Switch on/off every sine pulse

[ChrisHelvey]

I read up a bit on DT's wonderful instant interrupts. How cool is that!? I had heard of it here often but now I see just how powerful that thing is!

I understand that an interrupt can be generated from the comparator using "CMP_INT -- Comparator Interrupt" from his include.

So, conceptually, it is simply comparing to zero volts. Whenever that changes (not zero anymore,) then interrupt. Am I on the right path here?

OR maybe simply using the port change interrupt will work? Hmm, it needs to see a certain voltage before it is considered "on" though, huh?

Here is what I need it to do:
As V rises above zero, generate an interrupt. Then I'll tell the PIC to turn on a pin.
As V falls to zero, generate an (different?) interrupt. Then I'll tell the PIC to turn the above pin off and turn on a different one.

I'm just confused about the rising/falling or comparing part of it.

Anyone have a snippet related? (Is that kind of shameless asking allowed?)

Thanks everyone.

Chris

[sougata]

I read up a bit on DT's wonderful instant interrupts. How cool is that!? I had heard of it here often but now I see just how powerful that thing is!
Chris

The Coolest (greatest) possible extension to PBP Two different version for the x14 and x16 architecture. Very Pro very powerful......Free. DT has done a lot, lot hard work for us.

I understand that an interrupt can be generated from the comparator using "CMP_INT -- Comparator Interrupt" from his include.

The comparator generates an interrupt whenever there is a state change.

Anyone have a snippet related? (Is that kind of shameless asking allowed?)

I intended to give you one. That is why asked for the PIC you would be using.

[ChrisHelvey]

Ah, very good.

I will be working on an 18f4550. I have one here and it should offer what I need.

Thanks SO much in advance.

Chris