#include <WiFi.h>                // Wi-Fi library
#include <Wire.h>                // I2C library
#include <SPI.h>                 // SPI library
#include <Adafruit_Sensor.h>     // Sensor library (use a compatible sensor)
#include <Adafruit_BME280.h>     // BME280 sensor library
#include <Servo.h>               // Servo library

// Wi-Fi credentials
const char* ssid = "Wokwi-GUEST";
const char* password = "";

// BME280 sensor I2C address
#define BME280_I2C_ADDRESS 0x76

Adafruit_BME280 bme; // create BME280 object
Servo myservo;       // create a Servo object

void setup() {
  Serial.begin(115200);
  pinMode(2, OUTPUT);    // Built-in LED (GPIO2)
  pinMode(4, INPUT);     // Button input (GPIO4)
  
  // Connect to Wi-Fi
  WiFi.begin(ssid, password);
  Serial.print("Connecting to WiFi...");
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print(".");
    delay(500);
  }
  Serial.println("\nConnected to WiFi");

  // Initialize I2C and BME280 sensor
  if (!bme.begin(BME280_I2C_ADDRESS)) {
    Serial.println("Could not find BME280 sensor!");
    while (1);
  }

  // Initialize the Servo
  myservo.attach(13); // Attach servo to GPIO13

  // Start an ADC (Analog to Digital Conversion)
  analogReadResolution(10);  // 10-bit ADC resolution
  Serial.println("Setup complete");
}

void loop() {
  // Toggle the LED
  digitalWrite(2, HIGH);   // Turn the LED on
  delay(500);
  digitalWrite(2, LOW);    // Turn the LED off
  delay(500);

  // Read and display button state
  int buttonState = digitalRead(4);
  Serial.print("Button state: ");
  Serial.println(buttonState);

  // Read and display sensor data (temperature, humidity, pressure)
  float temperature = bme.readTemperature();
  float humidity = bme.readHumidity();
  float pressure = bme.readPressure() / 100.0F; // convert to hPa
  Serial.print("Temperature: ");
  Serial.print(temperature);
  Serial.println(" °C");
  Serial.print("Humidity: ");
  Serial.print(humidity);
  Serial.println(" %");
  Serial.print("Pressure: ");
  Serial.print(pressure);
  Serial.println(" hPa");

  // ADC read (Analog sensor input)
  int analogValue = analogRead(34); // ADC pin 34
  Serial.print("Analog Value: ");
  Serial.println(analogValue);

  // Control servo based on analog input
  int servoAngle = map(analogValue, 0, 1023, 0, 180); // map ADC value to servo angle
  myservo.write(servoAngle);

  // Display IP address
  Serial.print("ESP32 IP Address: ");
  Serial.println(WiFi.localIP());

  // SPI Communication (Example of sending data)
  SPI.begin();
  SPI.beginTransaction(SPISettings(4000000, MSBFIRST, SPI_MODE0));
  digitalWrite(SS, LOW);
  SPI.transfer(0x42); // Send a byte
  digitalWrite(SS, HIGH);
  SPI.endTransaction();

  // Simple task creation example (non-blocking delay)
  delay(1000); // Wait for a second
}