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Update pulseIn.adoc #977

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18 changes: 18 additions & 0 deletions Language/Functions/Advanced IO/pulseIn.adoc
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Expand Up @@ -74,6 +74,24 @@ void loop() {
----
[%hardbreaks]


[float]
=== Notes and Warnings
Note that interrupts can affect the measured time reported by this function. When measuring relatively short pulses, you may need to temporarily disable interrupts (see link:../Interrupts/noInterrupts[noInterrupts()]) to obtain accurate and consistent results. For example,

[source,arduino]
----
void loop() {
noInterrupts();
duration = pulseIn(pin, HIGH);
interrupts();

Serial.println(duration);
}
----
[%hardbreaks]


--
// HOW TO USE SECTION ENDS

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