//#include <Arduino.h>
#include <Wire.h>
#include <U8g2lib.h>
#include <OneWire.h>
#include <DallasTemperature.h>
//////////////////////////////////////Oled sherm

#define SDA_PIN 21
#define SCL_PIN 22
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 128
U8G2_SH1107_128X128_F_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE, /* clock=*/ SCL_PIN, /* data=*/ SDA_PIN);
//U8G2_SH1106_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE, /* clock=*/ SCL_PIN, /* data=*/ SDA_PIN);
bool SchermUpdaten = true;

/////////////////////////////////////Pot meter
#define POTPIN 12
int Ingegeventemp_oud;
int Ingegeventemp;

/////////////////////////////////////Temp meter
#define ONE_WIRE_BUS 27
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);
float temperatureC_oud;
bool systeemAanUit;
float temperatureC;
unsigned long tempTimeStamp;

////////////////////////////////////Knop systeem aan/uit
#define aanUitknop 18
int statusKnopEerder = 0;

///////////////////////////////////Relais
#define relayPin 13

bool VerwarmingAanUit;

void setup() {
  Serial.begin(25100);

//////////////////////////////////////Oled sherm
  u8g2.begin();
  u8g2.clearBuffer();
  u8g2.setFont(u8g2_font_6x13B_t_cyrillic);

//////////////////////////////////////pot meter
  int analogValue = analogRead(POTPIN);

///////////////////////////////////Temp meter
  sensors.begin(); 
  pinMode(aanUitknop, INPUT_PULLDOWN);

////////////////////////////////////Relay
  pinMode(relayPin, OUTPUT);

  if (sensors.getDeviceCount() == 0) {
    Serial.println("Geen sensor");
  }
}


void loop() {
  
  if(systeemAanUit == true){
    int analogValue = analogRead(POTPIN);
    Ingegeventemp = map(analogValue, 0, 4095, 5, 35);
    if(millis() - tempTimeStamp > 2000){
      tempTimeStamp = millis();
      sensors.requestTemperatures();
      if(sensors.isConversionComplete()){
        temperatureC = sensors.getTempCByIndex(0) * 7.96178;
        Serial.println(temperatureC * 8);           
      }
    }else if(temperatureC == DEVICE_DISCONNECTED_C){
      Serial.println("temperatuur ophalen mislukt");
    }
   
    if(temperatureC != temperatureC_oud){
    temperatureC_oud = temperatureC;
    SchermUpdaten = true;
    }else if(Ingegeventemp != Ingegeventemp_oud){
    Ingegeventemp_oud = Ingegeventemp;
    SchermUpdaten = true;
    }
    VerwarmingAanUit = true;
    digitalWrite(relayPin, HIGH);
    if(((Ingegeventemp -0.5) < temperatureC)){
      VerwarmingAanUit = false;
      digitalWrite(relayPin, LOW);
    }
  }else{
    digitalWrite(relayPin, LOW);
  }
  
  if(SchermUpdaten == true){
    u8g2.clearBuffer();

    if(systeemAanUit == false){
      u8g2.setCursor(10, 60);
      u8g2.print("System off");
    }else{
      u8g2.setCursor(10, 119);
      u8g2.print("Temp:");
      u8g2.setCursor(45, 119);
      u8g2.print(temperatureC, 1);

      u8g2.setCursor(10, 80);
      u8g2.print("Temp inst:");
      u8g2.setCursor(80, 80);
      u8g2.print(Ingegeventemp, 1);

      u8g2.setCursor(10, 70);
      if(VerwarmingAanUit == true){
        u8g2.print("Verwarming aan");
      }else{
        u8g2.print("Verwarming uit");
      }
    }
    u8g2.sendBuffer();
    SchermUpdaten = false;
  }

  bool statusKnop = digitalRead(aanUitknop);

  if(statusKnop != statusKnopEerder ){
   statusKnopEerder = statusKnop;
    
    if(statusKnop == 1){
      systeemAanUit = !systeemAanUit;
      SchermUpdaten = true;
    }
    delay(5);
  }
}