#include <OneWire.h>
#include <DallasTemperature.h>
#include <AutoPID.h>

// Data wire is plugged into digital pin x on the Arduino
#define ONE_WIRE_BUS 8

// Setup a oneWire instance to communicate with any OneWire device
OneWire oneWire(ONE_WIRE_BUS);	

// Pass oneWire reference to DallasTemperature library
DallasTemperature sensors(&oneWire);

#include <LiquidCrystal.h>

const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

double isttemp = 20;
double solltemp = 65;
double hysterese = 5;
double outputVal;

#define KP .12
#define KI .0003
#define KD 0

AutoPID myPID(&isttemp, &solltemp, &outputVal, 0, 10000, KP, KI, KD);

void setup(void)
{

  // Initalisiern des Outputs: Active on Low
  pinMode(10, OUTPUT);
  digitalWrite(10, HIGH);
 
  sensors.begin();	// Start up the library
  Serial.begin(9600);
  Serial.println("Version 1.1");
 
  Serial.print("Anzahl 1-wire Geraete: ");

  lcd.begin(16, 2);
  digitalWrite(13, HIGH);

  //if temperature is more than 4 degrees below or above setpoint, OUTPUT will be set to min or max respectively
  myPID.setBangBang(4);
  //set PID update interval to 4000ms
  myPID.setTimeStep(4000);
 

}

void loop(void)
{ 
  // Send the command to get temperatures
  sensors.requestTemperatures(); 
  isttemp = sensors.getTempCByIndex(0);

  solltemp = (float)map (analogRead(A2), 0, 1023, 500, 1200)/10;
  hysterese = (float)map (analogRead(A3), 0, 1023, 1, 100)/10;
  
  Serial.print("Temperature: ");
  Serial.print(isttemp);
  Serial.print((char)176);//shows degrees character
  Serial.print("C ");
  Serial.print("BangBang: ");
  Serial.print(hysterese);
  Serial.print((char)176);//shows degrees character
  Serial.println("C");

  lcd.setCursor(0, 0); lcd.print("Soll");
  lcd.setCursor(5, 0); lcd.print(solltemp);
  lcd.setCursor(12, 0); lcd.print(hysterese);
  
  lcd.setCursor(0, 1); lcd.print("Ist");
  lcd.setCursor(5, 1); lcd.print(isttemp);

myPID.run();
    Serial.println(outputVal);
  
  
    
  

  delay(500);
}