No interrupt call function needed

[DocAlex]

Hello,

thank you for providing this code.

You are attatching the interrupt to an helper function to call the opject read_AB. This is not necessary. Instead using

attachInterrupt(digitalPinToInterrupt(PIN_A), encoderISR, CHANGE); //call encoderISR() every high->low or low->high changes

You can use:

attachInterrupt(digitalPinToInterrupt(PIN_A), []() {
       encoder.readAB();
    }, CHANGE);

make sure "encoder" has been declared in this context.

This approach is called "lambda function" and is even faster.

Thank you again