// Libary
#include <Wire.h>
#include <SPI.h>
#include <Adafruit_Sensor.h>
#include "Adafruit_BME680.h"

// Pins Setup
#define BME_SCK 13 // SCL pin of Sensor
#define BME_MISO 12 // SDO pin of Sensor
#define BME_MOSI 11 // SDA pin of Sensor
#define BME_CS 10 // CS pin of Sensor

// Setting the sea level pressure (roughly 1024-1025 hPa from BOM)
#define SEALEVELPRESSURE_HPA (1025)

// Setting up a varible to reoresent BME sensor
Adafruit_BME680 bme(BME_CS, BME_MOSI, BME_MISO, BME_SCK);

void setup() {
  // Serial Begin
  Serial.begin(9600);

  // If the BME is not able to start
  if (!bme.begin()) {
    Serial.println(F("Could not find a valid BME680 sensor, check wiring!"));
    while (1);
  }

  // Set values to BME variable for accuracy
  bme.setTemperatureOversampling(BME680_OS_2X); // Parameters accepts readings
  bme.setHumidityOversampling(BME680_OS_2X);
  bme.setPressureOversampling(BME680_OS_2X);

  // Avoid external Disturbances
  bme.setIIRFilterSize(BME680_FILTER_SIZE_1);

  // For Gas Sensor setup accept temp and time the heater is on for
  bme.setGasHeater(320, 200); // 320 Degrees C, 200 ms
}


void loop() {
  // BME680 begins reading values
  unsigned long endTime = bme.beginReading();

  // If the readings has not started
  if (endTime == 0) {
    Serial.println(F("BME Measuring Failed to Read Values..."));
    return;
  }

  // Calling endReading & If the readings was not fully completted
  if (!bme.endReading()) {
    Serial.println(F("BME Measuring Failed to Finish Reading Values..."));
    return;
  }

  // DISPLAY VALUES
  Serial.print(F("Temperature = "));
  Serial.print(bme.temperature);
  Serial.println(F(" *C"));

  Serial.print(F("Pressure = "));
  Serial.print(bme.pressure / 100.0);
  Serial.println(F(" hPa"));

  Serial.print(F("Humidity = "));
  Serial.print(bme.humidity);
  Serial.println(F(" %"));

  Serial.print(F("Gas = "));
  Serial.print(bme.gas_resistance / 1000.0);
  Serial.println(F(" KOhms"));
}