#include <Wire.h>
#include <LiquidCrystal_I2C.h>

//LiquidCrystal_I2C lcd(0x27,20,4);  // Define I2C Address where the PCF8574A is
//LiquidCrystal_I2C lcd2(0x26,16,2);
LiquidCrystal_I2C lcd(0x27,16,2);

//#define BACKLIGHT_PIN     3
//#define En_pin  2
//#define Rw_pin  1
//#define Rs_pin  0
//#define D4_pin  4
//#define D5_pin  5
//#define D6_pin  6
//#define D7_pin  7

void setup()
{
lcd.init();
//lcd2.init();
  // Switch on the backlight
  lcd.setBacklight(HIGH);
  //lcd2.setBacklight(HIGH);

  //Serial.begin(9600); //2 skärmar

  //lcd2.setCursor (2,0);
  //lcd2.print ("hi");

  lcd.setCursor (2, 0);
  lcd.print ("RETR0 GUAGE");
  lcd.setCursor (0, 1);
  lcd.print ("DEVELOPED BY BSP");
  delay(2000);
  lcd.clear();
  delay(250);
  
  // an0 in  
  lcd.setCursor (0, 0);
  lcd.print ("LAM:");
  //delay(50);
  // an1 in
  lcd.setCursor (0, 1);
  lcd.print ("OIL:");
  //delay(50);
  // an2 in
  lcd.setCursor (9, 0);
  lcd.print ("MAP:");
  //delay(50);
  // an3 in
  lcd.setCursor (9, 1);
  lcd.print ("ECT:");
  //delay(250);

}

void loop()
{
  byte refreshreate = 1;
  lcd.home ();                   // go home
  

  int an0 = analogRead (A0);
  int an1 = analogRead (A1);
  int an2 = analogRead (A2);
  int an3 = analogRead (A3);

  // Analog in 0 kalibrering
  an0 = map(an0, 0, 1023, 50, 150);
  // Analog in 1 kalibrering
  an1 = map(an1, 0, 1023, -400, 1700);
  // Analog in 2 kalibrering
  an2 = map(an2, 40.92, 982.08, 200, 4000);
  // Analog in 3 kalibrering
  an3 = map(an3, 0, 1023, -400, 1700);

  //float voltage = an1;
  //float voltage2 = an3;

  lcd.setCursor (4, 0);
  lcd.print ((an0) / 100.0,2);//an0

  lcd.setCursor(13, 0);
  lcd.print ((an2) / 010.0);//an2

  lcd.setCursor (4,1);
  lcd.print ((an1) / 10.0,0);//an1

  lcd.setCursor (13,1);
  lcd.print ((an3) / 10.0,0);//an3


  lcd.setCursor(7,1);
  if (an1 <= -110)
  lcd.print("c");
  else if (an1 >=1000)
  lcd.print ("c");
  lcd.setCursor(6,1);
  if (an1 >100 and an1 <= 1000)
  lcd.print("c ");
  else if (an1 <0 and an1 >-90)
  lcd.print("c ");
  lcd.setCursor(5,1);
  if (an1 >0 and an1 <= 101)
  lcd.print("c  ");

  lcd.setCursor(15,1);
  if(an3 <= 1000 and an3 >= -110)
  lcd.print("c");
  


}