'To save your data
Dim m As Map
m.Initialize
m.Put("baud_rate", your_baud_rate)
m.Put("pref_communication", your_pref_comm)
m.Put("calibration",your_calibration)
File.WriteMap(File.DirInternal,"settings.dat",m)
'TO READ THE VALUES TOO
Dim myData As Map = File.ReadMap(File.DirInternal,"settings.dat")