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<p class='vspace'></p><h2>delayMicroseconds()</h2>
<h4>Description</h4>
<p>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.
</p>
<p class='vspace'></p><p>Currently, the largest value that will produce an accurate delay is 16383. This could change in future Arduino releases. For delays longer than a few thousand microseconds, you should use delay() instead.
</p>
<p class='vspace'></p><h4>Syntax</h4>
<p>delayMicroseconds(us)
</p>
<p class='vspace'></p><h4>Parameters</h4>
<p>us: the number of microseconds to pause (<em>unsigned int</em>)
</p>
<p class='vspace'></p><h4>Returns</h4>
<p>None
</p>
<p class='vspace'></p><h4>Example</h4>
<pre>
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
}
</pre>
<p class='vspace'></p><p>configures pin number 8 to work as an output pin. It sends a train of pulses with 100 microseconds period.
</p>
<p class='vspace'></p><h4>Caveats and Known Issues</h4>
<p>This function works very accurately in the range 3 microseconds and up. We cannot assure that delayMicroseconds will perform precisely for smaller delay-times.
</p>
<p class='vspace'></p><p>As of Arduino 0018, delayMicroseconds() no longer disables interrupts.
</p>
<p class='vspace'></p><h4>See also</h4>
<ul><li><a class='wikilink' href='Millis.html'>millis</a>()
</li><li><a class='wikilink' href='Micros.html'>micros</a>()
</li><li><a class='wikilink' href='Delay.html'>delay</a>()
</li></ul><p class='vspace'></p><p><a class='wikilink' href='index.html'>Reference Home</a>
</p>
<p class='vspace'></p><p><em>Corrections, suggestions, and new documentation should be posted to the <a class='urllink' href='http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?board=swbugs' rel='nofollow'>Forum</a>.</em>
</p>
<p class='vspace'></p><p>The text of the Arduino reference is licensed under a
<a class='urllink' href='http://creativecommons.org/licenses/by-sa/3.0/' rel='nofollow'>Creative Commons Attribution-ShareAlike 3.0 License</a>. Code samples in the reference are released into the public domain.
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