#include <LiquidCrystal.h>

const int rs=13, en=12, d4=11, d5=10, d6=9, d7=8;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

#define LDR_PIN 2 //wyjscie analogowe
 
// LDR charakterystyka
const float GAMMA = 0.7;
const float RL10 = 50;

// Diodki
int gran = 0;
int braz = 1;
int czer = 2;
int ziel = 3;
int nieb = 4;
int poma = 5;
int roci = 6;
int zolt = 7;

void setup(){
  lcd.begin(20,4);
  lcd.home();

           //wejście LDR
  pinMode(LDR_PIN, INPUT); 

  //Diodki - wyjście
  pinMode(gran, OUTPUT);
  pinMode(braz, OUTPUT);
  pinMode(czer, OUTPUT);
  pinMode(ziel, OUTPUT);
  pinMode(nieb, OUTPUT);
  pinMode(poma, OUTPUT);
  pinMode(roci, OUTPUT);
  pinMode(zolt, OUTPUT);
}
  void loop(){
    //Obliczanie lux'ów
  int analogValue = analogRead(A0);
  float voltage = analogValue / 1024. * 5;
  float resistance = 2000 * voltage / (1 - voltage / 5);
  float lux = pow(RL10 * 1e3 * pow(10, GAMMA) / resistance, (1 / GAMMA));
  
  //       Opis wyświetlacza 
  lcd.setCursor(0, 0);
  lcd.print("--------------------");
  lcd.setCursor(6, 1);
  lcd.print("Pomiar : ");
  lcd.setCursor(4, 2);
  lcd.print(lux);
  lcd.setCursor(14, 2);
  lcd.print("lux'a");
  lcd.setCursor(0, 3);
  lcd.print("--------------------");
  //     Koniec opisu wyświetlacza

  // Diodki offs
    digitalWrite(gran, LOW);
    digitalWrite(braz, LOW);
    digitalWrite(czer, LOW);
    digitalWrite(ziel, LOW);
    digitalWrite(nieb, LOW);
    digitalWrite(poma, LOW);
    digitalWrite(roci, LOW);
    digitalWrite(zolt, LOW);

    delay(100);

  if (lux <= 125) {

      //diodki
    digitalWrite(gran, HIGH);
    digitalWrite(braz, LOW);
    digitalWrite(czer, LOW);
    digitalWrite(ziel, LOW);
    digitalWrite(nieb, LOW);
    digitalWrite(poma, LOW);
    digitalWrite(roci, LOW);
    digitalWrite(zolt, LOW);

    //przerwa, czyszczenie ekranu
    delay (100);
    lcd.clear();

    }
  if (lux <=250 && lux >125) {

    digitalWrite(gran, HIGH);
    digitalWrite(braz, HIGH);
    digitalWrite(czer, LOW);
    digitalWrite(ziel, LOW);
    digitalWrite(nieb, LOW);
    digitalWrite(poma, LOW);
    digitalWrite(roci, LOW);
    digitalWrite(zolt, LOW);
    delay (100);
    lcd.clear();

    }
  if (lux <=375 && lux >250) {

    digitalWrite(gran, HIGH);
    digitalWrite(braz, HIGH);
    digitalWrite(czer, HIGH);
    digitalWrite(ziel, LOW);
    digitalWrite(nieb, LOW);
    digitalWrite(poma, LOW);
    digitalWrite(roci, LOW);
    digitalWrite(zolt, LOW);

    delay (100);
    lcd.clear();

    }
  if (lux <=500 && lux >375) {

    digitalWrite(gran, HIGH);
    digitalWrite(braz, HIGH);
    digitalWrite(czer, HIGH);
    digitalWrite(ziel, HIGH);
    digitalWrite(nieb, LOW);
    digitalWrite(poma, LOW);
    digitalWrite(roci, LOW);
    digitalWrite(zolt, LOW);

    delay (100);
    lcd.clear();

    }
 if (lux <=625 && lux >500) {

    digitalWrite(gran, HIGH);
    digitalWrite(braz, HIGH);
    digitalWrite(czer, HIGH);
    digitalWrite(ziel, HIGH);
    digitalWrite(nieb, HIGH);
    digitalWrite(poma, LOW);
    digitalWrite(roci, LOW);
    digitalWrite(zolt, LOW);

    delay (100);
    lcd.clear();

    }
  if (lux <=750 && lux >625) {

    digitalWrite(gran, HIGH);
    digitalWrite(braz, HIGH);
    digitalWrite(czer, HIGH);
    digitalWrite(ziel, HIGH);
    digitalWrite(nieb, HIGH);
    digitalWrite(poma, HIGH);
    digitalWrite(roci, LOW);
    digitalWrite(zolt, LOW);

    delay (100);
    lcd.clear();

    }
  if (lux <=1000 && lux >750) {
    digitalWrite(gran, HIGH);
    digitalWrite(braz, HIGH);
    digitalWrite(czer, HIGH);
    digitalWrite(ziel, HIGH);
    digitalWrite(nieb, HIGH);
    digitalWrite(poma, HIGH);
    digitalWrite(roci, HIGH);
    digitalWrite(zolt, LOW);

    delay (100);
    lcd.clear();

    }
  if (lux >1000) {


    digitalWrite(gran, HIGH);
    digitalWrite(braz, HIGH);
    digitalWrite(czer, HIGH);
    digitalWrite(ziel, HIGH);
    digitalWrite(nieb, HIGH);
    digitalWrite(poma, HIGH);
    digitalWrite(roci, HIGH);
    digitalWrite(zolt, HIGH);

    delay (100);
    lcd.clear();

    }
  }