On Fri, 16 Sep 2016, Britton Kerin wrote:

I haven't looked what EMPTY_INTERRUPT() does exactly, but I've got a
program that doesn't seem to care whether I include it or not.  Is it
effectively the default behavior, and if so may this behavior be
relied upon?

Just what the name suggests:
It's equivalent to ISR(...) {} .

Michael   henne...@web.cs.ndsu.nodak.edu
"Sorry but your password must contain an uppercase letter, a number,
a haiku, a gang sign, a heiroglyph, and the blood of a virgin."
                                                             --  someeecards

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