Fysik eksamen

/*
 *  Fysik manticor inc 2018
 *  Teknisk Gymnasium Viby
 *
 *	Arduino nano
 *	OpenLog SD Card
 *  BMP085
 */

//Includes
#include <Wire.h>
#include <I2Cdev.h>
#include <BMP085.h>
#include <Math.h>

//Variables
BMP085 barometer;

float temperatureBMP085;
float pressure;
//float altitude;
//float p0 = 101325.0;    //tryk ved vandoverflade (muligvis ændres før start)
int32_t lastMicros;
int time = 0;
//float deltah;
//float p1 = 101066.00;   //ændre før start (tryk ved start)
//float h1 = 57.6;        //ændre før start (højde ved start)


void setup() {

  Serial.begin(9600);              //SD - card
  delay(1000);
  Wire.begin();
  Serial.println("Data logging starts");
  Serial.println();

}

void loop() {
  getTemperatureBMP085();
  getPressureBMP085();

  printData();

  delay(500);
  time += 0.5;
}

void getTemperatureBMP085(){
  // request temperature
  barometer.setControl(BMP085_MODE_TEMPERATURE);

  // wait appropriate time for conversion (4.5ms delay)
  lastMicros = micros();
  while (micros() - lastMicros < barometer.getMeasureDelayMicroseconds());

  // read calibrated temperature value in degrees Celsius
  temperatureBMP085 = barometer.getTemperatureC();
}


void getPressureBMP085(){
  lastMicros = micros();
  // request pressure (3x oversampling mode, high detail, 23.5ms delay)
  barometer.setControl(BMP085_MODE_PRESSURE_3);
  while (micros() - lastMicros < barometer.getMeasureDelayMicroseconds());

  //read calibrated pressure value in Pascals (Pa)
  pressure = barometer.getPressure();
}

void printData(){

  String outputString = "";

  outputString = String(time) + "," + String(temperatureBMP085) + "," + String(pressure);


  //Print SD Card
  Serial.println(outputString);




}