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?
>
>
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