QEI Hardware Quadrature Encoder Inputs PIC 18F4431

[HenrikOlsson]

Hi Mark,
Did you have the Index input floating?
If so it might pick up noise from the adjacent lines causing the counter to roll over. Anyway, that's not the way you're supposed to have it configured for what you're doing - as you've discovered.

Any chanse you were looking at the first four digits of the POSCNT register(s) and missed the fact that it DID roll over to 65535?
2767 -> (6)5535 -> 0 or 2767 -> 0 -> (6)5535

Anyway, I'm glad you're back up and running.

/Henrik.

[boroko]

Duh! didn't even think about that. Forest for the trees....
Thanks
Mark.