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.
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.