Smartphone Controlled Atomic Weather Station

/* This Arduino code receives a single character from the Raspberry Pi  and performs a varety of tasks: displaying time/indoor temperature,  location, outdoor temperature, greeting, and birthday, as well as  playing a tone.  Some parts of this code are taken from open-source examples.   Libraries to install:  Adafruit_GPS-master - https://github.com/adafruit/Adafruit_GPS  DHT-sensor-library-master - https://github.com/adafruit/DHT-sensor-library   Created by Daniel Martin, 2016  * */  #include <Adafruit_GPS.h> #include <SoftwareSerial.h>  #include "DHT.h"  #define DHTPIN 10 // what digital pin we're connected to  // Uncomment whatever type you're using! //#define DHTTYPE DHT11 // DHT 11 #define DHTTYPE DHT22 // DHT 22 (AM2302), AM2321  DHT dht(DHTPIN, DHTTYPE);   // If you're using a GPS module: // Connect the GPS Power pin to 5V // Connect the GPS Ground pin to ground // If using software serial (sketch example default): // Connect the GPS TX (transmit) pin to Digital 3 // Connect the GPS RX (receive) pin to Digital 2 // If using hardware serial (e.g. Arduino Mega): // Connect the GPS TX (transmit) pin to Arduino RX1, RX2 or RX3 // Connect the GPS RX (receive) pin to matching TX1, TX2 or TX3  // If you're using the Adafruit GPS shield, change // SoftwareSerial mySerial(3, 2); -> SoftwareSerial mySerial(8, 7); // and make sure the switch is set to SoftSerial  // If using software serial, keep this line enabled // (you can change the pin numbers to match your wiring): SoftwareSerial mySerial(8, 7);  // If using hardware serial (e.g. Arduino Mega), comment out the // above SoftwareSerial line, and enable this line instead // (you can change the Serial number to match your wiring):  //HardwareSerial mySerial = Serial1;   Adafruit_GPS GPS(&mySerial);  #include <Time.h> // Time Library #include "Tones11.h" // The code containing the frequencies of notes as variables #include <LiquidCrystal.h> // LCD Library #include <Wire.h>   LiquidCrystal lcd(2, 3, 4, 5, 6, 9);    // Set GPSECHO to 'false' to turn off echoing the GPS data to the Serial console // Set to 'true' if you want to debug and listen to the raw GPS sentences. #define GPSECHO true  const int UTC_offset = -7; // Pacific Time  // this keeps track of whether we're using the interrupt // off by default! boolean usingInterrupt = false; void useInterrupt(boolean); // Func prototype keeps Arduino 0023 happy  char state; //initializes the variable that will receive a char from Pi int mode = 1; //the mode of the display (default time, date, temp, humidity  // Used for converting the date, month, and year to the desired time zone const int TimeZone = -8; //Pacific Time int DSTbegin[] = { //DST 2013 - 2025 in Canada and US  310, 309, 308, 313, 312, 311, 310, 308, 314, 313, 312, 310, 309 }; int DSTend[] = { //DST 2013 - 2025 in Canada and US  1103, 1102, 1101, 1106, 1105, 1104, 1103, 1101, 1107, 1106, 1105, 1103, 1102 }; int DaysAMonth[] = { //number of days a month  31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };  //initialization of variables for the time/date display int Year; int Month; int Day = 0; int Hour; byte Minute; byte Second; char ap = 'A'; boolean suspendSec = false;  //initializes variables to refresh the display every few seconds int timerNum = 200; int refresh = 0;  // The Pi sends six characters (3 numbers for out temp) which will be filled into this array char wea[6] = {'a', 'a', 'a', 'a', 'a', 'a'};  // Creates the degree symbol byte degree[8] = {  B01110,  B10001,  B10001,  B01110,  B00000,  B00000,  B00000,  B00000 };  // Creates the bell symbol byte bell[8] = {  B00100,  B01110,  B01110,  B11111,  B11111,  B00100,  B00000,  B00000 };   void