On 07/11/2017 11:56 AM, Will Thompson via USRP-users wrote:
Hi all.
So I’m thinking of starting a project with the E310 that requires high
accuracy control of a switch.
Basically I need to receive a single RF sample (@1MHz) (1us), then
send a signal via the GPIO on a second sample (2us), and then receive
a signal again on the third sample (3us) and alternate between these
functions for a period of time.
I was wondering if anyone has experience with controlling the GPIOs on
the E310, and knows how accurate you can synchronise the signal
outputs with RF received samples? i.e. Can I synchronise the GPIO
signalling and the received RF sampling down to micro seconds?
Also, if anyone has any good resource links for the E310 and GPIO
could you pass them on please?
Kind regards
Will
The GPIO interface is normally accessed using UHD host-side API
elements, which operate asynchronously to the sample stream, so there's
no way
to guarantee really-tight timing.
You'd likely need to dive into FPGA coding to achieve this type of
application.
https://files.ettus.com/manual/page_gpio_api.html
Has a little bit of information, but deep answers to your query can be
found in the FPGA source code.
--
William Thompson Ph.D.
Senior Research Engineer
Toshiba Research Europe Limited
32 Queen Square, Bristol, BS1 4ND, UK
Tel: +44 (0) 117 906 0734
------------------------------------------------------------------------
NOTE: The information in this email and any attachments may be
confidential and/or legally privileged. This message may be read,
copied and used only by the intended recipient. If you are not the
intended recipient, please destroy this message, delete any copies
held on your system and notify the sender immediately.
Toshiba Research Europe Limited, registered in England and Wales
(2519556). Registered Office 208 Cambridge Science Park, Milton Road,
Cambridge CB4 0GZ, England. Web: www.toshiba.eu/research/trl
------------------------------------------------------------------------
This email has been scanned for email related threats and delivered
safely by Mimecast.
For more information please visit http://www.mimecast.com
------------------------------------------------------------------------
_______________________________________________
USRP-users mailing list
USRP-users@lists.ettus.com
http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
_______________________________________________
USRP-users mailing list
USRP-users@lists.ettus.com
http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
