StateChangeDetection - /* State change detection (edge...

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/* State change detection (edge detection) Often, you don't need to know the state of a digital input all the time, but you just need to know when the input changes from one state to another. For example, you want to know when a button goes from OFF to ON. This is called state change detection, or edge detection. This example shows how to detect when a button or button changes from off to on and on to off. The circuit: * pushbutton attached to pin 2 from +5V * 10K resistor attached to pin 2 from ground * LED attached from pin 13 to ground (or use the built-in LED on most Arduino boards) created 27 Sep 2005 modified 30 Dec 2009 by Tom Igoe This example code is in the public domain. http://arduino.cc/en/Tutorial/ButtonStateChange */ // this constant won't change: const int buttonPin = 2; // the pin that the pushbutton is attached to const int ledPin = 13; // the pin that the LED is attached to c // Variables will change: int buttonPushCounter = 0; // counter for the number of button presses
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This note was uploaded on 01/31/2011 for the course CS 302 taught by Professor J.parker during the Spring '08 term at University of Texas at Austin.

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StateChangeDetection - /* State change detection (edge...

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