Are the three hardware serial ports functioning? How do I instruct the Due which port to use for communication? The given examples apply to non-Due boards with a single hardware port.
If hardware serial is not available, what about software serial? I tried compiling the softwareserial.h library, but received this message:
C:\Programs\arduino-1.5.1r2\hardware\arduino\sam\libraries\SoftwareSerial\SoftwareSerial - Copy.cpp:125: error: #error This version of SoftwareSerial supports only 20, 16 and 8MHz processors
Your help is appreciated. Thanks.