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From: | Marcus D. Leech |
Subject: | Re: AW: AW: USRP, GPIO toggling and Gnuradio |
Date: | Fri, 10 Sep 2021 12:59:27 -0400 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.13.0 |
Every GPIO state transition requires a transaction across your network interface, and then into the FPGA GPIO logic. That's the absolute upper limit onIs there any alternative to the standard GPIO UHD interface, that allows me the desired speed and is this issue I see related to gnuradio and its scheduler or rather to the UHD API for the GPIOs?
BR,
Anton
Von: Marcus D. Leech <patchvonbraun@gmail.com>
Gesendet: Freitag, 10. September 2021 18:04
An: Dobler, Anton; discuss-gnuradio@gnu.org
Betreff: Re: AW: USRP, GPIO toggling and GnuradioOn 2021-09-10 11:54 a.m., Dobler, Anton wrote:
Toggling GPIOs using the standard GPIO interface for signals this fast is likely not going to be very speedy.
I am extracting the package rate of a receive signal using a rather complex GRC flowgraph, i.e. I am detecting the preamble of a receive signal and generate a clock from here. This clock signal period is within the range of 100us - 1ms.
The GR experts will have to answer your other questions.
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