/***************************************************************************
  This is a library for the BME280 humidity, temperature & pressure sensor

  Designed specifically to work with the Adafruit BME280 Breakout
  ----> http://www.adafruit.com/products/2650

  These sensors use I2C or SPI to communicate, 2 or 4 pins are required
  to interface. The device's I2C address is either 0x76 or 0x77.

  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_Sensor.h>
#include <Adafruit_BME280.h>
#include <Time.h>
#include <Timezone.h>

#define BME_SCK 13
#define BME_MISO 12
#define BME_MOSI 11
#define BME_CS 9

Adafruit_BME280 bme(BME_CS); // hardware SPI

#include <RF24.h>

#define CE_PIN   8
#define CSN_PIN 10
const byte slaveAddress[5] = {'R','x','A','A','A'};
RF24 radio(CE_PIN, CSN_PIN); // Create a Radio

struct package
{
  int temperature ;
  int pressure;
  int humidity ;
  float rain;
  int rf_hh;
  int rf_mm;
  int rf_dd;
  int rf_mo;
  int rf_yy;
};
typedef struct package Package;
Package data;


unsigned long delayTime;

#include <Adafruit_GPS.h>
#include <SoftwareSerial.h>

SoftwareSerial mySerial(5, 4);

Adafruit_GPS GPS(&mySerial);

#define GPSECHO  false

boolean usingInterrupt = false;

TimeChangeRule CEST = {"CEST", Last, Sun, Mar, 2, 120};     // Central European Summer Time
TimeChangeRule CET = {"CET ", Last, Sun, Oct, 3, 60};       // Central European Standard Time
Timezone CE(CEST, CET);

const byte interruptPin = 3;
volatile byte buckettips = 0;
long debouncing_time = 500; //Debouncing Time in Milliseconds
volatile unsigned long last_micros;
int Res = 0;

void setup() {

  Serial.begin(115200);
    Serial.println(F("BME280 test"));

    bool status;


    status = bme.begin();
    if (!status) {
        Serial.println("Could not find a valid BME280 sensor, check wiring!");
        while (1);
    }

   Serial.println();
  pinMode(3, INPUT);
  attachInterrupt(digitalPinToInterrupt(interruptPin), bucketTipped, FALLING);

  GPS.begin(9600);


  GPS.sendCommand(PMTK_SET_NMEA_OUTPUT_RMCGGA);
  GPS.sendCommand(PMTK_SET_NMEA_UPDATE_1HZ);   // 1 Hz update rate
  GPS.sendCommand(PGCMD_ANTENNA);

  useInterrupt(true);

  mySerial.println(PMTK_Q_RELEASE);

  radio.begin();
  radio.setDataRate( RF24_250KBPS );
  radio.openWritingPipe(slaveAddress);

  delayTime = 1000;

  delay(1000);


}

// 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
}

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() {

    printValues();
      radio.write(&data, sizeof(data));
        // Always use sizeof() as it gives the size as the number of bytes.
        // For example if dataToSend was an int sizeof() would correctly return 2
    resetrain();
    delay(delayTime);
    Serial.write(27);       // ESC command
    Serial.print("[2J");    // clear screen command
    Serial.write(27);
    Serial.print("[H");     // cursor to home command

}


void printValues() {
    uint8_t hh, mm, ss, dd, mo, yy;
    Serial.println("---Start---");
    Serial.print("Temperature = ");
    int temp_int = bme.readTemperature();
    Serial.print(temp_int);
    Serial.println(" *C");
    data.temperature = temp_int;
    Serial.print("Pressure = ");
    int pres_int = (bme.readPressure() / 100.0F);
    Serial.print(pres_int);
    Serial.println(" hPa");
    data.pressure = pres_int;
    Serial.print("Humidity = ");
    int hum_int = bme.readHumidity();
    Serial.print(hum_int);
    Serial.println(" %");
    Serial.println();
    data.humidity = hum_int;
    Serial.print("Bucket tipped ");
    Serial.print(buckettips);
    Serial.println(" times");
    data.rain = buckettips * 0.33;
    Serial.print(data.rain);
    Serial.println(" mm of rain");

 // in case you are not using the interrupt above, you'll
  // need to 'hand query' the GPS, not suggested :(
  if (! usingInterrupt) {
  // read data from the GPS in the 'main loop'
     char c = GPS.read();
    // if you want to debug, this is a good time to do it!
    if (GPSECHO)
      if (c) Serial.print(c);
  }

  // if a sentence is received, we can check the checksum, parse it...
  if (GPS.newNMEAreceived()) {
    // a tricky thing here is if we print the NMEA sentence, or data
    // we end up not listening and catching other sentences!
    // so be very wary if using OUTPUT_ALLDATA and trytng to print out data
    //Serial.println(GPS.lastNMEA());   // this also sets the newNMEAreceived() flag to false

    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
  }



    Serial.print("\nTime: ");
    hh = GPS.hour;
    Serial.print(hh, DEC); Serial.print(':');
    mm = GPS.minute;
    Serial.print(mm, DEC); Serial.print(':');
    ss = GPS.seconds;
    Serial.println(ss, DEC);
    Serial.print("Date: ");
    dd = GPS.day;
    Serial.print(dd, DEC); Serial.print('/');
    mo = GPS.month;
    Serial.print(mo, DEC); Serial.print("-20");
    yy = GPS.year;
    Serial.println(yy, DEC);
    Serial.println();

    setTime(hh, mm, ss, dd, mo, yy);

    time_t utc = now();
//    local = myTZ.toLocal(utc, &tcr);
    printDateTime(CE, utc);

  }

// given a Timezone object, UTC and a string description, convert and print local time with time zone
void printDateTime(Timezone tz, time_t utc)
{
    uint8_t rf_hh, rf_mm, rf_dd, rf_mo, rf_yy;
    char buf[40];
    char m[4];    // temporary storage for month string (DateStrings.cpp uses shared buffer)
    TimeChangeRule *tcr;        // pointer to the time change rule, use to get the TZ abbrev

    time_t t = tz.toLocal(utc, &tcr);
    strcpy(m, monthShortStr(month(t)));
    sprintf(buf, "%.2d:%.2d:%.2d %d/%d-%d",
        hour(t), minute(t), second(t), day(t), month(t), year(t));
    Serial.println(buf);
    data.rf_hh = hour(t);
    data.rf_mm = minute(t);
    data.rf_dd = day(t);
    data.rf_mo = month(t);
    data.rf_yy = year(t);
    Serial.print("---End---");


}

void resetrain(){

if(data.rf_dd == 1)
{
if(data.rf_hh == 0)
{
if(data.rf_mm == 0)
{
if(Res == 0)
{
buckettips = 0;
Res = 1;
}
}
}
}

if(data.rf_dd == 1)
{
if(data.rf_hh == 0)
{
if(data.rf_mm == 1)
{
Res = 0;
}
}
}

}

void bucketTipped() {
  if((long)(micros() - last_micros) >= debouncing_time * 1000) {
  buckettips++;
  last_micros = micros();
   }
 }