#include <OneWire.h>



// Define the pins that are connected to the display.
const int segmentPins[] = {2, 3, 4, 5, 6, 7, 8};
// const int digitSelectPins[] = {9, 10, 11, 12};
const int digitSelectPins[] = {12, 11, 10, 9};



// Define a lookup table that maps each digit to the corresponding segment pattern.
const byte digitPatterns[] = {
  0b00111111, // 0
  0b00000110, // 1
  0b01011011, // 2
  0b01001111, // 3
  0b01100110, // 4 (Note the segment order change here)
  0b01101101, // 5
  0b01111101, // 6
  0b00000111, // 7
  0b01111111, // 8
  0b01101111, // 9
};

// Set up the display.
void setup() {
  // for sensor
  Serial.begin(9600);


  for (int i = 0; i < 7; i++) {
    pinMode(segmentPins[i], OUTPUT);
  }

  for (int i = 0; i < 4; i++) {
    pinMode(digitSelectPins[i], OUTPUT);
  }

  // Set all of the segment pins low.
  for (int i = 0; i < 7; i++) {
    digitalWrite(segmentPins[i], LOW);
  }

  // Set all of the digit select pins high.
  for (int i = 0; i < 4; i++) {
    digitalWrite(digitSelectPins[i], HIGH);
  }
}

// Display the number on the display.
void displayNumber(int number) {
  // Split the number into its individual digits.
  int digits[4];

  for (int i = 0; i < 4; i++) {
    digits[i] = number % 10;
    number /= 10;
  }

  // Display each digit one at a time in reverse order.
  for (int i = 0; i < 4; i++) {
    // Select the digit to display.
    for (int j = 0; j < 4; j++) {
      digitalWrite(digitSelectPins[j], j == i ? LOW : HIGH);
    }
  delay(5);

    // Turn on the segments of the display that correspond to the desired digit.
    for (int j = 0; j < 7; j++) {
      digitalWrite(segmentPins[j], (digitPatterns[digits[i]] >> j) & 1);
    }
    // delay(5);

    // Delay for a short period of time.
    // delay(10);

    //Turn off all segments before moving to the next digit.
     for (int j = 0; j < 7; j++) {
       digitalWrite(segmentPins[j], LOW);
     }
      // delay(10);

  }
      // delay(100);

}

// Loop forever.
void loop() {
  // for sensor
 

  // Display the number 1234 on the display.
  displayNumber(1235);
  // delay(100);

}