Hi Kirsten, That warning means you did not provide a custom C++ block controller for your RFNoC block. If you are only using the Nocscript xml to describe your block (most blocks do this), then you can ignore the warning.
Jonathon On Mon, Aug 5, 2019 at 10:49 PM Leong, Kirsten - 0551 - MITLL via USRP-users <usrp-users@lists.ettus.com> wrote: > Could this be because I get the warning ‘can’t find a block controller for > key fmdemod, using default block controller!’ or is this a separate problem? > > > > Thanks, > > Kirsten > > > > *From: *USRP-users <usrp-users-boun...@lists.ettus.com> on behalf of > "Leong, Kirsten - 0551 - MITLL via USRP-users" <usrp-users@lists.ettus.com > > > *Reply-To: *"Leong, Kirsten - 0551 - MITLL" <kirsten.le...@ll.mit.edu> > *Date: *Friday, August 2, 2019 at 12:25 PM > *To: *Lars Kuger <l...@inets.rwth-aachen.de>, "usrp-users@lists.ettus.com" > <usrp-users@lists.ettus.com> > *Subject: *Re: [USRP-users] Error 'Timeout on Chan 0' > > > > I tried reformatting the xml file based off the uhd_rfnoc_adder.xml file; > however, I still get the same error. I’m not trying to throw any packets > away so I cannot ignore the error. My block is expecting to take in a > complex 32bit floats and output a 32 bit float. > > > > *From: *USRP-users <usrp-users-boun...@lists.ettus.com> on behalf of Lars > Kuger via USRP-users <usrp-users@lists.ettus.com> > *Reply-To: *Lars Kuger <l...@inets.rwth-aachen.de> > *Date: *Friday, August 2, 2019 at 10:14 AM > *To: *"usrp-users@lists.ettus.com" <usrp-users@lists.ettus.com> > *Subject: *Re: [USRP-users] Error 'Timeout on Chan 0' > > > > Hello Kirsten, > > I remember getting the same error message while developing a custom RFNoC > block. I found the problem to be caused by the corresponding xml file which > is located in the grc folder. I am not sure what part of the file exactly > caused the error message (maybe the ordering of the parameters or tags > within the parameters) but I eventually solved it by replacing the file > with the xml file from a working block and modifying that one. > > Best regards, > Lars > > > > On 02.08.19 15:50, Leong, Kirsten - 0551 - MITLL via USRP-users wrote: > > Hello, > > > > I am using a USRP X310 and am using gnuradio companion to test a custom > block. The current diagram flows as follows: File Source->RFNoC > FIFO->custom block->complex to image->frequency sink. However, when I try > to execute, I get the error ‘timeout on chan 0’. My testbench passes all 5 > cases; I can read signals on the inputs and outputs of the noc block and > the flow graph works once I remove my custom block. Where else should I be > looking? > > > > Thanks, > > Kirsten > > > > > _______________________________________________ > > 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 >
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