gr-eventstream <https://github.com/osh/gr-eventstream> includes code that does a similar thing. It has not been ported to recent GR releases, though.
On Fri, Oct 30, 2020 at 11:47 AM Tim Huggins <huggins.timo...@yahoo.com> wrote: > I am trying to create a custom block that outputs data if there is no > input. The goal is to create a steady stream of data to the OFDM > transmitter block even though the real source data is bursty. I've been > working unsuccessfully to come up with a solution and I am starting to > think it may not be possible. The idea would be to check the size of the > input data and if it is 0 then send a filler pattern; is this possible? > > Thank you, > > Tim >