#include <ESP32Servo.h>

int soilPin   = 34;  // Soil sensor (potentiometer)
int servoPin  = 18;  // Servo
int ledPin    = 19;  // LED
int pirPin    = 21;  // PIR sensor
int buzzerPin = 5;   // Buzzer

Servo myServo;
int soilValue = 0;

void setup() {
  Serial.begin(115200);

  // Servo
  myServo.attach(servoPin);

  // LED + Buzzer
  pinMode(ledPin, OUTPUT);
  pinMode(buzzerPin, OUTPUT);

  // PIR sensor
  pinMode(pirPin, INPUT);
}

void loop() {
  // --- Soil Moisture Section ---
  soilValue = analogRead(soilPin); // ESP32 ADC range 0–4095
  Serial.print("Soil Moisture: ");
  Serial.println(soilValue);

  if (soilValue < 1500) { // Threshold
    Serial.println("Soil Dry → Servo + LED ON");
    digitalWrite(ledPin, HIGH);
    myServo.write(90);
  } else {
    Serial.println("Soil Wet → Servo + LED OFF");
    digitalWrite(ledPin, LOW);
    myServo.write(0);
  }

  // --- PIR + Buzzer Section ---
  int pirState = digitalRead(pirPin);

  if (pirState == HIGH) {
    Serial.println("Motion Detected → Buzzer ON");
    digitalWrite(buzzerPin, HIGH);   // Buzzer ON while motion detected
  } else {
    Serial.println("No Motion → Buzzer OFF");
    digitalWrite(buzzerPin, LOW);    // Buzzer OFF when no motion
  }

  delay(200); // small delay for stability
}