Yes, Jack, you've got it!? There is some nuance when someone uses the term "global", and what I was trying to flush out was the "super globals" versus "local file globals".? When I see "extern" that is a pretty good hint.
So what I've been doing, and I think Oliver is doing something similar, is isolating the "local file globals" first.? So that's what I do, is to put them in the existing .cpp file, in their home turf.
At some point it makes sense to re-factor into a class.? That is when a unique new header file is added.? The "local file globals" are scooped up and dropped into that new header file.
Externs are removed from the SDT.h file, and the same goes for function declarations which can be "delisted" from the SDT.h.
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The one exceptional header file is the T41EEE's AudioSignal.h file.? This is a super-important and special header file which contains the Teensy Audio and Open Audio related code.? This header is included into the T41EEE.ino file.
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73 Greg KF5N
