/***************************************************************************
 * Current version for the 24 bit baro sensor, read pressure, temperature and humidity.
 * 
 * Runs on an Arduino nano and uses the Jaycar Xc3702  BME 280 module
 * intention is to keep everything at the sensor end as simple as possible, the Windows software pretty well does everything else.
 * Code written by Blair..
 * 
 * *************************************************************************
  This is a library for the BMP280 humidity, temperature & pressure sensor

  Designed specifically to work with the Adafruit BMP280 Breakout
  ----> http://www.adafruit.com/products/2651

  These sensors use I2C or SPI to communicate, 2 or 4 pins are required
  to interface.

  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_BMP280.h>
//#include <Adafruit_Sensor.h>

// The following lines define the connections and pins to the nano

#define BMP_SCK  (13)
#define BMP_MISO (12)
#define BMP_MOSI (11)
#define BMP_CS   (10)

Adafruit_BMP280 bmp; // I2C     jaycar Xc3702 module is at 0x76, Altronics  Z6455 module
  
/*
 On the Nano with an atmega328,
 pin A4 is SDA and pin A5 is SCL. 
 Same as on an UNO, or any other board based on the atmega328.
  
 
Adafruit_BMP280 bmp(BMP_CS); // hardware SPI
Adafruit_BMP280 bmp(BMP_CS, BMP_MOSI, BMP_MISO,  BMP_SCK);

*/

void setup() {
  Serial.begin(9600);
//  Serial.println(F("BMP280 test"));

  if (!bmp.begin()) {
    Serial.println(F("Could not find a valid BMP280 sensor, check wiring!"));
    while (1);
  }

  /* Default settings from datasheet. */
  bmp.setSampling(Adafruit_BMP280::MODE_NORMAL,     /* Operating Mode. */
                  Adafruit_BMP280::SAMPLING_X2,     /* Temp. oversampling */
                  Adafruit_BMP280::SAMPLING_X16,    /* Pressure oversampling */
                  Adafruit_BMP280::FILTER_X16,      /* Filtering. */
                  Adafruit_BMP280::STANDBY_MS_500); /* Standby time. */
}

void loop() {
//    Serial.print(F("Temperature = "));
//    Serial.print(bmp.readTemperature());
//    Serial.println(" *C");

//    Serial.print(F("Pressure = "));
    Serial.print(bmp.readPressure());
    Serial.print(" ");   // 1 space
    Serial.print(bmp.readTemperature());
    
    Serial.print(" ");   // 1 space
    Serial.print(bme.readHumidity());
//  Serial.println(" %");

//    Serial.print(F("Approx altitude = "));
//    Serial.print(bmp.readAltitude(1013.25)); /* Adjusted to local forecast! */
//    Serial.println(" m");

    Serial.println();
    delay(1000);
}