How to measure the speed of an Arduino function's execution?
arduino, c++, measurement, stopwatch, time
Solution
A straightforward way is to use the `millis()` or `micros()` function in the Arduino library. You will have a finer grain result with `micros()`.
For instance:
unsigned long start = micros();
// Call to your function
myFunction();
// Compute the time it took
unsigned long end = micros();
unsigned long delta = end - start;
Serial.println(delta);
Read carefully the documentation of `micros()`: there are some information about the time resolution.
Problem
I need to determine the speed with which Arduino executes a certain function. What would be the best time to do that? So far I found something with a Stopwatch class, but I'm wondering if there's any native method to do that.