/* ----- C Program for Arduino based Alarm Clock ---- */


#include <Wire.h>

#include<EEPROM.h>

#include <RTClib.h>

#include <LiquidCrystal.h>

const int rs = 8;
const int en = 9;
const int d4 = 10;
const int d5 = 11; //DISPLAY
const int d6 = 12;
const int d7 = 13;


LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

RTC_DS1307 RTC;

int temp,inc,hours1,minut,add=11;


int next=7;    

int INC=6;

int set_mad=5;


#define buzzer 3


int HOUR,MINUT,SECOND;


 

void setup()

{

 Wire.begin();

 RTC.begin();

 lcd.begin(16,2);

 pinMode(INC, INPUT);

 pinMode(next, INPUT);

 pinMode(set_mad, INPUT);

 pinMode(buzzer, OUTPUT);

 digitalWrite(next, HIGH);

 digitalWrite(set_mad, HIGH);

 digitalWrite(INC, HIGH);

 

   lcd.setCursor(0,0);

   lcd.print("Real Time Clock");

   lcd.setCursor(0,1);

   lcd.print("Circuit Digest ");

    delay(2000);

    

 if(!RTC.isrunning())

 {

 RTC.adjust(DateTime(__DATE__,__TIME__));

 }

}

 

void loop()

{

   int temp=0,val=1,temp4;

   DateTime now = RTC.now();

   if(digitalRead(set_mad) == 0)      //set Alarm time

   { 

     lcd.setCursor(0,0);

     lcd.print("  Set Alarm  ");

    delay(2000);

    defualt();

    time();

    delay(1000);

    lcd.clear();

    lcd.setCursor(0,0);

    lcd.print("  Alarm time ");

    lcd.setCursor(0,1);

    lcd.print(" has been set  ");

    delay(2000);

 }

 lcd.clear();

 lcd.setCursor(0,0);

 lcd.print("Time:");

 lcd.setCursor(6,0);

 lcd.print(HOUR=now.hour(),DEC); 

 lcd.print(":");

 lcd.print(MINUT=now.minute(),DEC);

 lcd.print(":");

 lcd.print(SECOND=now.second(),DEC);

 lcd.setCursor(0,1);

 lcd.print("Date: ");

 lcd.print(now.day(),DEC);

 lcd.print("/");

 lcd.print(now.month(),DEC);

 lcd.print("/");

 lcd.print(now.year(),DEC);

 match();

 delay(200);

}


void defualt()

{

  lcd.setCursor(0,1);

  lcd.print(HOUR);

  lcd.print(":");

  lcd.print(MINUT);

  lcd.print(":");

  lcd.print(SECOND);

}


/*Function to set alarm time and feed time into Internal eeprom*/


void time()                             

{

  int temp=1,minuts=0,hours=0,seconds=0;

    while(temp==1)

    {

     if(digitalRead(INC)==0)

     {

      HOUR++;

      if(HOUR==24)

      {

       HOUR=0;

      }

      while(digitalRead(INC)==0);

     }

     lcd.clear();

      lcd.setCursor(0,0);

    lcd.print("Set Alarm Time ");

   //lcd.print(x); 

    lcd.setCursor(0,1);

    lcd.print(HOUR);

    lcd.print(":");

    lcd.print(MINUT);

    lcd.print(":");

    lcd.print(SECOND);

    delay(100);

    if(digitalRead(next)==0)

    {

      hours1=HOUR;

      EEPROM.write(add++,hours1);

     temp=2;

     while(digitalRead(next)==0);

    }

    }

    

    while(temp==2)

    {

     if(digitalRead(INC)==0)

     {

      MINUT++;

      if(MINUT==60)

      {MINUT=0;}

      while(digitalRead(INC)==0);

     }

     // lcd.clear();

    lcd.setCursor(0,1);

    lcd.print(HOUR);

    lcd.print(":");

    lcd.print(MINUT);

    lcd.print(":");

    lcd.print(SECOND);

    delay(100);

      if(digitalRead(next)==0)

      {

       minut=MINUT;

       EEPROM.write(add++, minut);

       temp=0;

       while(digitalRead(next)==0);

      }

    }

    delay(1000);

}



/* Function to chack medication time */


void match()

{

  int tem[17];

  for(int i=11;i<17;i++)

  {

    tem[i]=EEPROM.read(i);

  }

  if(HOUR == tem[11] && MINUT == tem[12]) 

  {

   beep();

   beep();

   beep();

   beep();

   lcd.clear();

   lcd.print("Wake Up........");

   lcd.setCursor(0,1);

   lcd.print("Wake Up.......");

   beep();

   beep();

   beep();

   beep();

  }


}


/* function to buzzer indication */


void beep()

{

   digitalWrite(buzzer,HIGH);

   delay(500);

   digitalWrite(buzzer, LOW);

   delay(500);

}