Is there a library or something similar to make 2 way serial over USB communications easier?
Something that will allow to query an Arduino
Well, on the Arduino side you might consider Bitlash: http://bitlash.net....It might be possible to give a better answer if you said a little more about what you have in mind…
But personally, I would use switch/case...
#define IDLEN 12 // make this bigger if 12 is not enough
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