Using micros() in setInterval()

Hi,

There's a way to set the Thread interval in microseconds?

I tried to edit the "Thread.cpp" file, changing all the millis() to micros(), but it didn't work very well.

Start by reading Thread.cpp and tracing how setInterval() uses millis(). Check the Arduino timing constraints around replacing those calls with micros(), then determine the supported interval semantics and verify them with an Arduino example or timing test. Done means a documented, reliable way to schedule thread intervals in microseconds, if supported.

Written by the indexing model from the issue text.