Hi All, does anyone have an example of how to control GOIO lines on the RPi4 
from within a GRC flowgraph. I’m guessing it’s an OOT module.

I need to generate a signal of  a few 100Hz & control  GPIO lines at various 
points though the cycle.

Alternatively, I could generate the signal & lines with external hardware & 
read them with GnuRadio.

Tnx, Dave

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