Olin Lathrop wrote:
> Andre Abelian wrote:
>> Lets say to measure each period I still need to setup a fixed time
>> right?
>
> No, you set up a free running counter that is incremented at a fixed know=
n
> rate. =A0On smaller PICs like a PIC 16, this will be timer 1. =A0The CCP =
module
> then captures a snapshot of timer 1 whenever a pulse comes in. =A0In the =
CCP
> interrupt, you subtract the new reading minus the previous reading to get
> the timer counts between them.
>

That's a good point. And you could take not the first previous
reading, but also, say, N-th previous reading, depending on the
mechanical properties of the system. This would average readings on
last N values.

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