Re: [USRP-users] Bug in timed switching of sample rate

Hi, thanks for the update. Where can I access the bugtracker to keep track on this issue? Or is it an internal one? Is there a plan to implement this feature in the near future? Best regards, Fabian Am 29.01.2019 um 16:11 schrieb Marcus D. Leech: On 01/29/2019 09:23 AM, Fabian Schwartau via U

Re: [USRP-users] Bug in timed switching of sample rate

On 02/04/2019 07:05 AM, Fabian Schwartau wrote: Hi, thanks for the update. Where can I access the bugtracker to keep track on this issue? Or is it an internal one? Is there a plan to implement this feature in the near future? Best regards, Fabian The *public* repo tracks issues here: https:

[USRP-users] Problems with USRP X300 + PCI-Express Desktop Kit + Ubuntu 18.04

Hi, I am trying to connect a USRP X300 (1x UBX) to a PC using the PCI-Express Desktop Kit and I would like to ask for some help trying to make sense of the errors described below. My PC runs a freshly installed Ubuntu 18.04 with UHD built from source. These are the steps that I have done so fa

[USRP-users] using PCIe on X310

I am attempting to use PCIe on an X310 for the first time. I poked around and it looked like I needed to download and install niusrprio-installer-18.0.0.tar.gz. It seems to install correctly. I started up the service and then the X310, but I cannot seem to uhd_find_device. I am running Cento

[USRP-users] Unexpected (increasing) latency for set_rx_gain

Hello, I'm trying to implement an AGC software in our RF application. The setup is the following: - B200mini - master clock rate: 16 MSPS - fs = 32 KSPS - Receive samples in blocks of 32k (1 second). I made a tiny program, where I change rx_gain every 1 seconds (just after rx_streame

Re: [USRP-users] two X310s in one RFNoC flowgraph

I just realized that the order of IP addresses in Device3 matters for boxes that aren't TwinRX as well. So this isn't a multi_usrp twinrx problem, but a more generic one. From: Jason Matusiak Sent: Friday, February 1, 2019 2:02 PM To: Rob Kossler Cc: Ettus Mail

Re: [USRP-users] Unexpected (increasing) latency for set_rx_gain

Hi Brais, On Mon, 2019-02-04 at 18:34 +0100, Brais Ares via USRP-users wrote: > Hello, > > I'm trying to implement an AGC software in our RF application. The > setup is the following: > B200mini > master clock rate: 16 MSPS > fs = 32 KSPS Are you sure? That's a decimation of 500, 125 of which yo

Re: [USRP-users] two X310s in one RFNoC flowgraph

Looking at this a little closer, I think a comment in device3.hpp (in uhd/host/include) probably points to the issue. Before 3 different declarations, the comments include the line: "note this access is not thread safe if peformed during block enumeration" (it is misspelled in the comment). I

[USRP-users] USRP X310 uhd 4.0 fpga rfnoc img download

Hi, I succesfully installed UHD 4.0.0.rfnoc-devel-702-geec24d7b from source on Ubuntu 16.04 and when I launched uhd_images_downloader it doesn't download the rfnoc images. In /usr/local/share/uhd/images I can only see regular images, nothing with RFNOC in it's name. Is there somewhere else where

Re: [USRP-users] Live rate changes within an RFNOC block

Thanks for the feedback. I've simulated the block and got it working with no errors over a few million samples as long as I assert axi_rate_change's clear when I change N (I've been swapping rates once every 200 transmissions in the testbench). I still get the timeout error in hardware, though. Cou

Re: [USRP-users] Live rate changes within an RFNOC block

Hi Andrew, One thing the testbench infrastucture does not simulate is packet latency variation. I have seen this happen in the past where custom code has a subtle AXI stream implementation bug that only comes up in hardware since the offending tvalid / tready pattern does not occur in simulation.

Re: [USRP-users] Custom RFNOC fpga image build failed

Hi Jonathon, I installed offline version of Xilinx and checked its MD5sum. It matches. But still it gave error. Then i have installed Vivado using online installer. This time i could compile FPGA image. So problem is solved. Thanks for your time and effort. Best regards. Ramazan On 4.02.2