#include "DHT.h"
#include <Adafruit_MPU6050.h>
#include <Adafruit_Sensor.h>

#define DHTPIN 12
#define DHTTYPE 22
#define PHOTOPIN 27

const float GAMMA = 0.7;
const float RL10 = 50;

DHT dht(DHTPIN, DHTTYPE);
float temp, hum, voltage, resistance, lux;
int analogval;
Adafruit_MPU6050 mpu;

sensors_event_t acc, gyr, x;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  dht.begin();
  Serial.println("DHT22 ready!");
  while (!mpu.begin()) {
    Serial.println("MPU6050 not connected!");
    delay(1000);
  }
  Serial.println("MPU6050 ready!");
  mpu.setAccelerometerRange(MPU6050_RANGE_8_G);
  mpu.setGyroRange(MPU6050_RANGE_250_DEG);
  mpu.setFilterBandwidth(MPU6050_BAND_21_HZ);
}

void loop() {
  // put your main code here, to run repeatedly:
  // this speeds up the simulation
  mpu.getEvent(&acc, &gyr, &x); // Acceleration, Rotation, Temperature (Unused)

  temp = dht.readTemperature(); //Environment Temperature
  hum = dht.readHumidity();
  analogval = analogRead(PHOTOPIN);
  voltage = analogval / 4096. * 5;
  resistance = 2000 * voltage / (1 - voltage / 5);
  lux = pow(RL10 * 1e3 * pow(10, GAMMA) / resistance, (1 / GAMMA)); //Brightness measured in lux
  if (lux == INFINITY){
    Serial.println("Infinite Brightness");
  } 
  Serial.print("Humidity: ");
  Serial.println(hum);
  Serial.print("Temperature: ");
  Serial.println(temp);
  Serial.print("Brightness: ");
  Serial.println(lux);
  Serial.print("X: ");
  Serial.print(acc.acceleration.x);
  Serial.print(", Y: ");
  Serial.print(acc.acceleration.y);
  Serial.print(", Z: ");
  Serial.print(acc.acceleration.z);
  Serial.println(" m/s^2");
  Serial.print("X_rot: ");
  Serial.print(gyr.gyro.x);
  Serial.print(", Y_rot: ");
  Serial.print(gyr.gyro.y);
  Serial.print(", Z_rot: ");
  Serial.print(gyr.gyro.z);
  Serial.println(" radians");
  Serial.println("----------------------------------");
  
  delay(1000);
}