#include "SevSeg.h"
SevSeg sevseg;

const int buttonPin = 13;
int buttonState = 0;
int lastButtonState = 0;
int count = 0;

void setup() {
  byte numDigits = 1;
  byte digitPins[] = {};
  byte segmentPins[] = {2, 3, 4, 5, 6, 7, 8, 9};
  bool resistorsOnSegments = true;

  byte hardwareConfig = COMMON_CATHODE; 
  sevseg.begin(hardwareConfig, numDigits, digitPins, segmentPins, resistorsOnSegments);
  sevseg.setBrightness(90);

  pinMode(buttonPin, INPUT_PULLUP);
}

void loop() {
  buttonState = digitalRead(buttonPin);

  if (buttonState != lastButtonState) {
    if (buttonState == LOW) {
      count++;
      if (count >= 10) {
        count = 0;
      }
      sevseg.setNumber(count, count%2);
      sevseg.refreshDisplay();
    }
    delay(50);
  }
  lastButtonState = buttonState;
}