Discerning Arduino type from within Arduino program

Projects Programming
1

Is it possible for an Arduino program to discern what type of Arduino it's running on? The easiest way to implement this would be with a constant set at compile time and available to the program. Does this exist?

Thanks.

2

Oops, should have searched harder. Here is the answer to my question:

3

Here's a snippet of code that sets up a 'ArduinoType' with a value depending on whether it's running on a Leonardo or Mega2560.

const byte Leonardo = 1;
const byte Mega = 2;
#ifdef __AVR_ATmega1280__
  const byte ArduinoType = Leonardo;
#elif __AVR_ATmega2560__
  const byte ArduinoType = Mega;
#endif

EDIT: Wrong, fixed below

4

paulrd:
Here's a snippet of code that sets up a 'ArduinoType' with a value depending on whether it's running on a Leonardo or Mega2560.

const byte Leonardo = 1;

const byte Mega = 2;
#ifdef AVR_ATmega1280
  const byte ArduinoType = Leonardo;
#elif AVR_ATmega2560
  const byte ArduinoType = Mega;
#endif

But a Leonardo doesn't use a ATmega1280 chip?

5

Can a device read it's own signature bytes? That would be convenient.

6

Sorry you're right, retrolefty. It should read:

const byte Leonardo = 1;
const byte Mega = 2;
#ifdef __AVR_ATmega32U4__
  const byte ArduinoType = Leonardo;
#elif __AVR_ATmega2560__
  const byte ArduinoType = Mega;
#endif

And obviously the Mega will have to be a Mega2560. But you get the idea.

7

paulrd:
Sorry you're right, retrolefty. It should read:

const byte Leonardo = 1;

const byte Mega = 2;
#ifdef AVR_ATmega32U4
  const byte ArduinoType = Leonardo;
#elif AVR_ATmega2560
  const byte ArduinoType = Mega;
#endif




And obviously the Mega will have to be a Mega2560. But you get the idea.

Unless of course the mega board is the original mega 1280 board as I own. :wink: