ISR naming UNO R4 wifi

Projects Programming
1

Hi, I'm having trouble properly naming ISRs in a way that doesn't cause compiler errors. When I attach the interrupt, the compiler is erroring on the ISR name, saying "'ISR name' was not declared in this scope". When I have programmed with the nano 33 BLE, it seemed happy with me calling the ISR whatever I want.

I've been through several forum posts as well as the Uno R4 user manual and haven't found anything specific to the Uno R4.

I have tried the following:

attachInterrupt(digitalPinToInterrupt(DOWN_FAST), downFast, FALLING);

attachInterrupt(digitalPinToInterrupt(DOWN_FAST), INT0_vect, FALLING);

Note, "DOWN_FAST" is attached to digital pin 2, which I believe corresponds to external interrupt 0.

Any help would be greatly appreciated. Thanks!

2

Please provide a complete example showing the problem.

3

In cleaning up my code some more to post a full example, I believe a missing bracket to close out the void setup() was the cause. It appears to be compiling properly now, thanks.