#include <pins_arduino.h> // ESP32 pin definitions

// Segment pin mappings
const int SEG_A = 2;
const int SEG_B = 3;
const int SEG_C = 4;
const int SEG_D = 5;
const int SEG_E = 6;
const int SEG_F = 7;
const int SEG_G = 8;
//const int DP = 9; // Decimal point (optional)

// Digit pin mappings (common cathode)
const int DIG1 = 10;
const int DIG2 = 11;
const int DIG3 = 12;
const int DIG4 = 13;

// Segment patterns for digits (0-9, optional decimal point)
const byte digitPatterns[10] = 
{
  B01111110, B00110000, B10111011, B10011111, 
  B01001101, B01100101, B11100011, B00001111, 
  B00111111, B01011111
};

// Function to display a single digit on a specific segment
void displayDigit(int digit, int segment) 
{
  digitalWrite(segment, digit & (1 << segment));
}

// Function to display a single digit on the specified position
void displayNumber(int num, int position) 
{
  byte pattern = digitPatterns[num];
  displayDigit(pattern, SEG_A);
  displayDigit(pattern, SEG_B);
  displayDigit(pattern, SEG_C);
  displayDigit(pattern, SEG_D);
  displayDigit(pattern, SEG_E);
  displayDigit(pattern, SEG_F);
  displayDigit(pattern, SEG_G);
  // Optional decimal point control
  // displayDigit(pattern, DP);
  
  // Turn off unused digits
  switch (position)
  {
    case 1:
      digitalWrite(DIG2, 0);
      digitalWrite(DIG3, 0);
      digitalWrite(DIG4, 0);
      break;
    case 2:
      digitalWrite(DIG1, 0);
      digitalWrite(DIG3, 0);
      digitalWrite(DIG4, 0);
      break;
    case 3:
      digitalWrite(DIG1, 0);
      digitalWrite(DIG2, 0);
      digitalWrite(DIG4, 0);
      break;
    case 4:
      digitalWrite(DIG1, 0);
      digitalWrite(DIG2, 0);
      digitalWrite(DIG3, 0);
      break;
  }
}

void setup() 
{
  // Set all segment and digit pins as outputs
  pinMode(SEG_A, OUTPUT);
  pinMode(SEG_B, OUTPUT);
  pinMode(SEG_C, OUTPUT);
  pinMode(SEG_D, OUTPUT);
  pinMode(SEG_E, OUTPUT);
  pinMode(SEG_F, OUTPUT);
  pinMode(SEG_G, OUTPUT);
 // pinMode(DP, OUTPUT); // Optional
  pinMode(DIG1, OUTPUT);
  pinMode(DIG2, OUTPUT);
  pinMode(DIG3, OUTPUT);
  pinMode(DIG4, OUTPUT);
}

void loop() 
{
  // Example: Display number 1234
  displayNumber(1, 1);
  displayNumber(2, 2);
  displayNumber(3, 3);
  displayNumber(4, 4);
  
  // Add more functionalities here
  // ...
}