// Segment pins: A-G
int segPins[7] = {2, 3, 4, 5, 6, 7, 8};
// RGB pins
const int redPin = 9;
const int greenPin = 10;
const int bluePin = 11;

// Number to 7-segment encoding (0–9)
// Order: A B C D E F G
byte digits[10][7] = {
  {1,1,1,1,1,1,0}, // 0
  {0,1,1,0,0,0,0}, // 1
  {1,1,0,1,1,0,1}, // 2
  {1,1,1,1,0,0,1}, // 3
  {0,1,1,0,0,1,1}, // 4
  {1,0,1,1,0,1,1}, // 5
  {1,0,1,1,1,1,1}, // 6
  {1,1,1,0,0,0,0}, // 7
  {1,1,1,1,1,1,1}, // 8
  {1,1,1,1,0,1,1}  // 9
};


int cycle = 0; // 0: red, 1: green, 2: blue

void setup() {
  for (int i = 0; i < 7; i++) {
    pinMode(segPins[i], OUTPUT);
  }
  pinMode(redPin, OUTPUT);
  pinMode(greenPin, OUTPUT);
  pinMode(bluePin, OUTPUT);

  updateLED(); // Set initial RGB color
}

void loop() {
  for (int i = 0; i <= 9; i++) {
    displayDigit(i);
    delay(1000); // Wait 1 second
  }
  // After 0–9, change cycle
  cycle = (cycle + 1) % 3;
  updateLED();
}
void displayDigit(int num) {
  for (int i = 0; i < 7; i++) {
    digitalWrite(segPins[i], digits[num][i]);
  }
}
void updateLED() {
  // Turn off all first
  digitalWrite(redPin, LOW);
  digitalWrite(greenPin, LOW);
  digitalWrite(bluePin, LOW);

  if (cycle == 0)
    digitalWrite(redPin, HIGH);
  else if (cycle == 1)
    digitalWrite(greenPin, HIGH);
  else if (cycle == 2)
    digitalWrite(bluePin, HIGH);
}