/*


*/

// include the library code:
#include <LiquidCrystal.h>

// initialize the library by associating any needed LCD interface pin
// with the arduino pin number it is connected to
const int rs = 8, en = 9, d4 = 4, d5 = 5, d6 = 6, d7 = 7;
const int bojlersz = 10, kazansz = 11, alsosz = 12, felsosz = 13; // felso sz, also sz, kazan sz, kazan termosztat
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

int keyinputb,lastkeyinputb;
int keyinputf,lastkeyinputf;
int keyinputa,lastkeyinputa;


String key,lastkey;
char serinput;

String inputString = "";         // a String to hold incoming data
String outputString = "";
bool stringComplete = false;  // whether the string is complete

void setup() {

  key = "None  ";

  pinMode(A0, INPUT_PULLUP);
  pinMode(A1, INPUT_PULLUP);
  pinMode(A2, INPUT_PULLUP);
  pinMode(13, OUTPUT);
  
  // set up the LCD's number of columns and rows:
  lcd.begin(16, 2);
  Serial.begin(9600);
  // reserve 64 bytes for the inputString:
  inputString.reserve(64);
  lcd.print("init...");
  delay(1000);
}

void loop() {

  // print the string when a newline arrives:
  if (stringComplete) { 
    lcd.setCursor(0,0);
    lcd.print(outputString);
    lcd.print("       ");
    // clear the string:
    inputString = "";
    stringComplete = false;
  } 
  keyinputf=digitalRead(A1);
  if (keyinputf != lastkeyinputf) {  //felso kor termosztat
    lcd.setCursor(1,0);
    lastkeyinputf = keyinputf;
    if (keyinputf == true) {
      lcd.print("H");
      digitalWrite(felsosz, LOW);      
    } else {
      lcd.print("L");
      digitalWrite(felsosz, HIGH);
    }
  }
  keyinputa=digitalRead(A2);
  if (keyinputa != lastkeyinputa) { //also kor termosztat
    lcd.setCursor(2,0);
    lastkeyinputa = keyinputa;
    if (keyinputa == true) {
      lcd.print("H");
      digitalWrite(alsosz, LOW);      
    } else {
      lcd.print("L");
      digitalWrite(alsosz, HIGH);      
    }
  }
  keyinputb=digitalRead(A0);
  if (keyinputb != lastkeyinputb) { //bojler termosztat
    lastkeyinputb = keyinputb;
  }

    if (keyinputb == false) {
      lcd.setCursor(0,0);
      lcd.print("H");
      digitalWrite(bojlersz, HIGH);
      digitalWrite(kazansz, HIGH);
      digitalWrite(felsosz, LOW);
      digitalWrite(alsosz, LOW); 


    } else {
      lcd.print("H");
      digitalWrite(bojlersz, LOW);
      digitalWrite(kazansz, LOW);
     
    }




}

void serialEvent() {
  while (Serial.available()) {
    // get the new byte:
    char inChar = (char)Serial.read();
    // add it to the inputString:
    inputString += inChar;
    // if the incoming character is a newline, set a flag so the main loop can
    // do something about it:
    if (inChar == '\n') {
      stringComplete = true;
    }
  }
}