// Pin mapping for 7-segment display (for common cathode)
const int segmentPins[] = {2, 3, 4, 5, 6, 7, 8};  // A, B, C, D, E, F, G
const int digitPins[] = {9, 10, 11};          // DIG1, DIG2, DIG3

// Segment patterns for numbers 0-9
const byte digits[10] = {
  B00111111, // 0
  B00000110, // 1
  B01011011, // 2
  B01001111, // 3
  B01100110, // 4
  B01101101, // 5
  B01111101, // 6
  B00000111, // 7
  B01111111, // 8
  B01101111  // 9
};

void setupDisplay();
void displayNumber(int number);

//Different number for each digits------------------
/*
// Array to hold the numbers to display on each digit
int displayNumbers[4] = {1, 7, 9, 3}; // Change these numbers to whatever you want to display

void setup() {
  setupDisplay(); // Call the setup function for the display
}

void loop() {
  // Continuously display the numbers on each digit
  displayNumbersOnAllDigits();
}

// Function to setup the display
void setupDisplay() {
  // Set segment pins as output
  for (int i = 0; i < 7; i++) {
    pinMode(segmentPins[i], OUTPUT);
  }

  // Set digit pins as output
  for (int i = 0; i < 4; i++) {
    pinMode(digitPins[i], OUTPUT);
  }

  // Turn off all digits initially
  for (int i = 0; i < 4; i++) {
    digitalWrite(digitPins[i], HIGH); // HIGH turns off the digit (for common cathode)
  }
}

// Function to display different numbers on each digit without turning off
void displayNumbersOnAllDigits() {
  for (int i = 0; i < 4; i++) {  // Loop through each digit
    int number = displayNumbers[i];  // Get the number for the current digit
    byte segments = digits[number];  // Get segment pattern for the number
    
    // Set the segments for the current number
    for (int j = 0; j < 7; j++) {
      digitalWrite(segmentPins[j], (segments >> j) & 0x01);  // Set segments
    }
    
    // Activate only the current digit
    digitalWrite(digitPins[i], LOW);  // LOW to turn on the current digit (for common cathode)
    
    // Short delay to allow the digit to stay on (but very quick to simulate being always on)
    delay(2);  // 2ms delay should make it fast enough to appear as if all digits are on
    
    // Turn off the current digit before moving to the next
    digitalWrite(digitPins[i], HIGH); // HIGH turns off the digit
  }
}
*/

//Set all digits to same number------------------
/*
// Variable to hold the number to display
int displayNumberToShow = 7; // Change this to the number you want to display

void setup() {
  setupDisplay(); // Call the setup function for the display
}

void loop() {
  // Display the specific number on all digits
  displayNumber(displayNumberToShow);

  delay(1000); // Delay for a second to see the number
}

// Function to setup the display
void setupDisplay() {
  // Set segment pins as output
  for (int i = 0; i < 7; i++) {
    pinMode(segmentPins[i], OUTPUT);
  }

  // Set digit pins as output
  for (int i = 0; i < 4; i++) {
    pinMode(digitPins[i], OUTPUT);
  }

  // Turn off all digits initially
  for (int i = 0; i < 4; i++) {
    digitalWrite(digitPins[i], HIGH);
  }
}

// Function to display the same number across all digits
void displayNumber(int number) {
  byte segments = digits[number];  // Get segment pattern for the number
  
  // Set the segments for the current number
  for (int j = 0; j < 7; j++) {
    digitalWrite(segmentPins[j], (segments >> j) & 0x01);  // Set segments
  }

  // Activate all digits simultaneously to show the number
  for (int i = 0; i < 4; i++) {  // Display on all four digits
    digitalWrite(digitPins[i], LOW);  // LOW to turn on the current digit (for common cathode)
  }
}
*/

//Count 1-9------------------
/*
// Variables to hold the count value
int count = 0;

void setup() {
  // Set segment pins as output
  for (int i = 0; i < 7; i++) {
    pinMode(segmentPins[i], OUTPUT);
  }

  // Set digit pins as output
  for (int i = 0; i < 4; i++) {
    pinMode(digitPins[i], OUTPUT);
  }

  // Turn off all digits initially
  for (int i = 0; i < 4; i++) {
    digitalWrite(digitPins[i], HIGH);
  }
}

void loop() {
  // Display the count value on all digits
  displayNumber(count);

  // Wait for 1 second before updating the display
  delay(1000);
  
  // Increment the count and wrap around from 0 to 9
  count = (count + 1) % 10;
}

// Function to display the same number across all digits
void displayNumber(int number) {
  byte segments = digits[number];  // Get segment pattern for the number
  
  // Turn off all digits before updating the current one
  for (int j = 0; j < 4; j++) {
    digitalWrite(digitPins[j], HIGH);  // Turn off all digits
  }

  // Set the segments for the current number
  for (int j = 0; j < 7; j++) {
    digitalWrite(segmentPins[j], (segments >> j) & 0x01);  // Set segments
  }

  // Activate all digits simultaneously to show the number
  for (int i = 0; i < 4; i++) {
    digitalWrite(digitPins[i], LOW);  // LOW to turn on the current digit (for common cathode)
  }

  // Small delay to allow the display to be visible
  delay(5);
}
*/