Incremental rotary encoder with 128 PPR? For MIDI CC

[ShermanP]

@MarkT

Bouncing is not an issue for quadrature encoders since if you respect every transition you will not lose precise lock with the position.

But respecting every transition means dealing with every bounce. The point of my method is to only have four interrupts per detent even if the switch bounces. It doesn't improve accuracy, it just reduces the servicing overhead.

@MarkT

For rotary input encoders I would suggest adding 1 count hysteresis to the value reported back to the main program - typical rotary encoders go through 4 transitions (complete 360 degrees of quadrature) per detent so this isn't going to lose resolution.

I don't understand what 1 count hysteresis is. Do you have a code example?