It's possible use external interrupts/attachInterrupt() with the ATtiny85 when I program with Arduino IDE?
If is possible, how many inputs (for external interrupts) the ATtiny85 have and which are they? Someone have an example code?
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1The ATTINY 85 doesn't have external interrupts. You'll have to use pin change interrupts instead.– Delta_GMar 25 '20 at 16:15
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2Except... PB2 has INT0...– Majenko ♦Mar 25 '20 at 16:28
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Darnit. I just looked at the spec sheet and didn't see one listed.– Delta_GMar 25 '20 at 18:34
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Pin PB2 is the only pin that has a real external interrupt. This is INT0.
Whether you can use attachInterrupt(0, ...) or not is entirely down to whether it is implemented in the core that you are using.
