/*
 * Lesson 105-1: Building Clock using DS1307 | Robojax Arduino Step By Step Course
 This code: Project 6: LED Seven Segment Clock using DS1307
In this lesson we learn how to use the DS1307 real-time clock module to build an Arduino clock. In this lesson, we learn about 7 projects.

Project 1: Basic DS1307 Clock with Arduino
Project 2: DS1307 Alarm with Buzzer and Relay
Project 3: DS1307 Alarm with Relay and AC Bulb
Project 4: LED Seven Segment Clock using DS1307
Project 5: Unlimited Alarm with Relay (this code)
Project 6: LCD Clock using DS1307
Project 7: LCD Clock with Alarm
 * Watch Video instruction for this code: https://youtu.be/gz9xqvRroDY
 *
 * This code is part of the Arduino Step by Step Course which starts here:  https://youtu.be/-6qSrDUA5a8
 *
 * For the library for this code, visit http://robojax.com/
 *
 If you found this tutorial helpful, please support me so I can continue creating
 content like this. Make a donation using PayPal or a credit card: https://bit.ly/donate-robojax

Written by Ahmad Shamshiri on Feb 07, 2021

 *  * This code is "AS IS" without warranty or liability. Free to be used as long as you keep this note intact.*
 * This code has been downloaded from Robojax.com
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.

  DS1307: RTCLib from Adafruit
   https://github.com/adafruit/RTClib/
  HT16k33 library
//  AUTHOR: Rob Tillaart
// VERSION: 0.1.0
// PURPOSE: demo
//     URL: http://www.adafruit.com/products/1002
//     URL: https://github.com/RobTillaart/HT16K33

*/


#include <Wire.h>
#include "RTClib.h"

RTC_DS1307 rtc;

int my_alarm[][6] ={
          //year, month, day, hour, minute, second
          {2022, 4, 11,   10, 19, 0},
          {2022, 4, 11,   10, 19, 10},
          {2022, 4, 11,   10, 19, 20},
          {2022, 4, 11,   10, 19, 30},
          };

const int alarmCount = sizeof(my_alarm) / sizeof(my_alarm[0]);
char alarmName[alarmCount][10] = {
        "Door", "Pet food", "Sleep", "Heater"
        };

//pins buzzer or relay is connected to
const int alarmPin[alarmCount] ={10, 11, 12, 13};
const int alarmResetPin =5;

bool debug=true;
bool showPrintAlarm = true;
const int relayType = LOW;//LOW or HIGH level trigger
const bool FORMAT_12=true;//if 12 hours set to true, for 24 hours set to false
int outputON, outputOFF;



char daysOfTheWeek[7][12] = {
        "Sunday", "Monday", "Tuesday",
        "Wednesday", "Thursday", "Friday", "Saturday"};
char monthName[12][12] = {
        "January", "February", "March",
        "April", "May", "June",
        "July", "August", "September",
        "October", "November", "December"
      };

int year, month, day, hour, minute, second;
boolean alarmStatus[alarmCount];

void setup () {
  while (!Serial); // for Leonardo/Micro/Zero

  Serial.begin(9600);
  if (! rtc.begin()) {
    Serial.println("Couldn't find RTC");
    while (1);
  }

  if (! rtc.isrunning()) {
    Serial.println("RTC is NOT running!");
    // following line sets the RTC to the date & time this sketch was compiled
    // rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
    // This line sets the RTC with an explicit date & time, for example to set
    // January 21, 2014 at 3am you would call:
     //rtc.adjust(DateTime(2019, 3, 3, 20, 0, 0));
  }
  rtc.adjust(DateTime(2019, 3, 3, 20, 0, 0));
   //rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));

  pinMode( alarmResetPin, INPUT_PULLUP);

  //based on relayType set outputON and outputOFF
  if(relayType)
  {
    outputON = HIGH;
    outputOFF = LOW;
  }else{
    outputON = LOW;
    outputOFF = HIGH;
  }
Serial.println("\t\tAlarms list");
  for(int i=0; i< alarmCount; i++)
  {

