/* Laurien Hofkens 21/05/2024
 *  Schakeling miniserre :
 *  - data van temperatuursensor DS18B20
 *  - data van grondvochtigheidsensor
 *  - data leesbaar op I2C LCD
 *  - servomotor voor bewatering
 */
// Include the libraries we need
#include <OneWire.h>              // library Temp.sensor
#include <DallasTemperature.h>    // Library Temp.sensor
#include <Wire.h>                 // Library voor I2C
#include <LiquidCrystal_I2C.h>    // Library voor LCD

LiquidCrystal_I2C lcd(0x27,20,4);  // set the LCD address to 0x27 for a 16 chars and 2 line display

// Data wire is plugged into port 2 on the Arduino
#define ONE_WIRE_BUS 2

// Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs)
OneWire oneWire(ONE_WIRE_BUS);

// Pass our oneWire reference to Dallas Temperature. 
DallasTemperature sensors(&oneWire);

int grondVocht;    // variabele voor grondvochtigheid

/*
 * The setup function. We only start the sensors here
 */
void setup()
{
  lcd.init();                   // initialiseer LCD
  lcd.backlight();              // zet achtergrond licht LCD aan
  lcd.setCursor(3,0);           // zet cursor 4e plaats van 1e lijn
  lcd.print("Laurien");         // print tekst
  Serial.begin(9600);           // start serial port 9600 bps
  Serial.println("Dallas Temperature IC Control Library Demo");

  // Start up the library
  sensors.begin();
}

/*
 * Main function, get and show the temperature
 */
void loop()
{ 
  // call sensors.requestTemperatures() to issue a global temperature 
  // request to all devices on the bus
  Serial.print("Requesting temperatures...");
  sensors.requestTemperatures(); // Send the command to get temperatures
  Serial.println("DONE");
  // After we got the temperatures, we can print them here.
  // We use the function ByIndex, and as an example get the temperature from the first sensor only.
  float tempC = sensors.getTempCByIndex(0);

  // Check if reading was successful
  if(tempC != DEVICE_DISCONNECTED_C) 
  {
    Serial.print("Temperature for the device 1 (index 0) is: ");
    Serial.println(tempC);
    lcd.setCursor(0,1);   // zet cursor op 1e plaats 2e rij
    lcd.print(tempC);
    lcd.print(char(223));
    lcd.print("Celsius");
  } 
  else
  {
    Serial.println("Error: Could not read temperature data");
    lcd.setCursor(0,1);   // zet cursor op 1e plaats 2e rij
    lcd.print("Error.temp.sensor");
  }
 grondVocht = analogRead(A0);
 lcd.setCursor(0,2);
 lcd.print(grondVocht);
}