ok thanks.
Hood

oh my god !!!!

today is special day for me !!!

NeoTO just bought a new pokeys usb board to Spain.

Is for make a 3 axys control with a Mach3 software STEP/DIR

STEP/DIR of pokeys I converted to quadrature encoder A and B channel for make a "gearing" with a electronic inverter.

When receive pokeys and test all, I will write here my experience.

Thanks fot all.

Carlos

@Hood: apparently, index signal uses 'normal' polarity - 1 should indicate a index signal and 0 no signal. I will add an additional option to invert the polarity.

I am not really sure I follow but will wait to see what happens with the update
Hood

I am not really sure I follow but will wait to see what happens with the update
Hood

This option was made for an encoder that outputs 1 when the index signal is present and 0 when it is not. This is the other way around from what you have when you connect index input pin to ground at the moment of the index signal.

Yes but I have also tried connecting to 3.3v  and it acts the same.
Hood

I've tested it and it should behave like this:
- on index pin rising or falling signal front, the counter is reset. It should not keep resetting.

I can not get it to work here. If I apply 5v to pin 9 nothing happens, if I remove 5v from Pin 9 nothing happens. I can get it to zero if I connect to Gnd but it will not count even if I remove the Gnd connection after.
Hood

Hood, do you have one PoKeys board or is it possible that you try this on another one? Enable index inputs and turn the MPG - it must count. If you then connect the input to GND, the counter must reset. Even if you keep it at GND, the counter must then count from 0 and not reset.
Namely, we can not replicate your situation here.