[Time]
Description
Pauses the program for the amount of time (in microseconds) specified as parameter. There are a thousand microseconds in a millisecond, and a million microseconds in a second.
Currently, the largest value that will produce an accurate delay is about 4000000. This could change in future 86Duino releases. For delays longer than a few seconds, you should use delay()
instead.
Syntax
delayMicroseconds(us)
Parameters
us
: the number of microseconds to pause (unsigned int)
Returns
None
Example Code
int outPin = 8; // digital pin 8 void setup() { pinMode(outPin, OUTPUT); // sets the digital pin as output } void loop() { digitalWrite(outPin, HIGH); // sets the pin on delayMicroseconds(50); // pauses for 50 microseconds digitalWrite(outPin, LOW); // sets the pin off delayMicroseconds(50); // pauses for 50 microseconds }
configures pin number 8 to work as an output pin. It sends a train of pulses with 100 microseconds period.
Caveats and Known Issues
In general, this function works accurately in the range 1 microsecond and up. But since delayMicroseconds()
doesn’t disable interrupts, we cannot assure that it will always perform precisely for smaller delay-times.
See also
Language Reference Home
The text of the 86Duino reference is a modification of the Arduino reference and is licensed under a Creative Commons Attribution-ShareAlike 3.0 License. Code samples in the reference are released into the public domain.