Hello,
I have been unable to find answer as to what is the maximum streaming data rate
is from the zynq fpga to the arm processor in the N3xx USRPs operating in
embedded mode.
Does anyone have an answer to this question?
Thank you,
Sam
Samuel Prager
PhD Student, Electrical Engineering
n depth into it, or to try to replicate it on my own
> > > > hardware.
> > > >
> > > > Marcus is right -- the E3xx uses an idle image in order to reduce power
> > > > consumption when the radio is inactive. I'm not sure if there's a fl
t
> will tell UHD not to load the idle image.
>
> Nick
>
> > On Thu, Mar 8, 2018 at 9:30 PM Marcus D. Leech via USRP-users
> > <usrp-users@lists.ettus.com> wrote:
> > > On 03/09/2018 12:11 AM, Samuel Prager via USRP-users wrote:
> > > > Still looking
Still looking for more info on this problem.
I have the exact same RfNoC block/software program running on an X300 and see
no such jumps or otherwise unexpected behavior.
I have attempted to isolate this issue on the E312 by creating the device3 with
the “no_reload_fpga” flag. (Appropriate
Hi Sam,
> > > >
> > > > I am using command packets to tune the DDC block's DSP frequency. Are
> > > > you using ce_clk and ce_rst for clock and reset? Here is my code if you
> > > > want to take a look: https://pastebin.com/1
> On Sat, Oct 20, 2018 at 8:11 AM Samuel Prager via USRP-users
> > wrote:
> > > Hello,
> > >
> > > I have an RFNoC block that generates command packets to write settings
> > > registers of the downstream connected block using the Control Source
&
Hello,
I have an RFNoC block that generates command packets to write settings
registers of the downstream connected block using the Control Source
(cmdout_tdata) of the noc_shell . Previously this had worked perfectly (prior
to approximately d6b2283 on rfnoc-devel), for both the X300 and E310,
ence I
> > > > > > > > > > > see is that you increment the seq_num. I am leaving it as
> > > > > > > > > > > 12’b0 — could this be causing an issue?
> > > > > > > > > > >
>
>
> > > > > > > > This is something that was simulated/verified and worked in the
> > > > > > > > past, but perhaps a change has been made that prevents this
> > > > > > > > from working?
> > > >
; >
> > > > > > > I will try a release tag as soon as possible — however this is
> > > > > > > something I’ve been seeing for a couple of months now that has
> > > > > > > kept me on pre-2017.4 releases.
> > > > > > >
> > > &
> > > > Hi Sam,
> > > > >
> > > > > I am using command packets to tune the DDC block's DSP frequency. Are
> > > > > you using ce_clk and ce_rst for clock and reset? Here is my code if
> > > > > you want to take a
Hi Marcus,
Following up on this. I tried transmitting a 100mhz BW LFM chirp with the
baseband amplitude scaled down by 1/2 to +-16384. Same behavior as before and
consistent across all tuning frequencies and RX gains.
Here is a link to an image of the result
Hello,
We are experiencing a number of issues with our N300s. We would like to know if
these are known issues and whether or not they are being addressed.
We have recently updated the filesystems, FPGA images and UHD/MPM to 3.13.1
(currently up to date with UHD 3.13.1 release, commit 711ec8a).
Hello,
We are currently seeing frequency tuning times of >100 ms, even when re-tuning
to within 100 MHz of the previous frequency (wherein calibrations routines
should not be rerunning). We are looking at ways to speed this up, including
use of fast lock profiles.
If anyone could provide
From a cursory glance it looks like you are creating (hermetian) symmetry in
your data with phy [whatever][whatever]
I would suggest reviewing the properties of the discrete Fourier transform.
On May 16, 2019, 9:11 PM -0700, Koyel Das (Vehere) via USRP-users
, wrote:
> Hi Marcus,
>
> I emailed
Hi Isaac,
I vaguely remember seeing this behavior on one of our e312s but it’s been a
while. If I recall, the solution involved the RTIMULib.ini file (which should
be created in /etc). Either the ini file was set to use the wrong SPI bus or
the ini file was being saved in the wrong place or
Hi Isaac,
Here is a simple example program I wrote a while back for continuously
streaming IMU data on the E310/E312.
https://github.com/samprager/E312IMUTest
See the README for RTIMULib installation instructions (the correct library is
https://github.com/RPi-Distro/RTIMULib).
Sam
On Nov 12,
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