System calls
version()
System.version, version
Since 0.4.7:
Determine the version of Device OS available. Returns a version string
of the format:
MAJOR.MINOR.PATCH
Such as "0.4.7".
For example
void setup()
{
Log.info("System version: %s", System.version().c_str());
// prints
// System version: 0.4.7
}