Home Page | Language Reference (extended) | SD Reference | Libraries | Comparison | Changes
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.
Note: there are 1,000 microseconds in a millisecond and 1,000,000 microseconds in a second.
None
Number of microseconds since the program started (unsigned long)
unsigned long time;void setup(){Serial.begin(9600);}void loop(){Serial.print("Time: ");time = micros();//prints time since program startedSerial.println(time);// wait a second so as not to send massive amounts of datadelay(1000);}
Corrections, suggestions, and new documentation should be posted to the Forum.
The text of the Arduino reference is licensed under a Creative Commons Attribution-ShareAlike 3.0 License. Code samples in the reference are released into the public domain.