Buoy

#include <SPI.h>
#include <SD.h>
#include <SoftwareSerial.h>
#include <ParallaxLCD.h>
#include <TinyGPS++.h>

ParallaxLCD lcd(9,2,16);

//Temperature variables
int sensePin = A1;  //This is the Arduino Pin that will control Relay #1
int sensorInput;    //The variable we will use to store the sensor input
double temp;        //The variable we will use to store temperature in degrees. 

//Ultrasonic
#define trigPin 8
#define echoPin 7

//GPS
#define GPSRxPin 6
#define GPSTxPin 5
static const uint32_t GPSBaud = 9600;                   // gps baud rate, the module I have use 9600
SoftwareSerial SerialGPS(GPSRxPin, GPSTxPin);         // The serial connection to the GPS device
TinyGPSPlus gps;

const int chipSelect = 10; 

struct DATA {
  String date;
  String time;
  String lat;
  String lng;
  int light;
  float temperature;
  int distance;  
};
DATA sData;

void setup() {
  lcd.setup();
  delay(1000);
  lcd.on();
  lcd.backLightOn();
  lcd.at(0,0,"Initialize");
  delay(2000);
  SerialGPS.begin(GPSBaud);
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);

  if (!SD.begin(chipSelect)) {
    // don't do anything more:
    return;
  }
}

void loop() {
  updateLocation();
  sData.date=String(gps.date.year()) + F("/") + String(gps.date.month()) + F("/") + String(gps.date.day());
  sData.time=String(gps.time.hour()) + F(":") + String(gps.time.minute()) + F(":") + String(gps.time.second());
  sData.lat=String(gps.location.lat(),6);
  sData.lng=String(gps.location.lng(),6);
  lcd.empty();
  lcd.at(0,0,"DATE: " );
  lcd.at(0,6,String(gps.date.year()) + F("/") + String(gps.date.month()) + F("/") + String(gps.date.day()));
  lcd.at(1,0,"TIME: " );
  lcd.at(1,6,String(gps.time.hour()) + F(":") + String(gps.time.minute()) + F(":") + String(gps.time.second()));
  delay(2000); 
  lcd.empty();
  lcd.at(0,0,"LAT: ");
  lcd.at(0,6,String(gps.location.lat(),6));
  lcd.at(1,0,"LNG: ");
  lcd.at(1,6,String(gps.location.lng(),6));
  delay(2000);

  //Light
  int photocellReading = analogRead(0); 
  sData.light= photocellReading;
  lcd.empty();
  lcd.at(0,0,"Light: ");
  lcd.at(0,7,photocellReading);
  delay(2000);

  //Temperature
  sensorInput = analogRead(A1);        //read the analog sensor and store it = 
  sData.temperature = (float)sensorInput/10;
  lcd.empty();
  lcd.at(0,0,"Temp: ");
  lcd.at(0,6,String((float)sensorInput/10));
  delay(2000);

  //Distance
  long duration, distance;
  digitalWrite(trigPin, LOW);  // Added this line
  delayMicroseconds(2); // Added this line
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10); // Added this line
  digitalWrite(trigPin, LOW);
  duration = pulseIn(echoPin, HIGH);
  distance = (duration/2) / 29.1;
  sData.distance = distance;
  lcd.empty();
  lcd.at(0,0,"Distance: ");
  lcd.at(0,10,distance);
  delay(2000);

  saveData();  
}

void updateLocation(){
  while(!gps.location.isUpdated()||!gps.time.isUpdated()){ 
    while (SerialGPS.available() > 0) {
        char c = SerialGPS.read();
        gps.encode(c);
    }
  }  
}

void saveData(){
  File dataFile = SD.open("data.txt", FILE_WRITE);
  // if the file is available, write to it:
  if (dataFile) { 
    dataFile.print(sData.date);
    dataFile.print(",");
    dataFile.print(sData.time + "GMT");
    dataFile.print(",");
    dataFile.print(sData.lat);
    dataFile.print(",");
    dataFile.print(sData.lng);
    dataFile.print(",");
    dataFile.print(sData.light);
    dataFile.print(",");
    dataFile.print(sData.temperature);
    dataFile.print(",");
    dataFile.print(sData.distance);
    dataFile.println("");
  }       
  dataFile.close();
}