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What is the least value of time that I could measure(count) using micros()?

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    What's unclear about the official docs?
    – gre_gor
    Oct 16, 2018 at 18:43
  • Which board? I know you added the arduino-micro tag but I suspect you didn't add that because you're using an Arduino Micro board.
    – per1234
    Oct 17, 2018 at 7:53

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What is the least value of time that I could measure(count) using micro() in Arduino board?

The answer is 64 clock cycles or 4 us @ 16 MHz. Please see the Arduino AVR core[1] for more details.

Cheers!

Ref. [1] https://github.com/arduino/ArduinoCore-avr/blob/master/cores/arduino/wiring.c#L25

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  • is there is any other way to count in nano seconds or 0.05 micro seconds?
    – krishnamoorthi jayakumar
    Oct 26, 2018 at 12:09
  • @krishnamoorthijayakumar yes, by using a Timer and setting the prescaling to 1 (no prescaling). This will give a counter with 62.5 ns per tick @ 16 MHz.
    – Mikael Patel
    Oct 26, 2018 at 20:45
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    Please accept and mark the question as answered!
    – Mikael Patel
    Oct 26, 2018 at 20:45

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