clock_kong final ver-1

#include "SevSeg.h"
#include <Wire.h>
#include <TimeLib.h>
#include <DS1307RTC.h>
SevSeg Display;

#define NOTE_C4  262
#define NOTE_D4  294
#define NOTE_E4  330
#define NOTE_F4  349
#define NOTE_G4  392
#define NOTE_A4  440
#define NOTE_AS4 466
#define NOTE_C5  523

int melody[] = {

  NOTE_C4,4, NOTE_C4,8,
  NOTE_D4,-4, NOTE_C4,-4, NOTE_F4,-4,
  NOTE_E4,-2, NOTE_C4,4, NOTE_C4,8,
  NOTE_D4,-4, NOTE_C4,-4, NOTE_G4,-4,
  NOTE_F4,-2, NOTE_C4,4, NOTE_C4,8,
  NOTE_C5,-4, NOTE_A4,-4, NOTE_F4,-4,
  NOTE_E4,-4, NOTE_D4,-4, NOTE_AS4,4, NOTE_AS4,8,
  NOTE_A4,-4, NOTE_F4,-4, NOTE_G4,-4,
  NOTE_F4,-2,

};
int buzzer = A1;
int notes = sizeof(melody) / sizeof(melody[0]) / 2;
int wholenote;
int divider = 0, noteDuration = 0;
int baothuc1lanthoi;


const int ledPin =  A0;
unsigned long currentMillis;
int ledState = LOW;
unsigned long previousMillis = 0;
const long interval = 500;
unsigned long Millis1;

const int  Mode_btn = 1;
const int  btn2 = A2;
const int  btn3 = A3;
const int  btn4 = A4;

int State_btn1 = 0;
int State_btn2 = 0;
int State_btn3 = 0;
int State_btn4 = 0;
int PushCounter_btn1 = 0;
int lastState_btn1 = 1;
int lastState_btn2 = 1;
int lastState_btn3 = 1;

unsigned int Time;
unsigned int Time_alarm;
unsigned int hrs_alarm = 21;
unsigned int min_alarm = 26;


void setup()
{
  pinMode(ledPin, OUTPUT);
  pinMode(buzzer, OUTPUT);
  byte numDigits = 4;
  byte digitPins[] = {10, 11, 12, 13};
  byte segmentPins[] = {2, 3, 4, 5, 6, 7, 8, 9};
  bool resistorsOnSegments = true;
  bool updateWithDelaysIn = true;
  byte hardwareConfig = COMMON_ANODE;
  Display.begin(hardwareConfig, numDigits, digitPins, segmentPins, resistorsOnSegments);
  Display.setBrightness(100);

  pinMode(Mode_btn, INPUT_PULLUP);
  pinMode(btn2, INPUT_PULLUP);
  pinMode(btn3, INPUT_PULLUP);
  pinMode(btn4, INPUT_PULLUP);

  Serial.begin(57600);
}

void sound_alarm(int speed) {

  wholenote = (60000 * 4) / speed;
  // iterate over the notes of the melody.
  // Remember, the array is twice the number of notes (notes + durations)
  for (int thisNote = 0; thisNote < notes * 2; thisNote = thisNote + 2) {

    // calculates the duration of each note
    divider = melody[thisNote + 1];
    if (divider > 0) {
      // regular note, just proceed
      noteDuration = (wholenote) / divider;
    } else if (divider < 0) {
      // dotted notes are represented with negative durations!!
      noteDuration = (wholenote) / abs(divider);
      noteDuration *= 1.5; // increases the duration in half for dotted notes
    }

    // we only play the note for 90% of the duration, leaving 10% as a pause
    tone(buzzer, melody[thisNote], noteDuration * 0.9);

    // Wait for the specief duration before playing the next note.
    delay(noteDuration);

    // stop the waveform generation before the next note.
    noTone(buzzer);
  }
}

void loop(){
  // Led nhấp nháy theo giây
  unsigned long currentMillis = millis();
  if (currentMillis - previousMillis >= interval)
  {
    previousMillis = currentMillis;
    if (ledState == LOW)
    {
      ledState = HIGH;
    }
    else
    {
      ledState = LOW;
    }
    digitalWrite(ledPin, ledState);
  }
 // Đặt giờ
  tmElements_t tm;
  if (RTC.read(tm))
  {
    Time = tm.Hour * 100 + tm.Minute;
  }

 // Đặt giờ báo thức __________________________________________________
  if (hrs_alarm == 24){
    hrs_alarm = 0;
  }
  if (min_alarm == 60){
    min_alarm = 0;
    hrs_alarm++;
  }
  Time_alarm = hrs_alarm*100+ min_alarm;
 //__________________________________________________

  if (millis() - Millis1 >= 500){
  State_btn1 = digitalRead(Mode_btn); Serial.println(PushCounter_btn1);
  State_btn2 = digitalRead(btn2); Serial.print(State_btn2);
  State_btn3 = digitalRead(btn3); Serial.print(State_btn3);
  State_btn4 = digitalRead(btn4); Serial.println(State_btn4);
   if (State_btn1 != lastState_btn1) {
    if (State_btn1 == HIGH) {
      PushCounter_btn1++;
    }
  }
  lastState_btn1 = State_btn1;
  Millis1 = millis();
  }
  if (PushCounter_btn1 % 2 == 0) {  //Chia hết cho 2 ~~> hiện giờ
    Display.setNumber(Time,2);
  }
  else if (PushCounter_btn1 % 2 == 1) { //Chia 2 dư 1 ~~> chỉnh báo thức
    Display.setNumber(Time_alarm,2);
    if (State_btn2 != lastState_btn2)
    {
      if (State_btn2 == HIGH) {
        hrs_alarm= hrs_alarm +1;}
      lastState_btn2 = State_btn2;
    }
    if (State_btn3 != lastState_btn3)
    {
      if (State_btn3 == HIGH) {
        min_alarm= min_alarm +1;}
      lastState_btn3 = State_btn3;
    }
  }
 if (Time == Time_alarm) {
   if (baothuc1lanthoi == 0)
   {
     sound_alarm(140);
     sound_alarm(160);
     sound_alarm(190);
     sound_alarm(220);
     baothuc1lanthoi++;
   }
 }
  Display.refreshDisplay();
}