#include <Wire.h>
#include <Adafruit_Sensor.h>
#include <Adafruit_ADXL345_U.h>
#include <DHT.h>
#include <LiquidCrystal_I2C.h>

// Pin Definitions
#define DHTPIN 15          // DHT22 data pin connected to GPIO 15
#define DHTTYPE DHT22      // DHT 22 (AM2302)

// Initialize DHT sensor
DHT dht(DHTPIN, DHTTYPE);

// Initialize ADXL345 sensor
Adafruit_ADXL345_Unified accel = Adafruit_ADXL345_Unified(12345);

// Initialize LCD Display (I2C address 0x27, 16 columns, 2 rows)
LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  Serial.begin(115200);
  
  // Initialize DHT22 sensor
  dht.begin();
  
  // Initialize ADXL345
  if (!accel.begin()) {
    Serial.println("No ADXL345 found!");
    while (1);
  }
  accel.setRange(ADXL345_RANGE_2_G); // Set range for ADXL345
  
  // Initialize LCD
  lcd.init();
  lcd.backlight();
  
  lcd.setCursor(0, 0);
  lcd.print("Initializing...");
  delay(2000);
}

void loop() {
  // Read humidity and temperature from DHT22
  float humidity = dht.readHumidity();
  float temperature = dht.readTemperature();
  
  // Check if readings failed
  if (isnan(humidity) || isnan(temperature)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }

  // Simulate soil moisture (for example purposes, fixed at 40%)
  float soilMoisture = 40.0;

  // Read ADXL345 values
  sensors_event_t event;
  accel.getEvent(&event);
  float x = event.acceleration.x;
  float y = event.acceleration.y;
  float z = event.acceleration.z;

  // Display on Serial Monitor
  Serial.print("Moisture: "); Serial.print(soilMoisture); Serial.println(" %");
  Serial.print("ADXL X: "); Serial.print(x); Serial.print(" Y: "); Serial.print(y); Serial.print(" Z: "); Serial.println(z);

  // Display on LCD
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Moisture: ");
  lcd.print(soilMoisture);
  lcd.print(" %");

  lcd.setCursor(0, 1);
  lcd.print("ADXL: ");
  lcd.print(x, 1); // Display only x-axis value

  delay(2000); // Update every 2 seconds
}