Re: GNU Radio Companion N310 GPIO Sink/Source block

[U L]

Joshua,

I have not personally used the N3XX devices, but I did recently successfully manipulate the GPIO on a N210 w/ LFXX daughtercards.

The relevant UHD manual section for you I think is https://files.ettus.com/manual/page_usrp_n3xx.html#n3xx_fpgio (but also see the X310 section at https://files.ettus.com/manual/page_gpio_api.html which I think is a much better exposition).

I also would recommend looking at the UHD gpio utility often installed to <prefix>/lib/uhd/examples. It's source is https://github.com/EttusResearch/uhd/blob/master/host/examples/gpio.cpp. This lets you manipulate some of the gpio directly from a CLI. I believe most of the relevant UHD C/C++ API functions are available in Python.

Hope this helps,

Jared.

On Tue, Jun 28, 2022 at 2:41 PM White, Joshua J <jjwhite@riversideresearch.org> wrote:

(Cross-posted on usrp-users and discuss-gnuradio)

For anyone who's familiar with using the USRP3 (specifically the N310) with GNU Radio:

I'm trying to create a flowgraph in gnu radio companion that incorporates reading a value from one pin on the front panel GPIO of the N310 and writing a value to another pin. I'm looking for a source/sink block for GNU Radio companion that can accomplish this. Has anyone done this previously, or can anyone point me in the right direction? I have very little experience with GNU Radio and have no expertise in programming OOT modules. Thank you for any help you can provide.

 

Very respectfully, 

 

Joshua White 

Precision Timing Systems Engineer 

Engineering & Support Solutions Directorate 

www.riversideresearch.org 

T: 937.986.3153 | F: 937.431.3811 

 

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