Experimental SerialPort communication for mruby.
This is a very early implementation. Only tested on Mac OS X.
Typical usage:
sp = SerialPort.new("/dev/ttys001", 115200).open
sp.write "start"
puts sp.read(100)
sp.closeBlock interface is also available:
SerialPort.new("/dev/ttys001", 115200) do |sp|
sp.write "start"
puts sp.read(100)
end # also closes the port