setup() {  dht.begin();  // set up the LCD's number of rows and columns:  lcd.begin(16, 2);  lcd.clear();  // Print a message to the LCD.  lcd.print("RGB 16x2 Display ");  lcd.setCursor(0, 1);  lcd.print(" Multicolor LCD ");   pinMode(13, OUTPUT);  lcd.createChar(0, degree);  lcd.createChar(1, bell);   Serial.begin(9600);   // 9600 NMEA is the default baud rate for Adafruit MTK GPS's- some use 4800  GPS.begin(9600);   // uncomment this line to turn on RMC (recommended minimum) and GGA (fix data) including altitude  GPS.sendCommand(PMTK_SET_NMEA_OUTPUT_RMCGGA);  // uncomment this line to turn on only the "minimum recommended" data  //GPS.sendCommand(PMTK_SET_NMEA_OUTPUT_RMCONLY);  // For parsing data, we don't suggest using anything but either RMC only or RMC+GGA since  // the parser doesn't care about other sentences at this time   // Set the update rate  GPS.sendCommand(PMTK_SET_NMEA_UPDATE_1HZ); // 1 Hz update rate  // For the parsing code to work nicely and have time to sort thru the data, and  // print it out we don't suggest using anything higher than 1 Hz   // Request updates on antenna status, comment out to keep quiet  //GPS.sendCommand(PGCMD_ANTENNA);   // the nice thing about this code is you can have a timer0 interrupt go off  // every 1 millisecond, and read data from the GPS for you. that makes the  // loop code a heck of a lot easier!  useInterrupt(true);   delay(2000);  lcd.clear();  // Ask for firmware version  mySerial.println(PMTK_Q_RELEASE); }   // Interrupt is called once a millisecond, looks for any new GPS data, and stores it SIGNAL(TIMER0_COMPA_vect) {  char c = GPS.read();  // if you want to debug, this is a good time to do it! #ifdef UDR0  // if (GPSECHO)  //if (c) UDR0 = c;  // writing direct to UDR0 is much much faster than Serial.print  // but only one character can be written at a time. #endif }  // By default we are not using the interrupt void useInterrupt(boolean v) {  if (v) {  // Timer0 is already used for millis() - we'll just interrupt somewhere  // in the middle and call the "Compare A" function above  OCR0A = 0xAF;  TIMSK0 |= _BV(OCIE0A);  usingInterrupt = true;  } else {  // do not call the interrupt function COMPA anymore  TIMSK0 &= ~_BV(OCIE0A);  usingInterrupt = false;  } }  uint32_t timer = millis(); void loop() // run over and over again {  if (GPS.newNMEAreceived()) {    if (!GPS.parse(GPS.lastNMEA())) // this also sets the newNMEAreceived() flag to false  return; // we can fail to parse a sentence in which case we should just wait for another  }    if (Serial.available() > 0) {  delay(3000);  state = Serial.read(); //read what character was sent from the Pi   switch (state)  {  case 'M': //change the mode of the display  mode = -mode;  lcd.clear();   break;  case 'A': //beep at 2500Hz for 1 second  tone(11, 2500, 1000);  break;  case 'B': //show the next birthday  nextBirthday();  delay(5000);  lcd.clear();  break;  case 'G': //display a time-based greeting  greeting();  delay(5000);  lcd.clear();  break;  case 'W': //show outdoor temperature  showWeather();  delay(5000);  lcd.clear();  break;   }  }   if (mode == 1) { //set to time, date, indoor temp, humidity mode  mode1();  }  else if (mode == -1) { //set to longitude, latitude, altitude, heat index mode  mode2();  } }  //mode 1 displays the time, date, indoor temp, and humidity void mode1() {   if (timer > millis()) timer = millis();   if (millis() - timer > timerNum) { //every 0.2 seconds  timer = millis(); // reset the timer   getTime();  conversion();  displayTime();  if (refresh % (1000 / timerNum * 5) == 0) { //check temperature every 5 seconds  checkTemp();  }  displayDate();  if (refresh % (1000 / timerNum * 5) == 0) { //check date every 5 seconds  checkHum();  }  refresh++;  if (refresh > (1000 / timerNum * 60)) { //refresh display every minute  lcd.clear();  refresh = 0;  }    } }  //mode 2 displays latitude, longitude, altitude, and heat index void mode2() {  displayLocation();  heatIndex();  if ((Minute == 0) && (Second == 0)) { //at every hour sound the chime  fullHour();  }  delay(200); }  //displays the hour, minute, second, and am/pm //takes a 24-hour clock time already converted to the correct time zone void displayTime() {   lcd.setCursor(0, 0);   if (Hour > 12) { //13:00 to 23:59 is changed to 1:00p-11:59p   Hour -= 12;  ap = 'P';  if (Hour <= 9) {  lcd.print(' ');  }  lcd.print(Hour, DEC);  }  else if (Hour == 0) { //0:00 to 0:59 is 12:00a-12:59a  Hour = 12;  ap = 'A';  lcd.print(Hour, DEC);  }  else if (Hour == 12) { //at 12, am becomes pm  ap = 'P';  lcd.print(Hour, DEC);  }  else { //displays all other times (1:00a-11:59a)  ap = 'A';  if (Hour <= 9) {  lcd.print(' ');  }  lcd.print(Hour, DEC);  }  lcd.print(':');   if ((Minute >= 0) && (Minute <= 9)) {  lcd.print('0');  }  lcd.print(Minute, DEC); //displays minute  lcd.print(':');  if ((Second >= 0) && (Second <= 9)) {  lcd.print('0');  }  lcd.print(Second, DEC); //displays second   lcd.print(ap); //displays 'A' for am and 'P' for pm  if ((Minute == 0) && (Second == 0)) { //at every hour sound the chime  fullHour();  } }  //displays the month, date, and two digit year, after time-zone conversion void displayDate() {  lcd.setCursor(0, 1);  if (Month < 10) {  lcd.print(' ');  }  lcd.print(Month, DEC); lcd.print('/');  lcd.print(Day, DEC); lcd.print("/");  lcd.print(Year, DEC); // the year 2001 is displayed as "01"  }  //get the raw year, month, day, hour, minute, second from GPS (GMT) void getTime() {  Year = GPS.year;  Month = GPS.month;  Day = GPS.day;  Hour = GPS.hour;  Minute = GPS.minute;  Second = GPS.seconds; }  //convert to your time zone //this code was created by JeonLab, some variables have been changed //http://www.instructables.com/id/GPS-time-UTC-to-local-time-conversion-using-Arduin/?ALLSTEPS void conversion() {   if (Year%4 == 0) DaysAMonth[1] = 29; //leap year check  Hour += TimeZone;   if (Month * 100 + Day >= DSTbegin[Year - 13] &&  Month * 100 + Day < DSTend[Year - 13]) Hour += 1;  if (Hour < 0)  {  Hour += 24;  Day -= 1;  if (Day < 1)  {  if (Month == 1)  {  Month = 12;  Year -= 1;  }  else  {  Month -= 1;  }  Day = DaysAMonth[Month - 1];  }  }  if (Hour >= 24)  {  Hour -= 24;  Day += 1;  if (Day > DaysAMonth[Month - 1])  {  Day = 1;  Month += 1;  if (Month > 12) Year += 1;  }  }  }  //reads the indoor temperature from the sensor and displays it void checkTemp() {   float t = dht.readTemperature();   float f = dht.readTemperature(true);    lcd.print(' ');  lcd.print(int(f));  lcd.write(byte(0));  lcd.print('F'); }  //reads the relative humidity from the sensor and displays it void checkHum() {  float h = dht.readHumidity();  lcd.print(" RH ");  lcd.print(int(h));  lcd.print("%"); }  //sounds a chime every hour //the display shows the hour, a/p, and a bell during the chime void fullHour() {  suspendSec = true;  lcd.clear();  lcd.print(Hour);  lcd.print(ap);  lcd.print(' ');  lcd.write(byte(1));   //number of times chime plays is equal to the hour  for (int chimenum = 1; chimenum <= Hour; chimenum++) {   tone(11, NOTE_E5, 1000);  delay(1000);  noTone(11);  delay(2000);   }  suspendSec = false;  lcd.clear(); }  //displays the integer longitude and latitude in degrees, and the altitude in meters void displayLocation() {  // Serial.print("Location: ");  lcd.setCursor(0, 0);  lcd.print(int(GPS.latitudeDegrees));  lcd.write(byte(0));  lcd.print(" ");  lcd.print(int(GPS.longitudeDegrees));  lcd.write(byte(0));  lcd.print(' ');    lcd.print(int(GPS.altitude));  