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Hi Guys,Recently I had my 5i25 card fail and bought a 7i92TM to replace it, updating my HAL file to suit the new ethernet board.
LinuxCNC runs as normal, however, the spindle index pulse is no longer being recognised. The index pulse was detected and rigid tapping worked when I had th 5i25 card installed. I have not made any changes to the HAL file in regards to the encoder.

I confirmed with an oscilloscope the encoder is outputting the index pulse.
Halscope will detect the A and B pulses but not the index pulse.
The index pulse is not detected in either LinuxCNC 2.8.0 nor 2.9.4 (rigid tapping just hangs)

Is there something I am missing in my HAL file or is there a timming error in which the encoder pulse is not being read by the 7i92tm? 

Thanks a ton to all of you: jjdege, Billiiles !!!

Off course your hints were pointing into the right direction. I just had to go further than I thought I had to.
In short:
- added debounce
- increased debounce.0.delay

That was it!

I have manual tool change, prompting me for the tool required, hit OK, after change and then it measures tool length automatically. So happy!

Along the welcomed outcome, I stumbled across several problems. I'll wrap up my notes and write a comprehensive howto in due time.

Greez
a so happy chris