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