#include <Arduino.h>

const int numLDRs = 6;  // Number of LDRs
const int ldrPins[] = {A0, A1, A2, A3, A4, A5};  // Analog pins for LDRs

// Calibration data for each LDR
const int calibrationValues[] = {100, 200, 300, 400, 500, 600};  // Lux values at analogRead = 500

// Constants for automatic calibration
const int calibrationSamples = 100;  // Number of samples for calibration
int calibrationThreshold = 500;       // Initial threshold for calibration
int calibrationDelay = 5000;          // Delay for calibration in milliseconds

void setup() {
  Serial.begin(9600);  // Initialize serial communication

  // Set up LDR pins as inputs
  for (int i = 0; i < numLDRs; i++) {
    pinMode(ldrPins[i], INPUT);
  }
}

// Function to convert analog reading to lux value
float analogToLux(int analogValue, int calibrationValue) {
  // You need to determine the formula based on LDR characteristics
  // This is a simple linear approximation
  float lux = analogValue * (calibrationValue / 500.0);  // Adjust 500 as your reference value
  return lux;
}

// Function to perform automatic calibration
void autoCalibrate() {
  Serial.println("Starting automatic calibration...");
  int calibrationSum = 0;

  for (int i = 0; i < calibrationSamples; i++) {
    for (int j = 0; j < numLDRs; j++) {
      calibrationSum += analogRead(ldrPins[j]);
    }
    delay(10);  // Delay between samples
  }

  calibrationThreshold = calibrationSum / (calibrationSamples * numLDRs);
  Serial.print("Calibration complete. Threshold set to: ");
  Serial.println(calibrationThreshold);
  Serial.println("Place objects to calibrate ambient light levels.");
  delay(calibrationDelay);
}

void loop() {
  // Check for automatic calibration button press (e.g., a physical button)
  // If the button is pressed, perform auto-calibration
  // This is just a placeholder for the button press detection.
  // You may need to implement the button detection mechanism.
  if (digitalRead(2) == HIGH) {  // Change to the actual pin you're using for the button
    autoCalibrate();
  }

  // Read the LDR values and display lux values
  for (int i = 0; i < numLDRs; i++) {
    int ldrValue = analogRead(ldrPins[i]);
    float luxValue = analogToLux(ldrValue, calibrationValues[i]);

    Serial.print("Plate ");
    Serial.print(i + 1);
    Serial.print(": ");
    Serial.print(luxValue, 2);  // Display lux values with two decimal places
    Serial.println(" Lux");
  }

  delay(1000);  // Delay to prevent rapid readings (adjust as needed)
}


// BINARY BITS VALUE IN 6 PLATES

// const int numLDRs = 6;   // Number of LDRs
// const int ldrPins[] = {A0, A1, A2, A3, A4, A5}; // Analog pins for LDRs

// void setup() {
//   Serial.begin(9600); // Initialize serial communication

//   // Set up LDR pins as inputs
//   for (int i = 0; i < numLDRs; i++) {
//     pinMode(ldrPins[i], INPUT);
//   }
// }

// void loop() {
//   // Read the LDR values and display 1 or 0 based on light detection
//   for (int i = 0; i < numLDRs; i++) {
//     int ldrValue = analogRead(ldrPins[i]);
    
//     if (ldrValue > 500) { // You may need to adjust this threshold value
//       Serial.print("Plate ");
//       Serial.print(i + 1);
//       Serial.println(": 1");
//     } else {
//       Serial.print("Plate ");
//       Serial.print(i + 1);
//       Serial.println(": 0");
//     }
//   }

//   delay(1000); // Delay to prevent rapid readings (adjust as needed)
// }