Hi Marcus, That's what I'm currently doing. It's not very efficient as I have to constantly check the file size. If I can have a counter that is increments each time an FFT is written to the file by the flow graph I would be able to trigger an event based on the counter value. That was my concern.
Regards, Hasini > On Sep 19, 2016, at 3:29 PM, Marcus Müller <marcus.muel...@ettus.com> wrote: > > If you need to do that externally, I'd just watch the file size and divide it > by the item size (4B per floating point number) and by the FFT length. > > > Best regards, > > Marcus > >> On 09/18/2016 11:21 PM, Hasini Abeywickrama wrote: >> Hi Marcus, >> >> It's like I need to start reading and processing the file after a certain >> number of FFTs are being written to the file. For that I would need to >> maintain a counter and I'm trying to figure out how to do it. >> >> Regards, >> Hasini >> >>> On Mon, Sep 19, 2016 at 2:58 PM, Marcus Müller <marcus.muel...@ettus.com> >>> wrote: >>> What would you need that counter for? There's the 1/(FFT length) fixed >>> relation between samples processed and numbers of FFTs done, so this is >>> pretty much a redundant piece of info, but maybe I'm just missing the use >>> case. >>> >>> Best regards, >>> >>> Marcus >>> >>> On 09/18/2016 10:23 PM, Hasini Abeywickrama wrote: >>>> Hi all, >>>> >>>> I have a GNU Radio flowgraph which uses a USRP to receive a signal, >>>> converts it to log power FFT and then writes the result to a file, using >>>> File Sink. I want to have a counter which increments with each FFT written >>>> to the file. >>>> >>>> Is there a way of maintaining and increasing count of the FFTs written to >>>> the file, while the flowgraph is still running? >>>> >>>> >>>> _______________________________________________ >>>> Discuss-gnuradio mailing list >>>> Discuss-gnuradio@gnu.org >>>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >>> _______________________________________________ Discuss-gnuradio mailing >>> list Discuss-gnuradio@gnu.org >>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
_______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio