/*MENU NAVIGATION*/

#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);

//Rotary encoder inputs
#define button1 8
#define button2 9

#define options 3
String message[] = {"Humidity Setting", "Backlight On/Off" , "Delay Time"};


int humiditySet = 50;
unsigned long lastFanSwitch = millis();
unsigned long lastButtonPress = 0;
unsigned long lastRead = 0;
unsigned long timer = 600000;
unsigned long timerStart = 0;
int maxH = 80;
int minH = 25;
int sensingIncrement = 5000;
byte fanState = 0;
byte lastFanState = 0;
byte timerState = 0;
byte backLightState = 1;
int counter = 0;

void setup() {

  // Run LCD 1602 Display Setup
  lcd1602Setup();

  // Designate inputs and outputs
  pinMode(button1, INPUT);
  pinMode(button2, INPUT);

  // Setup Serial Monitor
  Serial.begin(9600);
}

void loop() {
  byte b1 = 0;
  byte b2 = 0;
  if (millis() - lastButtonPress > 500) {
    b1 = digitalRead(button1);
    b2 = digitalRead(button2);
    if (b1 == 1 || b2 == 1) {
      lastButtonPress = millis();
      if (b1 == 1) {
        counter ++;
        if (counter > options -1) {
          counter -= options;
        }
        l1Print(message[counter]);
      } else if (b2 == 1) {
        counter --;
        if (counter < 0) {
          counter += options;
        }
        l1Print(message[counter]);
      }
    }

  }

}

void lcd1602Setup() {
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0, 0);
  lcd.print("Startup Complete!");
  delay(2000);
  lcd.clear();
}

void l1Print(String msg) {

  lcd.setCursor(0, 0);
  lcd.print(msg + "           ");

}