#include <Adafruit_Circuit_Playground.h>
#include <Adafruit_CircuitPlayground.h>

volatile bool leftState = false, rightState = false;

void left()
{
    if (CircuitPlayground.leftButton())
        leftState = !leftState;
}

void right()
{
    if (CircuitPlayground.rightButton())
        rightState = !rightState;
}

void setup()
{
    CircuitPlayground.begin();
    Serial.begin(9600);

    attachInterrupt(digitalPinToInterrupt(4), left, CHANGE);
    attachInterrupt(digitalPinToInterrupt(5), right, CHANGE);
}


void loop()
{
    Serial.print(leftState);
    Serial.print("t");
    Serial.print(rightState);
    Serial.print("n");
}