In SX Microcontrollers, SX/B Compiler and SX-Key Tool, bennettdan wrote:

I have looked at the Count instruction and if I wanted to mesure RPM would this work?
 

Hertz VAR   Word

RPM   VAR   Word 

 

Do

Count RB.0, 250, Hertz

RPM = Hertz * 240

Loop

 

Or should you sample the input longer say 1000 ms? Would it be accurate at 250 ms sample?

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