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

// Servo Motor
Servo rackServo;
#define SERVOPIN PA8

// Analog Pins
#define HUMIDITYPIN PA0
#define RAINPIN PA1

// Thresholds (percentage → analog)
const int humidityThreshold = 818; // 80% of 1023
const int rainThreshold = 512;     // 50% of 1023

// LCD I2C
LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  Serial.begin(9600);
  rackServo.attach(SERVOPIN);
  lcd.begin(16, 2);
  lcd.backlight();
}

void loop() {
  int humidityValue = analogRead(HUMIDITYPIN); // 0–1023
  int rainValue = analogRead(RAINPIN);         // 0–1023

  // Print to Serial
  Serial.print("Humidity: ");
  Serial.print(humidityValue);
  Serial.print(" | Rain sensor: ");
  Serial.println(rainValue);

  // LCD display
  lcd.setCursor(0, 0);
  lcd.print("Hum: ");
  lcd.print(humidityValue);
  lcd.print("    ");

  lcd.setCursor(0, 1);
  lcd.print("Rain: ");
  lcd.print(rainValue);
  lcd.print("    ");

  // Folding condition
  if (humidityValue > humidityThreshold || rainValue > rainThreshold) {
    rackServo.write(0);   // Fold rack
  } else {
    rackServo.write(90);  // Unfold rack
  }

  delay(2000);
}