Copy one Arduino Print stream to multiple Print streams
This library is like the UNIX "tee" command, which splits an output stream into two streams, but with N branches. On the Arduino, an output stream is instance of the Arduino Print class. If you need the flush method, you must use NeoTeeStream instead.
Simply declare an array of streams:
Print *streams[2];
... and pass the array and its size to the NeoTee constructor:
NeoTee tee( streams, sizeof(streams)/sizeof(streams[0]) );
Any Print operation on "tee" will be duplicated on all Print streams in the array.
tee.println( F("This is sent to all Stream instances in the array.") );
Because there is no base class with "begin" and "end" methods, you must call those explicitly on the individual Streams (e.g., Serial.begin).
Although it is questionable, read and peek are implemented in NeoTeeStream.
This kind of random "merging" of an input stream is not a UNIX feature. :) They
have to be provided because they are marked as pure virtual in the Stream class
NOTE: You can mix different kinds of Print streams in the array:
NeoSWSerial gps_port( 3, 4 );
Print *justSerial[2] = { &Serial, &gps_port };