Returns the number of microseconds since the Arduino board began running the current program. This number will overflow (go back to zero), after approximately 70 minutes. On 16 MHz Arduino boards (e.g. Duemilanove and Nano), this function has a resolution of four microseconds (i.e. the value returned is always a multiple of four). On 8 MHz Arduino boards (e.g. the LilyPad), this function has a resolution of eight microseconds.
Syntax
time = micros()
Parameters
Nothing
Returns
Returns the number of microseconds since the Arduino board began running the current program.(unsigned long)
Example Code
The code returns the number of microseconds since the Arduino board began.
unsigned long time;
void setup(){
Serial.begin(9600);
}
void loop(){
Serial.print("Time: ");
time = micros();
Serial.println(time); //prints time since program started
delay(1000); // wait a second so as not to send massive amounts of data
}
Notes and Warnings
There are 1,000 microseconds in a millisecond and 1,000,000 microseconds in a second.
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