#include <Wire.h>
#include <MS5611.h>
#include "I2Cdev.h"
#include "MPU6050.h"
#include <SPI.h>
#include <SD.h>
unsigned long time;
const int chipSelect = 4;
// Mark's version
// Arduino Wire library is required if I2Cdev I2CDEV_ARDUINO_WIRE implementation
// is used in I2Cdev.h
#if I2CDEV_IMPLEMENTATION == I2CDEV_ARDUINO_WIRE
#include "Wire.h"
#endif
MPU6050 accelgyro;
//MPU6050 accelgyro(0x69); // <-- use for AD0 high
#define OUTPUT_READABLE_ACCELGYRO
int16_t ax, ay, az;
int16_t gx, gy, gz;
MS5611 ms5611;
double referencePressure;
#define LED_PIN 13
bool blinkState = false;
void setup()
{
// join I2C bus (I2Cdev library doesn't do this automatically)
#if I2CDEV_IMPLEMENTATION == I2CDEV_ARDUINO_WIRE
Wire.begin();
#elif I2CDEV_IMPLEMENTATION == I2CDEV_BUILTIN_FASTWIRE
Fastwire::setup(400, true);
#endif
Serial.begin(9600);
// Initialize MS5611 sensor
Serial.println("Initialize MS5611 Sensor");
while(!ms5611.begin())
{
Serial.println("Could not find a valid MS5611 sensor, check wiring!");
delay(500);
}
// Get reference pressure for relative altitude
referencePressure = ms5611.readPressure();
// Check settings
checkSettings();
// initialize device
// Serial.println("Initializing I2C devices...");
accelgyro.initialize();
// verify connection
// Serial.println("Testing device connections...");
// Serial.println(accelgyro.testConnection() ? "MPU6050 connection successful" : "MPU6050 connection failed");
pinMode(LED_PIN, OUTPUT);
// Serial.print("Initializing SD card...");
if (!SD.begin(chipSelect)) {// see if the card is present and can be initialized:
// Serial.println("Card failed, or not present");
// don't do anything more:
return;
}
// Serial.println("card initialized.");
}
void checkSettings()
{
// Serial.print("Oversampling: ");
// Serial.println(ms5611.getOversampling());
}
void loop()
{
// read raw accel measurements from device
accelgyro.getAcceleration(&ax, &ay, &az);
// Read raw pressure and temp values
uint32_t rawTemp = ms5611.readRawTemperature();
uint32_t rawPressure = ms5611.readRawPressure();
// Read true temperature & Pressure
double realTemperature = ms5611.readTemperature();
long realPressure = ms5611.readPressure();
// Calculate altitude
float absoluteAltitude = ms5611.getAltitude(realPressure);
float relativeAltitude = ms5611.getAltitude(realPressure, referencePressure);
//change variables to strings
String comma = String (',');
String absalt = String (ms5611.getAltitude(realPressure)); //absoloute altitude in meters.
String temp = String ( ms5611.readTemperature()); //real temp in degrees, may over read initially, will take time for sensor to stabilize.
String realpressure = String (ms5611.readPressure()); // pressure in pascals
String accelXraw = String (ax); // raw accel in X. Divide by 2048 to get a "G" reading.
String timer = String (millis()); //puts a millis time stamp on each string.
//make a big string containing above strings
String Baro_data = String (absalt + comma + temp + comma + realpressure + comma + accelXraw + comma + timer) ;
Serial.println (Baro_data);
//delay(500);
File dataFile= SD.open("datalog.txt", FILE_WRITE);
// if the file is available, write to it:
if (dataFile) {
dataFile.println(Baro_data);//put Baro_data on the SD card
dataFile.close();
if (millis() > 10000) //change this number to change alarm delay (1s = 1000ms)
{tone (8,1000); // change the second number to alter the tone of the peizo alarm
}
else{ noTone(8);}
}}