{jcomments on}Her er en skisse som viser predefinerte konstanter.
//
// This sketch will print some of interesting predefined constants to Serial.
//
// For more information, look at
// http://electronics4dogs.blogspot.com/2011/01/arduino-predefined-constants.html
// helper macro
#define LINE(name,val) Serial.print(name); Serial.print("\t"); Serial.println(val);
void setup()
{
Serial.begin(9600);
// Compile file path (internal file of compilation proccess)
LINE("__FILE__", __FILE__);
// Current line (but in __FILE__)
LINE("__LINE__", __LINE__);
// Name of current function
LINE("__func__", __func__);
// Date of compliation
LINE("__DATE__", __DATE__);
// Time of compilation
LINE("__TIME__", __TIME__);
// Version of comilator (avr-gcc)
LINE("__VERSION__", __VERSION__);
// Counter
LINE("__COUNTER__",__COUNTER__); // 0
LINE("__COUNTER__",__COUNTER__); // 1
LINE("__COUNTER__",__COUNTER__); // 2
Serial.println("\nCPU:");
#if defined(__AVR_ATmega168__)
// Arduino Diecimila and older
LINE("__AVR_ATmega168__", __AVR_ATmega168__);
#endif
#if defined(__AVR_ATmega328P__)
// Arduino Duemilanove and Uno
LINE("__AVR_ATmega328P__", __AVR_ATmega328P__);
#endif
#if defined(__AVR_ATmega2560__)
// Arduino Mega 2560
LINE("__AVR_ATmega2560__", __AVR_ATmega2560__);
#endif
#if defined(__AVR_ATmega1280__)
// Arduino Mega
LINE("__AVR_ATmega1280__", __AVR_ATmega1280__);
#endif
#if defined(__AVR_ATmega32U4__)
// Arduino Leonardo
LINE("__AVR_ATmega32U4__", __AVR_ATmega32U4__);
#endif
#if defined(__SAM3X8E__)
// Arduino Due
LINE("__SAM3X8E__", __SAM3X8E__);
#endif
// Determine board type
#if defined(__AVR_ATmega168__) || defined(__AVR_ATmega328P__)
Serial.println("Regular Arduino");
#elif defined(__AVR_ATmega2560__) || defined(__AVR_ATmega1280__)
Serial.println("Arduino Mega");
#elif defined(__AVR_ATmega32U4__)
Serial.println("Arduino Leonardo");
#elif defined(__SAM3X8E__)
Serial.println("Arduino Due");
#else
Serial.println("Unknown");
#endif
Serial.println("\nArduino:");
// Arduino SW version
LINE("ARDUINO", ARDUINO);
// Oscillator frequency
LINE("F_CPU", F_CPU);
}
void loop(){}