    Serial.print("Alarm-");
    Serial.print (i+1);
    Serial.print (" ");
    Serial.print (my_alarm[i][0]);
    Serial.print ("\t");
    Serial.print (monthName[my_alarm[i][1]-1]);
    Serial.print ("(");
    Serial.print (my_alarm[i][1]);
    Serial.print (")\t");
    Serial.print (my_alarm[i][2]);
    Serial.print ("\t");
    Serial.print (my_alarm[i][3]);
    Serial.print (":");
    Serial.print (my_alarm[i][4]);
    Serial.print (":");
    Serial.print (my_alarm[i][5]);
    Serial.print ("\tPin: ");
    Serial.println (alarmPin[i]);

    pinMode(alarmPin[i], OUTPUT);

    digitalWrite(alarmPin[i], outputOFF);//set output OFF initially

    alarmStatus[i]= false;//set initial status of alarm as false
  }
}//setup

void loop () {
    DateTime now = rtc.now();

    year = now.year();
    month = now.month();
     if(FORMAT_12)
    {
     hour = now.twelveHour();//12 hours format
    }else{
     hour = now.hour();//24 hour format
    }
    day = now.day();


    minute = now.minute();
    second = now.second();

      checkAlarm();
      if(debug){
    Serial.print(year, DEC);
    Serial.print('/');
    Serial.print(month, DEC);
    Serial.print('/');
    Serial.print(day, DEC);
    Serial.print(" (");
    Serial.print(daysOfTheWeek[now.dayOfTheWeek()]);
    Serial.print(") ");
    if(hour <10)
      Serial.print(0);
    Serial.print(hour, DEC);
    Serial.print(':');
    if(minute <10)
      Serial.print(0);
    Serial.print(minute, DEC);
    Serial.print(':');
    if(second <10)
      Serial.print(0);
    Serial.print(second, DEC);
     if(FORMAT_12)
    {
      if(now.isPM())
      {
         Serial.print("PM");
      }else{
          Serial.print("AM");
      }
    }
    Serial.println();

    delay(500);
      }
}//loop



void checkAlarm()
{

   for(int i=0; i< alarmCount; i++)
  {
    if(
      year   == my_alarm[i][0] &&
      month  == my_alarm[i][1] &&
      day    == my_alarm[i][2] &&
      hour   == my_alarm[i][3] &&
      minute == my_alarm[i][4] &&
      second == my_alarm[i][5] )
      {
       alarmAction(i);
       alarmStatus[i]=true;//report the status
      }
    alarmOFF(i);//check to see when alarm should be turned off

  }
}//checkAlarm()

void printAlarm (int i)
{
  if(showPrintAlarm){
    Serial.print("Alarm ");
    Serial.print (alarmName[i]);
    Serial.print(" on ");
    Serial.print (my_alarm[i][0]);
    Serial.print ("\t");
    Serial.print (monthName[my_alarm[i][1]-1]);
    Serial.print ("(");
    Serial.print (my_alarm[i][1]);
    Serial.print (")\t");
    Serial.print (my_alarm[i][2]);
    Serial.print ("\t at ");
    Serial.print (my_alarm[i][3]);
    Serial.print (":");
    Serial.print (my_alarm[i][4]);
    Serial.print (":");
    Serial.println (my_alarm[i][5]);
  }
}//printAlarm end

/*
 * alarmAction
 * turn the specific pin i associated to the alarm ON
 */
void alarmAction(int i)
{
    printAlarm (i);
    digitalWrite(alarmPin[i], outputON);


}//alarmAction end


/*
 * alarmOFF
 * Turns the specific alarm i off
 */
void alarmOFF (int i)
{



      if(digitalRead(alarmResetPin) ==LOW)
     {
      alarmStatus[i] = false;//change the status of particular alarm

       digitalWrite(alarmPin[i], outputOFF); //turn relay OFF

      if(debug)
      Serial.println("Alarm OFF");
     }

}//alarmOFF end