Hi all, I am trying to implement interrupts on the A and B pins of a rotary encoder. I can't find any documentation on this, help please.

Toit doesn't give direct access to interrupts. If you just want to wait for a pin to change you would generally use

pin.wait_for

. However, for a rotary encoder that would probably be too slow. I think the pulse_counter library is what you are looking for: https://libs.toit.io/pulse_counter/library-summary

Mmm, rotary encoders rely on the relationship of Pin A and Pin B. There are usually four possible stable states. which indicate the direction of rotation.

The pulse counter has one pin to count and another as control pin for the direction.

Ok, that may work, i'll investigate.

two years later -- but in case it's helpful, I implemented an algorithm for a rotary encoder using a pulse counter: https://github.com/aschober/toit-m5stack-dial/blob/260e496420361ef2f15b6247567bffbabfc3b913/src/m5stack_dial.toit#L166-L226

👌🏻 Thank you