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Period to frequency convertion in pic microcontrollers

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chuzkin

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Hi everyone.

Does anybody have a assembler routine to convert a period in binary (TMR1) to a binay or bcd value? This is the formula f=1/p.
Thanks to all.
 

The fast way is to...

take the logarithm of your number. (Any base)

Subtract from zero (the log of 1). Or change the sign.

Take the antilog.

This gives you the reciprocal of your original number.

It's easier if your pic has a logarithm table.
 

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