[Discuss-gnuradio] Feedback between Blocks

[Shyamnath]

Hi all,

I am trying to incorporate a few modifications to the DBPSK implementation
in gnuradio for which I need to implement feedback between the different
signal. So my question, is there a clean way to implement feedback between
the different signal processing blocks. More specifically if my flow graph
is BLOCK1 --> BLOCK2 -> BLOCK3 and I want to have a feedback from block3 to
block1 is it possible? I am interested in feedback of a  flag bit.

The way I was thinking of conceptually implementing this is to have a shared
variable between the two modules and tell then communicate through this
shared variable. However, I am afraid that the overhead is too much for
processing the samples from the USRP on the fly. Is there any cleaner way to
do this?

Thanks
Shyam
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