Hello everyone,
I'm looking for a way to drive the GPIO outputs on my x310 with a clock output
divided down from the sample clock (or multiplied up from 1 PPS), which I would
use to drive an external switch.
I'm hoping for tight, deterministic timing, so I'm skeptical of manual API
calls route
Hi Dan,
what's the order of frequency of the clock you're trying to drive?
Three thoughts:
* I agree, for anything beyond let's say 1kHz (don't nail me on this),
using timed commands from the host to control the exact GPIO
transition would only work in theory, but not in practice, sinc
Marcus,
Thanks for the guidance and detail!
The fastest clock frequencies I'm looking for would probably run on the order
of ~1 kHz - 100 kHz, but being able to tie it to the sample clock would be key
for my application (sort of a self-calibrating radiometer).
I'll start with a look gpio_atr_i
Dan,
you can also use timed commands to write to GPIOs at the "same time" as
a certain sample. I use quotes, because there's some delay between the
sample touching the radio state machine and it hitting the antenna, as
well as between GPIOs being toggled in the FPGA and the pin actually
going high
For another customer I suggested adding a settings_reg (you'll find
examples of that strewn all across the UHD code, if something's unclear,
just ask) that would be a receiver for things like the clock divider's
max counter value; these could be timed command-controlled.
Best regards,
Marcus
On
Hello everyone,
We are designing a pseudo-random data generator using an LFSR register with
the Fibonacci method in RFNoC, to be implemented into the E310, taken as
reference the "SIGGEN" block provided in the RFNoC library. The problem is
that we do not have any data output and in the console of
Great! Thanks to you and Martin, I'll have some things to try out :)
Much appreciated.
Dan
-Original Message-
From: USRP-users [mailto:usrp-users-boun...@lists.ettus.com] On Behalf Of
Marcus Müller via USRP-users
Sent: Thursday, August 17, 2017 9:53 AM
To: usrp-users@lists.ettus.com
Sub
The last thread got a little long and kind of died, so I decided to make a new
thread summarizing all the findings thus far.
I'm running on an x310 across dual 10 Gigabit ethernet, outfitted with twin
basic tx rx daughbords. I'm running on UHD version 3.11.0. Ideally, I would
like two simultan
