Programmable Wireless Room Thermostat (Bluetooth Accessible)

//   WIRELESS ROOM THERMOSTAT v1.0 (RECEIVER)
//
//  Writer: Tamer Savaşcı
//  Date: 27.01.2017
//
//  email: tsavasci@yahoo.com


#include <SPI.h>
#include <nRF24L01p.h>
#include <virtuabotixRTC.h>
#include <SoftwareSerial.h>
SoftwareSerial bluetoothModule(A0, A1);
/* Arduino  ->  Bluetooth module
  A0 (Rx)   ->  Tx
  A1 (Tx)   ->  Rx
*/

nRF24L01p receiver(7, 8);            // CSN = 7, CE = 8
virtuabotixRTC myRTC(5, 4, 3);    // SCLK = 5, I/O(DAT) = 4, CE = 3

int relay = 2;
float set_temp;
float room_temp;
char BT_readChar;
int relay_status = 0;
int BT_Force = 0;

void BT ()
{
  BT_readChar = bluetoothModule.read();
  switch (BT_readChar)
  {
    case 'a':
      BT_Force = 1;
      digitalWrite(relay, HIGH);
      relay_status = 1;
      Serial.println("Forced mode: on");
      bluetoothModule.println("Forced mode: on");
      break;

    case 'b':
      BT_Force = 0;
      Serial.println("Combi is waiting RF command by Bluetooth command");
      bluetoothModule.println("Combi is waiting RF command by Bluetooth command");
      break;
  }
}

void time_function()
{
  myRTC.updateTime();
  Serial.print("Date / Time : ");
  Serial.print(myRTC.dayofmonth);
  Serial.print("/");
  Serial.print(myRTC.month);
  Serial.print("/");
  Serial.print(myRTC.year);
  Serial.print(" ");
  Serial.print("(");
  Serial.print(myRTC.dayofweek);
  Serial.print(")");
  Serial.print(" ");
  Serial.print(myRTC.hours);
  Serial.print(":");
  Serial.print(myRTC.minutes);
  Serial.print(":");
  Serial.println(myRTC.seconds);
  delay(3000);
}

void RF()
{
  while (receiver.available())         // while receiver active
  {
    receiver.read();
    receiver.rxPL(room_temp);           // read receiver
    digitalRead(BT_Force);
    if (BT_Force == 0)
    {
      if (set_temp > room_temp)             // if "set_temp" value bigger than "room temp"
      {
        digitalWrite(relay, HIGH);      // trigger the relay
        relay_status = 1;
        Serial.println("Combi opened due to RF temp data"); // Combi is ON
        Serial.println();
        bluetoothModule.println("Combi opened due to RF temp data");
        bluetoothModule.println();
        digitalRead(BT_Force);
      }
      else                             // otherwise cut the power of relay
      {
        digitalWrite(relay, LOW);
        relay_status = 0;
        Serial.println("Combi closed due to RF temp data"); // combi is OFF
        Serial.println();
        bluetoothModule.println("Combi closed due to RF temp data");
        bluetoothModule.println();
        digitalRead(BT_Force);
      }
    }
    else
    {
      Serial.println("Combi is working in forced mode by Bluetooth command");
      bluetoothModule.println("Combi is working in forced mode by Bluetooth command");
    }
  }
}

void seri()
{
  Serial.print("set_temp: ");
  Serial.println(set_temp);
  Serial.print("Room temp: ");
  Serial.println(room_temp);
  Serial.print("BT Forced status: ");
  Serial.println(BT_Force);
  Serial.println ();
}

void BT_info()
{
  bluetoothModule.print("set_temp: ");
  bluetoothModule.println(set_temp);
  bluetoothModule.print("Room temp: ");
  bluetoothModule.println(room_temp);
  bluetoothModule.println();
  if (relay_status < 1)
  {
    bluetoothModule.println("Combi:On");
    bluetoothModule.println ();
  }
  else
  {
    bluetoothModule.println("Combi:Off");
    bluetoothModule.println ();
  }
}

void setup()
{
  bluetoothModule.begin(9600);
  Serial.begin(9600);
  SPI.begin();
  SPI.setBitOrder(MSBFIRST);
  receiver.channel(90);
  receiver.RXaddress("Tamer");
  receiver.init();
  pinMode (2, OUTPUT);
  //myRTC.set_tempDS1302Time(00, 19, 01, 04, 9, 03, 2017);  // This line is for the first upload to arduino than deactive it with (//)
}

void loop()
{
  time_function();
  while (myRTC.dayofweek < 6)
  {
    while (myRTC.hours < 6)
    {
      time_function();
      set_temp = 19;                        // set_temp combi to 19
      Serial.println("Weekdays");
      Serial.println("Gece Modu");
      seri();
      bluetoothModule.println("Weekdays");
      bluetoothModule.println("Gece Modu");
      BT_info();
      RF();
      BT();
    }
    while (myRTC.hours < 8)
    {
      time_function();
      set_temp = 22;
      Serial.println("Weekdays");
      Serial.println("Uyanis Modu");
      seri();
      bluetoothModule.println("Weekdays");
      bluetoothModule.println("Uyanis Modu");
      BT_info();
      RF();
      BT();
    }
    while (myRTC.hours < 17)
    {
      time_function();
      set_temp = 19;
      Serial.println("Weekdays");
      Serial.println("Home is empty");
      seri();
      bluetoothModule.println("Weekdays");
      bluetoothModule.println("Home is empty");
      BT_info();
      RF();
      BT();
    }
    while (myRTC.hours >= 17)
    {
      time_function();
      set_temp = 22;
      Serial.println("Weekdays");
      Serial.println("People in the house");
      seri();
      bluetoothModule.println("Weekdays");
      bluetoothModule.println("People in the house");
      BT_info();
      RF();
      BT();
    }
  }
  while (myRTC.dayofweek < 8)
  {
    while (myRTC.hours <= 7)
    {
      time_function();
      set_temp = 19;
      Serial.println("Weekend");
      Serial.println("Gece Modu");
      seri();
      bluetoothModule.println("Weekend");
      bluetoothModule.println("Gece Modu");
      BT_info();
      RF();
      BT();
    }
    while (myRTC.hours > 7)
    {
      time_function();
      set_temp = 22;
      Serial.println("Weekend");
      Serial.println("People in the house");
      seri();
      bluetoothModule.println("Weekend");
      bluetoothModule.println("People in the house");
      BT_info();
      RF();
      BT();
    }
  }
}