[Discuss-gnuradio] GRC, Recording chunks of spectrum triggered on input signal level

[Staffan Bruce]

Hello,

 

Being limited in my programming skills, I would very much like to do the following in Gnuradio Companion:

 

* Sample an input stream (from RTL-SDR)

* Generate a trigger signal based on the input stream

* If a trigger criterion is met, save/sink the data stream for a preset time and give the file a name based on time of acquisition (or similar)

* Reset the flow and start all over.

 

Getting the input stream is no problem and I believe I know how to generate the trigger signal, but starting a sink (with a new filename) for a preset time (number of samples is fine) based on this signal seems tricker (not to mention the file naming part).

 

If anyone can provide suggestions for how to

* start a new sink (new file) based on an integer signal shifting from 0 to 1

* automatically name each file sequence, sequential numbering is OK

 

this would be very much appreciated!

 

Many thanks in advance!

 

Regards,

  Staffan