#include <SevSeg.h>


SevSeg Sveg;
uint16_t c = -93;

void setup() {
  TCCR1A = 0;
  TCCR1B = 0;
  bitSet(TCCR1B, CS11);
  bitSet(TCCR1B, CS10);

  bitSet(TIMSK1, TOIE1);
  byte hardwareConfig = COMMON_CATHODE;
  byte numDigits = 4;
  byte digitPins[] = {19, 18, 17, 20};
  byte segmentPins[] = {2, 3, 4, 5, 6, 7, 8, 9};
  bool resistorsOnSegments = true;
  bool updateWithDelays = false;
  bool leadingZeros = false;
  bool disableDecPoint = false;


  Sveg.begin(hardwareConfig, numDigits, digitPins,
             segmentPins, resistorsOnSegments,
             updateWithDelays, leadingZeros,
             disableDecPoint);
  Sveg.blank();
}

ISR(TIMER1_OVF_vect) {
  c++;
 
}



void loop() {
  char str[10];
  snprintf(str, sizeof(str), "%d", c);
  strcat(str, "*");
  Sveg.setChars(str);
  Sveg.refreshDisplay();
  

}