#include <LiquidCrystal_I2C.h>
#include <Wire.h>
#include <Servo.h>
#include <PID_v1.h>

LiquidCrystal_I2C lcd(0x27, 16, 2);
Servo servo;

//Celc to Fahr: (Celcius x 1.8) + 32 = fahrenheit 

int old = 0;
int New = 0;
int reading = (analogRead(A0)); // door position pot
int setTemp = (analogRead(A1));// temp position pot
int tempOld = 0;
int tempNew = 0;

void setup() {



Serial.begin(9600);

lcd.init();
lcd.backlight();
lcd.clear();

pinMode(A0, INPUT);
pinMode(A1, INPUT);

servo.attach(3);


}

void loop() {
old = reading;
tempOld = setTemp;

const float BETA = 3950; // should match the Beta Coefficient of the thermistor
int analogValue = analogRead(A3);
float celsius = 1 / (log(1 / (1023. / analogValue - 1)) / BETA + 1.0 / 298.15) - 273.15;

float fahr = (celsius * 1.8) + 32;






// reads servo pot
reading = analogRead(A0);
setTemp = analogRead(A1);

int mappedValue = map(reading, 0, 1023, 160, 320);
int servoPos = map(mappedValue, 160,320, 0, 180);

int temp = map(setTemp, 0, 1023, 160, 320);
// strings to print temp properly on screen
String testString = String(temp);
String feh = " F";

//lcd.setCursor(0, 9);
//lcd.print("CURRENT");
//lcd.setCursor(1, 10);
//lcd.print(fahr);

// compares if pot has been moved 
if (old != reading)
{ 

switch (mappedValue) {
// 5 settings of 32
  case 160 ... 192:
    //lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("FULL CURRENT:");
    servo.write(servoPos);
    
  break;
  case 193 ... 224:
    //lcd.clear();
    lcd.setCursor(1,0);
    lcd.print("3/4 OPEN   ");
    servo.write(servoPos);
    break;
  case 225 ... 256:
  //lcd.clear();
    lcd.setCursor(1,0);
    lcd.print("HALF OPEN    ");
    servo.write(servoPos);
    break;
  case 257 ... 288:
  //lcd.clear();
    lcd.setCursor(1,0);
    lcd.print("1/4 OPEN    ");
    servo.write(servoPos);
    break;
  case 289 ... 320:
  //lcd.clear();
  lcd.setCursor(1,0);
  lcd.print("CLOSED    ");
  servo.write(servoPos);
  break;

}
}
// checks if temp pot has been moved
/*if (tempOld != setTemp) {

  lcd.setCursor(1, 1);
  lcd.print(testString + feh); } */





  

  








}