020 at 6:27 PM Jeff S wrote: > Sam, > > Everything was downloaded from the images_downloader. I have not modified > the FPGA image or any of

Re: [USRP-users] X310 GPIO Ettus Code Example Question

2020-01-09 Thread Sam Reiter via USRP-users
Jeff, Yes. For ATR to put that line high on TX, the value should be 1 as you noted. Sam Reiter Ettus Research On Tue, Jan 7, 2020 at 1:12 PM Jeff S via USRP-users < usrp-users@lists.ettus.com> wrote: > Relating to the description of the GPIO: > https://files.ettus.com/manual/page_gpio_api.html

Re: [USRP-users] Building RFNoC Image with OOT Module on X310 - Module not found

2020-01-09 Thread EJ Kreinar via USRP-users
Felix, thanks for the catch. That looks like a problem I may have introduced by accident a few months ago. This PR should fix it, hopefully: https://github.com/EttusResearch/fpga/pull/47/files Note I expect this would get merged into master and potentially not backported to whatever version of uhd

Re: [USRP-users] Fwd: dpdk-test does not work

2020-01-09 Thread Sam Reiter via USRP-users
Akin, I'd recommend you check out our DPDK setup guide - hot off the presses: https://kb.ettus.com/Getting_Started_with_DPDK_and_UHD Sam Reiter Ettus Research On Wed, Jan 8, 2020 at 10:52 PM akin soysal via USRP-users < usrp-users@lists.ettus.com> wrote: > > > -- Forwarded message ---

Re: [USRP-users] tx_samples_from_file : Issue with repeat option

2020-01-09 Thread Marcus D. Leech via USRP-users
On 01/09/2020 09:49 AM, voonna santosh wrote: Hi Marcus, Build is failing for 3.14.1.1 and the reason is that "uhd_dpdk.c" is written in C99 mode. BR, Santosh What OS and version are you using? What compiler version? On Wednesday, January 8, 2020, 08:47:07 PM GMT, Marcus D. Leech wrot

[USRP-users] Measuring TDOA for Localization

2020-01-09 Thread Richard Bell via USRP-users
Hello, I'm working on a TDOA based localization platform using 3 USRP X300's as receivers. I have them synchronized with a 10 MHz ref and PPS signal generated by an OctoClock. However, I'm having trouble getting reliable localization performance through this system. My TDOA measurements are not wh

Re: [USRP-users] tx_samples_from_file : Issue with repeat option

2020-01-09 Thread voonna santosh via USRP-users
Hi Marcus,   Build is failing for 3.14.1.1 and the reason is that "uhd_dpdk.c" is written in C99 mode.BR,Santosh On Wednesday, January 8, 2020, 08:47:07 PM GMT, Marcus D. Leech wrote: On 01/08/2020 03:45 PM, voonna santosh wrote: Hi Marcus,   Which version would you suggest? Also

Re: [USRP-users] Building RFNoC Image with OOT Module on X310 - Module not found

2020-01-09 Thread Felix Greiwe via USRP-users
Hi Brian, thank you for the answer, with your help I was able to successfully build an Image! One last question: Do I need to worry about all those critical warnings that popped up during the build? Seems like a lot to me. Example: CRITICAL WARNING: [Vivado 12-1790] Evaluation License Warning: T

Re: [USRP-users] DPDK runtime error

2020-01-09 Thread Florian Kaltenberger via USRP-users
Hi Aaron, thanks for spotting this! Indeed that was a mistake. I also had to adjust the dpdk-num-mbufs=4059 and dpdk-mbuf-cache-size=315 like in the example configuration file for uhd 3.15.0 and then it worked! Yay! Now lets see if OpenAirInterface runs more stable with this! :) Florian. On