Thanks Tom, that gives me a good starting point. -Doug
________________________________ From: [email protected] [[email protected]] on behalf of Tom Rondeau [[email protected]] Sent: Tuesday, February 17, 2015 1:47 PM To: Anderson, Douglas J. Cc: GNURadio Discussion List Subject: Re: [Discuss-gnuradio] Calling usrp_source block function from other block On Tue, Feb 17, 2015 at 11:52 AM, Anderson, Douglas J. <[email protected]<mailto:[email protected]>> wrote: Hi all, I'm looking for the best way to retune the USRP from another block in a running flowgraph. I've seen the tune callback method used by bin_statistics_f, but I was wondering if there are other ways to do it. I took a look at message passing (http://gnuradio.org/doc/doxygen/page_msg_passing.html), but I'm not sure how to bind usrp_source's set_center_freq to handle a freq passed by message, etc. Are there any examples of doing this laying around or is bin_statistics_f's tune callback still the best way to do it? -Doug Hi Doug, Take a look at the UHD page: http://gnuradio.org/doc/doxygen/page_uhd.html The existing command message interface to the UHD block's already allows you to set the frequency with a message. This manual page will tell you how to format that message properly. Tom
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