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--- oak:tutorials:button [2016/03/20 05:00]
djflix Fixed the non-interrupt example
+++ oak:tutorials:button [2016/03/20 05:12]
djflix
@@ Line 36: / Line 36: @@
   * HIGH (pin is high)
-It's important to note that an Interrupt actually interrupts what you're doing! So keep your interrupt handlers as simple as possible. Otherwise they might interfere with other time-sensitive operations.
+In interrupt will interrupt anything the microcontroller is doing (even if it is in the middle of a function!) but will return after executing the interrupt handler. See some example of a good and a bad handleButtonPress() interrupt handler:
+<code>
+bool event_has_happened = false;
+void good_handleButtonPress() {
+  //set a bool to true so we can handle it in loop()
+  event_has_happened = true;
+}
+void bad_handleButtonPress() {
+  // wait user to release button
+  delay(500);
+  //Handle the button press now so we won't forget it happened!
+  call_another_slow_function();
+}
+</code>
 =====Circuit:=====

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