#include <Arduino.h>


/*
 DESCRIPTION
 ====================
 Simple example of the Bounce library that switches the debug LED when a button is pressed.
 */
// Include the Bounce2 library found here :
// https://github.com/thomasfredericks/Bounce2
#include <Bounce2.h>


#define LED_PIN 21

// Instantiate a Bounce object
Bounce debouncer = Bounce();

void setup() {
  Serial.begin(115200);


  // After setting up the button, setup the Bounce instance :
  debouncer.attach(T7);
  debouncer.interval(5); // interval in ms

  //Setup the LED :
  pinMode(21,OUTPUT);

}
int ledState = LOW;
void loop() {
  // Update the Bounce instance :
  debouncer.update();

  // Get the updated value :
  int value = debouncer.read();

  // Turn on or off the LED as determined by the state :
  if ( debouncer.fell() ) {

    // Toggle LED state :
    ledState = !ledState;
    digitalWrite(LED_PIN,ledState);

  }
}