lcd.print('m');  }  //calculates and displays the heat index from the temp sensor, using temp and humidity void heatIndex() {  lcd.setCursor(0, 0);  float f = dht.readTemperature(true);  float h = dht.readHumidity();  float hif = dht.computeHeatIndex(f, h);  lcd.setCursor(0, 1);  lcd.print("HIndex ");  lcd.print(hif); }  //calculates the day of year a date is (ex. Jan 31 is 31st day, Dec 31 is 365th or 366th day) // This code is from: https://gist.github.com/jrleeman/3b7c10712112e49d8607 //params: day, month, year //returns day of year int calculateDayOfYear(int dy, int mnth, int yr) {   // Given a day, month, and year (4 digit), returns  // the day of year. Errors return 999.   int daysInMonth[] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};   // Verify we got a 4-digit year  if (yr < 1000) {  return 999;  }   // Check if it is a leap year, this is confusing business  // See: https://support.microsoft.com/en-us/kb/214019  if (yr % 4 == 0) {  if (yr % 100 != 0) {  daysInMonth[1] = 29;  }  else {  if (yr % 400 == 0) {  daysInMonth[1] = 29;  }  }  }   // Make sure we are on a valid day of the month  if (dy < 1)  {  return 999;  } else if (dy > daysInMonth[mnth - 1]) {  return 999;  }   int doy = 0;  for (int i = 0; i < mnth - 1; i++) {  doy += daysInMonth[i];  }   doy += dy;  return doy; }  //displays the closest birthday in the future //the dates must be modified for your personal birthday(s) //the default is four birthdays void nextBirthday() {  getTime();  conversion();  int nextBday;  int fullYear = 2000 + Year;  int Jbday = calculateDayOfYear(1, 1, fullYear); //January 1, John's birthday  int Rbday = calculateDayOfYear(1, 2, fullYear); //February 1, Robert's birthday   int Sbday = calculateDayOfYear(1, 3, fullYear); //March 1, Sarah's birthday  int Mbday = calculateDayOfYear(1, 4, fullYear); //April 1, Mary's birthday  int today = calculateDayOfYear(Day, Month, fullYear);   if (today > Jbday) Jbday += 365;  if (today > Rbday) Rbday += 365;  if (today > Sbday) Sbday += 365;  if (today > Mbday) Mbday += 365;   //find out the number of days to next birthday  int bdayarray[4] = {Jbday - today, Rbday - today, Sbday - today, Mbday - today};  for (int i = 1; i < sizeof(bdayarray); i++) {  if (bdayarray[i] < bdayarray[0]) {  nextBday = bdayarray[i];  }  else {  nextBday = bdayarray[0];  }  }  lcd.clear();  lcd.setCursor(0, 0);  if (nextBday == bdayarray[0]) lcd.print("Johns ");  else if (nextBday == bdayarray[1]) lcd.print("Roberts ");  else if (nextBday == bdayarray[2]) lcd.print("Sarahs ");  else if (nextBday == bdayarray[3]) lcd.print("Marys ");  lcd.print("Birthday");  lcd.setCursor(0, 1);  lcd.print("In ");  lcd.print(nextBday);  lcd.print(" days");  delay(1000);  }  //displays a time-based greeting void greeting() {  getTime();  conversion();  lcd.clear();  lcd.setCursor(0, 0);  if ((Hour >= 5) && (Hour < 12)) lcd.print("Good morning!"); //5am-11:59am  else if ((Hour >= 12) && (Hour < 17)) lcd.print("Good afternoon!"); //12pm-4:59pm  else if ((Hour >= 17) && (Hour < 21)) lcd.print("Good evening!"); //5pm-8:59pm  else if ((Hour >= 21) && (Hour < 24)) lcd.print("Good night!"); //9pm-11:59pm  else if ((Hour >= 0) && (Hour < 5)) lcd.print("Good night!"); //12am-4:59am  }  //display the outdoor temp, and today's high and low from Raspberry Pi void showWeather() {  for (int i = 0; i < sizeof(wea); i++) {  wea[i] = Serial.read();  }  lcd.clear();  lcd.setCursor(0, 0);  lcd.print("Out Temp ");  lcd.print(wea[0]);  lcd.print(wea[1]);  lcd.write(byte(0));  lcd.print("F");  lcd.setCursor(0, 1);  lcd.print("Today ");  lcd.print(wea[2]);  lcd.print(wea[3]);  lcd.write(byte(0));  lcd.print("/");  lcd.print(wea[4]);  lcd.print(wea[5]);  lcd.write(byte(0)); }