Demo uses Component SynchroMaster for SPI communication. 
The Master in neverending loop sends the message " Message: Master " and received
block of characters save into array 'DataIn'.

SPI properties:
Clock edge	           : falling edge
Shift clock rate           : 4,34us
Input buffer	           : 17 bytes
Output buffer	           : 17 bytes
Shift clock idle polarity  : Low