#include "SevSeg.h"

// Create object
SevSeg sevseg;

// Number of digits in display
byte numDigits = 4;
// Display select pins
byte digitPins[] = {13, 10, 12, 11};
// Display segment pins A,B,C,D,E,F,G,DP
byte segmentPins[] = {9, 2, 3, 5, 6, 8, 7, 4};
// Dropping resistors used
bool resistorsOnSegments = true;
// Display type
byte hardwareConfig = COMMON_CATHODE;

void setup() {
  // Start display object
  sevseg.begin(hardwareConfig, numDigits, digitPins, segmentPins, resistorsOnSegments);
  // Set brightness
  sevseg.setBrightness(90);
}

void loop() {
  // Test each segment in sequence
  for (byte segment = 0; segment < 8; segment++) {
    for (byte digit = 0; digit < numDigits; digit++) {
      testSegment(segment, digit);
      delay(1000);
    }
  }
}

// Helper function to display a single segment on a single digit
void testSegment(byte segment, byte digit) {
  byte segments[numDigits] = {0};  // Array to hold segment states for all digits
  segments[digit] = 1 << segment;  // Turn on the specific segment for the specific digit
  sevseg.setSegments(segments);  // Update the segment on the specific digit
  sevseg.refreshDisplay();
}