Re: [Discuss-gnuradio] How to access UHD from within my own OOT block?

[Marcus Müller]

Hi Jeroen,

the usrp blocks have public methods to do exactly that. It really looks like what you've proposed :)

Not so long ago, Martin added support for doing things like that by sending messages or stream tags to the block, too.

As you haven't found a starting point yet: Here's GNU Radio's official API documentation:
http://gnuradio.org/doc/doxygen/
and the gr-uhd blocks are here:
http://gnuradio.org/doc/doxygen/group__uhd__blk.html
http://gnuradio.org/doc/doxygen/namespacegr_1_1uhd.html

Quite straightforward :)

Greetings,
Marcus

On 08.10.2014 16:01, Boschma, J.J. (Jeroen) wrote:

Dear all,

In the Companion GUI I use the UHD source- and sink-blocks, together with my own OOT blocks. Now I want to control the UHD blocks from within my own blocks, for example changing the center frequency. So in my own block I would like to write something like:

    usrp->set_center_freq(whatever);

I there an easy interface/API available to do this? Or do I have to download the gr-uhd, modify it (maybe add a method to get a pointer to the USRP out of it?) and rebuild? Unfortunately I just could not find a starting point yet.

Regards,

      Jeroen



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