What compiler directive is present? (e.g. __AVR_ATmega32U4__, __AVR_ATtinyX5__)

[bjmckenz]

I'm looking to use the NewPing library (provides nice support for ultrasonic sensors). It has specific directives for the Mega and "normal" Arduino as follows:

void NewPing::timer_stop() { // Disable timer interrupt.
#if defined (__AVR_ATmega32U4__) // Use Timer4 for ATmega32U4 (Teensy/Leonardo).
    TIMSK4 = 0;
#else
    TIMSK2 &= ~(1<<OCIE2A);
#endif

I wish to add something like:

#elseif defined(__AVR_ATtinyX5__)
    TIMSK &= ~(1<<OCIE0A);

but I haven't figured out what #define is present for the Digistamp. What is it?

I've tried both __AVR_ATtinyX5__ and __AVR_ATtiny85__ but neither is defined.

(I'm OK with figuring out the right timer flags and registers, and I've been RTing the FM about those. This is more about Arduino)

Thanks.

[digistump]

if defined(__AVR_ATtiny85__) is used by TinyWire which is used for all I2C with the Digispark so that should definitely work

[bjmckenz]

Thanks very much. You are correct. PEBKAC -- I had this:

#elseif defined(__AVR_ATtiny85__)
    OCR0A = min((frequency>>2) - 1, 255); // Every count is 4uS, so divide by 4 (bitwise shift right 2) subtract one, then make sure we don't go over 255 limit.
    TIMSK |= (1<<OCIE0A);                // Enable Timer0 interrupt.

instead of this:

#elif defined(__AVR_ATtiny85__)
    OCR0A = min((frequency>>2) - 1, 255); // Every count is 4uS, so divide by 4 (bitwise shift right 2) subtract one, then make sure we don't go over 255 limit.
    TIMSK |= (1<<OCIE0A);                // Enable Timer0 interrupt.


Interestingly, this is the error that it gives (when I used "#elseif"):
C:\Arduino Digispark\libraries\NewPing\NewPing.cpp: In static member function 'static void NewPing::timer_us(unsigned int, void (*)())':
C:\Arduino Digispark\libraries\NewPing\NewPing.cpp:154: error: 'OCR2A' was not declared in this scope
C:\Arduino Digispark\libraries\NewPing\NewPing.cpp:155: error: 'TIMSK2' was not declared in this scope
C:\Arduino Digispark\libraries\NewPing\NewPing.cpp:155: error: 'OCIE2A' was not declared in this scope

somehow the preprocessor is not handling/reporting the error the way I expected.

Thanks much!