Hi there,

In addition to performing a multitude of other functions, I want to use
3-Pins of a PIC16F87X to monitor the presence and correct phase rotation
(sequence) of a 3-Phase supply.

Has anybody on the list done this before? Is it best achieved with
interrupts or simply as part of the main loop?

Basically, I need to check for a zero cross in correct order and in a given
period of time. I would also like the code to be "smart enough" to detect if
it is sensing 50Hz or 60Hz and adjust itself accordingly.

If anybody has done anything in this area, I would be glad to hear from
them.

Regards,

Sean Alcorn

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