Frequency Measurement


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matherp
Guru

Joined: 11/12/2012
Location: United Kingdom
Posts: 3388
Posted: 09:57pm 20 Jun 2018      

  Quote  The crystals I measure go up-to 27MHz so not sure how to make the MM measure that.


I think this is possible by using the frequency as input to one of the PIC's timers and then reading the timer at intervals. I believe it could be done with a CFunction. Of course you will need a trivial circuit to convert the crystal output to a TTL signal as input to the timer