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< div class = "title" > bounce_basic.ino< / div > < / div >
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< p > Basic example of the < a class = "el" href = "class_bounce.html" title = "The Debouncer:Bounce class. Links the Deboucing class to a hardware pin. This class is odly named,..." > Bounce< / a > class.< / p >
< div class = "fragment" > < div class = "line" > < / div >
< div class = "line" > /*< / div >
< div class = "line" > DESCRIPTION< / div >
< div class = "line" > ====================< / div >
< div class = "line" > Simple example of the Bounce library that switches a LED when< / div >
< div class = "line" > a state change (from HIGH to LOW) is triggered (for example when a button is pressed).< / div >
< div class = "line" > < / div >
< div class = "line" > Set BOUNCE_PIN to the pin attached to the input (a button for example).< / div >
< div class = "line" > Set LED_PIN to the pin attached to a LED.< / div >
< div class = "line" > < / div >
< div class = "line" > */< / div >
< div class = "line" > < / div >
< div class = "line" > // WE WILL attach() THE Bounce INSTANCE TO THE FOLLOWING PIN IN setup()< / div >
< div class = "line" > #define BOUNCE_PIN 2< / div >
< div class = "line" > < / div >
< div class = "line" > // DEFINE THE PIN FOR THE LED :< / div >
< div class = "line" > // 1) SOME BOARDS HAVE A DEFAULT LED (LED_BUILTIN)< / div >
< div class = "line" > #define LED_PIN LED_BUILTIN< / div >
< div class = "line" > // 2) OTHERWISE SET YOUR OWN PIN< / div >
< div class = "line" > // #define LED_PIN 13< / div >
< div class = "line" > < / div >
< div class = "line" > // Include the Bounce2 library found here :< / div >
< div class = "line" > // https://github.com/thomasfredericks/Bounce2< / div >
< div class = "line" > #include < Bounce2.h> < / div >
< div class = "line" > < / div >
< div class = "line" > < / div >
< div class = "line" > // INSTANTIATE A Bounce OBJECT< / div >
< div class = "line" > Bounce bounce = Bounce();< / div >
< div class = "line" > < / div >
< div class = "line" > // SET A VARIABLE TO STORE THE LED STATE< / div >
< div class = "line" > int ledState = LOW;< / div >
< div class = "line" > < / div >
< div class = "line" > void setup() {< / div >
< div class = "line" > < / div >
< div class = "line" > // BOUNCE SETUP< / div >
< div class = "line" > < / div >
< div class = "line" > // SELECT ONE OF THE FOLLOWING :< / div >
< div class = "line" > // 1) IF YOUR INPUT HAS AN INTERNAL PULL-UP< / div >
< div class = "line" > bounce.attach( BOUNCE_PIN , INPUT_PULLUP ); // USE INTERNAL PULL-UP< / div >
< div class = "line" > // 2) IF YOUR INPUT USES AN EXTERNAL PULL-UP< / div >
< div class = "line" > //bounce.attach( BOUNCE_PIN, INPUT ); // USE EXTERNAL PULL-UP< / div >
< div class = "line" > < / div >
< div class = "line" > // DEBOUNCE INTERVAL IN MILLISECONDS< / div >
< div class = "line" > bounce.interval(5); // interval in ms< / div >
< div class = "line" > < / div >
< div class = "line" > // LED SETUP< / div >
< div class = "line" > pinMode(LED_PIN, OUTPUT);< / div >
< div class = "line" > digitalWrite(LED_PIN, ledState);< / div >
< div class = "line" > < / div >
< div class = "line" > }< / div >
< div class = "line" > < / div >
< div class = "line" > void loop() {< / div >
< div class = "line" > // Update the Bounce instance (YOU MUST DO THIS EVERY LOOP)< / div >
< div class = "line" > bounce.update();< / div >
< div class = "line" > < / div >
< div class = "line" > // < Bounce> .changed() RETURNS true IF THE STATE CHANGED (FROM HIGH TO LOW OR LOW TO HIGH)< / div >
< div class = "line" > if ( bounce.changed() ) {< / div >
< div class = "line" > // THE STATE OF THE INPUT CHANGED< / div >
< div class = "line" > // GET THE STATE< / div >
< div class = "line" > int deboucedInput = bounce.read();< / div >
< div class = "line" > // IF THE CHANGED VALUE IS LOW< / div >
< div class = "line" > if ( deboucedInput == LOW ) {< / div >
< div class = "line" > ledState = !ledState; // SET ledState TO THE OPPOSITE OF ledState< / div >
< div class = "line" > digitalWrite(LED_PIN,ledState); // WRITE THE NEW ledState< / div >
< div class = "line" > }< / div >
< div class = "line" > }< / div >
< div class = "line" > < / div >
< div class = "line" > < / div >
< div class = "line" > < / div >
< div class = "line" > }< / div >
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