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54 lines
979 B
54 lines
979 B
5 years ago
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/*
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DESCRIPTION
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====================
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Reports through serial (57600 baud) the time since
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a button press (transition from HIGH to LOW).
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*/
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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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#define BUTTON_PIN 2
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#define LED_PIN 13
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// Instantiate a Bounce object :
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Bounce debouncer = Bounce();
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unsigned long buttonPressTimeStamp;
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void setup() {
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Serial.begin(57600);
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// Setup the button with an internal pull-up :
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pinMode(BUTTON_PIN,INPUT_PULLUP);
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// After setting up the button, setup the Bounce instance :
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debouncer.attach(BUTTON_PIN);
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debouncer.interval(5);
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// Setup the LED :
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pinMode(LED_PIN,OUTPUT);
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}
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void loop() {
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// Update the Bounce instance :
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debouncer.update();
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// Call code if Bounce fell (transition from HIGH to LOW) :
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if ( debouncer.fell() ) {;
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Serial.println( millis()-buttonPressTimeStamp );
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buttonPressTimeStamp = millis();
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}
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}
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