if you know the pin number at compile time you can optimize a lot.
if the pin number is not known ...
check - digitalWriteFast, digitalReadFast, pinModeFast etc - Bugs & Suggestions - Arduino Forum -
if you know the pin number at compile time you can optimize a lot.
if the pin number is not known ...
check - digitalWriteFast, digitalReadFast, pinModeFast etc - Bugs & Suggestions - Arduino Forum -