Frequency/Pulse Measurement

[system]

Yes, they will melt down and explode. NOT.

You can call millis() inside an ISR however it will not increment.

You can call micros() and it will increment, however don't do that for more than 1 mS.

Your ISR routines should be short.

Gammon Forum : Electronics : Microprocessors : Interrupts

Okay good to know!

I'm going to have to think of some way to record the time it takes between interrupts no so I can record the anemometer wind speed :S