#include <Wire.h>
#include <BH1750.h>
#include <dht.h>
#include <avr/sleep.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
dht DHT;
#define DHT11_PIN 15        //on board: 15   DHT11
#define VoltPin 18          //on board: 16   GRENN/BLUE  
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#define OLED_RESET     -1 // Reset pin # (or -1 if sharing Arduino reset pin)
#define SCREEN_ADDRESS 0x3C ///< See datasheet for Address; 0x3D for 128x64, 0x3C for 128x32
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

//VOLTAGE:
float referenceVoltage = 5.0;
int maxADCValue = 1023;
float  voltageDividerRatio = 3.0;
int adcValue = 0;
float inputVoltage = 0.0;
float measuredVoltage  = 0.0;


BH1750 lightMeter;

void setup() {
  Serial.begin(9600);
  Wire.begin();
  lightMeter.begin();
  pinMode(VoltPin, INPUT);
  display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS);
  display.clearDisplay();
  display.setTextColor(WHITE);
  display.setRotation(0);
  display.setTextSize(3);
  display.setCursor(0, 0);
  display.println("TEST:");
  display.display();
}

void loop() {
//        Serrintln();
int chk = DHT.read11(DHT11_PIN);
  uint16_t lux = lightMeter.readLightLevel();
  
  adcValue = analogRead(VoltPin);
  measuredVoltage = (adcValue * referenceVoltage) / maxADCValue;
  inputVoltage = measuredVoltage * voltageDividerRatio;

  
//  Serial.print("Light: ");
//  Serial.print(lux);
//  Serial.println(" lx");
//  Serial.print("Temp: ");
//  Serial.print(DHT.temperature);
//  Serial.println();
//  Serial.print("Hum: ");
//  Serial.print(DHT.humidity);
//  Serial.println();
//  Serial.print("Volt: ");
//  Serial.print(inputVoltage );
//  Serial.println();
//  Serial.println();



  display.clearDisplay();
  display.setTextSize(1);
  display.setCursor(0, 0);
  display.println("Temp:");
  display.setCursor(30, 0);
  display.println(DHT.temperature);
    display.setCursor(64, 0);
  display.println("Hum:");
    display.setCursor(90, 0);
  display.println(DHT.humidity);
    display.setCursor(0, 32);
  display.println("Volt:");
    display.setCursor(30, 32);
  display.println(inputVoltage);
      display.setCursor(0, 50);
  display.println("adcValue:");
    display.setCursor(64, 50);
  display.println(adcValue);
  
    display.setCursor(64, 32);
  display.println("Lux:");
    display.setCursor(90, 32);
  display.println(lux);
  display.display();
  delay(250);






}