#define SOIL_SENSOR_PIN 32  // GPIO for Soil Moisture Sensor
#define YELLOW_LED_PIN 15    // GPIO for Yellow LED (Wet soil)
#define GREEN_LED_PIN 12     // GPIO for Green LED (Ideal soil)
#define RED_LED_PIN 14       // GPIO for Red LED (Dry soil)
#define BUZZER_PIN 13        // GPIO for Buzzer

int thresholdLow = 300;  // Example threshold for dry soil
int thresholdHigh = 700; // Example threshold for wet soil

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

  // Set pin modes for LEDs and buzzer
  pinMode(YELLOW_LED_PIN, OUTPUT);
  pinMode(GREEN_LED_PIN, OUTPUT);
  pinMode(RED_LED_PIN, OUTPUT);
  pinMode(BUZZER_PIN, OUTPUT);
}

void loop() {
  int soilMoistureValue = analogRead(SOIL_SENSOR_PIN);
  Serial.print("Soil Moisture: ");
  Serial.println(soilMoistureValue);

  bool buzzerOn = false;

  // Control LEDs and buzzer for Soil Moisture Sensor
  if (soilMoistureValue < thresholdLow) { // Soil is too dry
    digitalWrite(RED_LED_PIN, HIGH);    // Red LED on
    digitalWrite(GREEN_LED_PIN, LOW);   // Green LED off
    digitalWrite(YELLOW_LED_PIN, LOW);  // Yellow LED off
    tone(BUZZER_PIN, 1000);             // Buzzer on for soil moisture alert
    buzzerOn = true;
  } else if (soilMoistureValue > thresholdHigh) { // Soil is too wet
    digitalWrite(YELLOW_LED_PIN, HIGH); // Yellow LED on
    digitalWrite(RED_LED_PIN, LOW);     // Red LED off
    digitalWrite(GREEN_LED_PIN, LOW);   // Green LED off
    noTone(BUZZER_PIN);                 // Buzzer off
  } else {  // Soil is in the ideal range
    digitalWrite(GREEN_LED_PIN, HIGH);  // Green LED on
    digitalWrite(RED_LED_PIN, LOW);     // Red LED off
    digitalWrite(YELLOW_LED_PIN, LOW);  // Yellow LED off
    noTone(BUZZER_PIN);  
  }

  delay(1000); // Wait for a second before the next reading
}