/*
* This ESP32 code is created by esp32io.com
*
* This ESP32 code is released in the public domain
*
* For more detail (instruction and wiring diagram), visit https://esp32io.com/tutorials/esp32-light-sensor
*/

#define LIGHT_SENSOR_PIN 36 // day night detection ESP32 pin GIOP36 vp pin (ADC0)
#define LIGHT_SENSOR_PIN_A 39 // ESP32 pin vn     fault detction
#define LIGHT_SENSOR_PIN_B 34 // ESP32 pin 34     fault detction
//#define LIGHT_SENSOR_PIN_C 35 // ESP32 pin 35     fault detction
//#define LIGHT_SENSOR_PIN_D 32 // ESP32 pin 32     fault detction

const int ledPin4 = 18; // 16 corresponds to GPIO16
const int ledPin5 = 19; // 16 corresponds to GPIO16
//const int ledPin6 = 21; // 16 corresponds to GPIO16
//const int ledPin7 = 3; // rx pin

// setting PWM properties
const int freq = 5000;
const int ledChannel = 0;
const int resolution = 8;

void setup() {
  // initialize serial communication at 9600 bits per second:
  Serial.begin(9600);

  // configure LED PWM functionalitites
ledcSetup(ledChannel, freq, resolution);

// attach the channel to the GPIO to be controlled
ledcAttachPin(ledPin4, ledChannel);
ledcAttachPin(ledPin5, ledChannel);
//ledcAttachPin(ledPin6, ledChannel);
//ledcAttachPin(ledPin7, ledChannel);
}


void loop() {
  // reads the input on analog pin (value between 0 and 4095)
  int analogValue = analogRead(LIGHT_SENSOR_PIN);

  //Serial.print("Analog Value = ");
  //Serial.print(analogValue);   // the raw analog reading

  // We'll have a few threshholds, qualitatively determined
  if (analogValue < 500) {
    Serial.println("                                        =>Night time");
    for(int dutyCycle =240 ; dutyCycle <= 255; dutyCycle++)
    {
    // changing the LED brightness with PWM
    ledcWrite(ledChannel, dutyCycle);
    delay(5);
    }

//fault detection logic
  // reads the input on analog pin (value between 0 and 4095)
  int analogValue_A = analogRead(LIGHT_SENSOR_PIN_A);
  int analogValue_B = analogRead(LIGHT_SENSOR_PIN_B);
  //int analogValue_C = analogRead(LIGHT_SENSOR_PIN_C);
  //int analogValue_D = analogRead(LIGHT_SENSOR_PIN_D);

  /*Serial.print("\nAnalog Value A = ");
  Serial.print(analogValue_A);   // the raw analog reading
  Serial.print("\nAnalog Value B = ");
  Serial.print(analogValue_B);   // the raw analog reading
  Serial.print("\nAnalog Value C = ");
  Serial.print(analogValue_C);   // the raw analog reading
  Serial.print("\nAnalog Value D = ");
  Serial.print(analogValue_D);   // the raw analog reading*/  

  //particular lamp fault detection
  
    if (analogValue_A < 2400){ 
    Serial.println(" \n=> fault on lamp A !!!");
  } else if (analogValue_B < 2400) {
    Serial.println(" \n=> fault on lamp B !!!");
  }/* else if (analogValue_C < 2100) {
    Serial.println(" \n=> fault on lamp C !!!");
  } else if (analogValue_D < 2400) {
    Serial.println(" \n=> fault on lamp D !!!");
  } */
    else {
    Serial.println(" => All lamps are good");
     }
  delay(310);

 
}

    else {
    Serial.println("                                         =>Day time");
    // decrease the LED brightness
    for(float dutyCycle = 0.3; dutyCycle >= 0; dutyCycle--)
    {
    // changing the LED brightness with PWM
    ledcWrite(ledChannel, dutyCycle);
    delay(1);
    }
  }

  delay(10);
}