#include <Arduino.h>

// put function declarations here:
int myFunction(int, int);

/***************************************************************************
  This is a library for the BME280 humidity, temperature & pressure sensor

  Designed specifically to work with the Adafruit BME280 Breakout
  ----> http://www.adafruit.com/products/2650

  These sensors use I2C or SPI to communicate, 2 or 4 pins are required
  to interface. The device's I2C address is either 0x76 or 0x77.

  Adafruit invests time and resources providing this open source code,
  please support Adafruit andopen-source hardware by purchasing products
  from Adafruit!

  Written by Limor Fried & Kevin Townsend for Adafruit Industries.
  BSD license, all text above must be included in any redistribution
 ***************************************************************************/

#include <Wire.h>
#include <SPI.h>
#include <Adafruit_Sensor.h>
#include <Adafruit_BME280.h>

#define BME_SCK 13
#define BME_MISO 12
#define BME_MOSI 11
#define BME_CS 10

#define SEALEVELPRESSURE_HPA (1013.25)
#define Korrektur_Luftdruck KorrekturLuftdruck // Korrekturwert um Abweichungen zu offiziellen Wetterstationen auszugleichen 

Adafruit_BME280 bme; // I2C
//Adafruit_BME280 bme(BME_CS); // hardware SPI
//Adafruit_BME280 bme(BME_CS, BME_MOSI, BME_MISO, BME_SCK); // software SPI

unsigned long delayTime;
void printValues();

void setup() {
    Serial.begin(115200);
    Serial.println(F("BME280 test"));

    unsigned status;

     // default settings
    status = bme.begin();  
    // You can also pass in a Wire library object like &Wire2
    // status = bme.begin(0x76, &Wire2)
    if (!status) {
        Serial.println("Could not find a valid BME280 sensor, check wiring, address, sensor ID!");
        Serial.print("SensorID was: 0x"); Serial.println(bme.sensorID(),16);
        Serial.print("        ID of 0xFF probably means a bad address, a BMP 180 or BMP 085\n");
        Serial.print("   ID of 0x56-0x58 represents a BMP 280,\n");
        Serial.print("        ID of 0x60 represents a BME 280.\n");
        Serial.print("        ID of 0x61 represents a BME 680.\n");
        while (1) delay(10);
    }

    delayTime = 10000;

    Serial.println();
}


void loop() { 
    printValues();
    delay(delayTime);
}


void printValues() {
  float t = 0.0;
  float p = 0.0;
  float a = 0.0;
  float h = 0.0;
  char ct[15];
  char cp[15];
  char ca[15];
  char ch[15];
    Serial.print("Temperature:\t\t");
    t = bme.readTemperature();
    dtostrf(t,11,3,ct);
    Serial.print(ct);
    Serial.println(" °C");

    Serial.print("Humidity:\t\t");
    h = bme.readHumidity();
    dtostrf(h,11,3,ch);
    Serial.print(ch);
    Serial.println(" %");

    Serial.print("Pressure:\t\t");
    p = bme.readPressure() / 100.0F;
    p = p + Korrektur_Luftdruck;
    dtostrf(p,9,1,cp);
    Serial.print(cp);
    Serial.println(" hPa");

    Serial.print("Approx. Altitude:\t");
    a = bme.readAltitude(SEALEVELPRESSURE_HPA);
    dtostrf(a,11,3,ca);
    Serial.print(ca);
    Serial.println(" m über NN");

    Serial.println();
}