How to make alarm with lcd,dfplayer,microsd adapter

How to make alarm with 1602 lcd, dfplayer and microsd adapter?
Codes please

Full specification, please.

USE THIS CODES
I want to add to this code.

#include <LiquidCrystal.h>;
const int rs = 12, en = 11, d4 = 6, d5 = 5, d6 = 4, d7 = 3;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

bool isAlarm = false, isStopwatch = false, isTimer = false;
const int led = 13;
const int pushbtn1 = 10;
const int pushbtn2 = 9;
const int pushbtn3 = 8;
const int pushbtn4 = 7;

int hour=10, minute=15, second=5, pis=0, mls=0, lastTime=0, now;
int hourAlarm=0, minuteAlarm=0, secondAlarm=0;
int mode=0;
int flag = 0, flagAlarm = 0; //indicates 0 = AM, 1 = PM

int btnstate1; //indicates pushbtn's state
int btnstate2;
int btnstate3;
int btnstate4;

void setup() {
lcd.begin(16, 2);
pinMode(pushbtn2, INPUT);
pinMode(pushbtn3, INPUT);
pinMode(pushbtn4, INPUT);
pinMode(pushbtn1, INPUT);
pinMode(led, OUTPUT);
Serial.begin(9600);
}

void loop(){
if(mode==0)clock();
else if(mode==1)setTime();
else if(mode==2)setAlarm();
else if(mode==3)setTimer();
else if(mode==4)stopwatch();
}

//////////*CHECKING FOR NEW SCREEN//////////
void checkState(){
btnstate1=digitalRead(pushbtn1);
btnstate2=digitalRead(pushbtn2);
btnstate3=digitalRead(pushbtn3);
btnstate4=digitalRead(pushbtn4);
if(btnstate1|btnstate2|btnstate3|btnstate4) {
if(btnstate1==1){
mode=1;
}
if(btnstate2==1){
mode=2;
}
if(btnstate3==1){
mode=3;
}
if(btnstate4==1){
mode=4;
}
}
else {
mode=0;
}
}

//////////*CLOCK//////////
void clock(){
lcd.setCursor(0,0);
lcd.print("What time is it?");
lcd.setCursor(0,1);
lcd.print("It's ");
if(hour<10)lcd.print("0");
lcd.print(hour);
lcd.print(":");
if(minute<10)lcd.print("0");
lcd.print(minute);
lcd.print(":");
if(second<10)lcd.print("0");
lcd.print(second);

if(flag==0) lcd.print(" AM");
if(flag==1) lcd.print(" PM");

checkState();
delay(200);
runningClock(&hour, &minute, &second, &now, &lastTime, &mls, &flag);
}

void runningClock(int* _hour,int* _minute, int* _second, int* _now, int* _lastTime, int* _mls, int* _flag){
int increHour=0;
_now=(millis());
_mls+=(_now-
_lastTime);
_lastTime=_now;

if(_mls >= 1000){
_second+=(_mls/1000);
_mls%=1000;
}
if(
_second >= 60){
_minute+=_second/60;
_second%=60;
}
if(
_minute >= 60){
increHour=
_minute/60;
_minute%=60;
}
if(increHour%24==0); //hour as before
else {
increHour%=24;
if(increHour<12){
if(
_hour==12){
_hour=increHour;
}
else if(
_hour+increHour>=12){
*_hour-=12;
_flag=_flag==0?1:0;
}
}
else{
_hour=((_hour+increHour)%12);
_flag=_flag==0?1:0;

}
if(*_flag==0 & *_hour==12)*_hour=0;
else if(*_flag==1 & *_hour==0)*_hour=12;

}
}

//////////*TIMESETTING//////////
void setTime() {
int *main_var;
int X, Y;
lcd.clear();

int currentChangeIn = 1; //1 is hour 2 is minute and so on
while(true)
{
lcd.setCursor(0,0);
lcd.print("Set Time");
lcd.setCursor(0,1);
if(hour<10)lcd.print("0");
lcd.print(hour);
lcd.print(":");
if(minute<10)lcd.print("0");
lcd.print(minute);
lcd.print(":");
if(second<10)lcd.print("0");
lcd.print(second);

if(flag==0) lcd.print(" AM");
if(flag==1) lcd.print(" PM");

btnstate1=digitalRead(pushbtn1);
btnstate2=digitalRead(pushbtn2);
btnstate3=digitalRead(pushbtn3);
btnstate4=digitalRead(pushbtn4);
if(btnstate1==1){
  mode=0;
  delay(200);
  break;
}
if(btnstate3==1){
  if(currentChangeIn==3)currentChangeIn=0;
  currentChangeIn+=1;
  delay(200);
}
if(currentChangeIn==1){
  main_var = &hour;
  X = 0;
  Y = 1;
 
  if(digitalRead(pushbtn2)==1){
    hour+=1;
    if(hour==13)hour=1;
    else if(hour==12 & flag==0)hour=0;
    delay(200);
  }
}
if(currentChangeIn==2){
  main_var = &minute;
  X = 3;
  Y = 1;
 
  if(digitalRead(pushbtn2)==1){
    minute+=1;
    if(minute==60)minute=0;
    delay(200);
  }
}
if(currentChangeIn==3){
  main_var = &second;
  X = 6;
  Y = 1;
 
  if(digitalRead(pushbtn2)==1){
    second+=1;
    if(second==60)second=0;
    delay(200);
  }
}
if(btnstate4==1){
  flag=flag==0?1:0;
  if(flag==0 & hour==12)hour=0;
  else if(flag==1 & hour==0)hour=12;
  delay(200);
}
blink(*main_var,X,Y);
runningClock(&hour, &minute, &second, &now, &lastTime, &mls, &flag);

}
}

//////////*ALARM//////////
void setAlarm() {
int *main_var;
int X, Y;
lcd.clear();

int currentChangeIn = 1; //1 is hour 2 is minute and so on
while(true)
{
lcd.setCursor(0,0);
lcd.print("Set Alarm");
lcd.setCursor(0,1);
if(hourAlarm<10)lcd.print("0");
lcd.print(hourAlarm);
lcd.print(":");
if(minuteAlarm<10)lcd.print("0");
lcd.print(minuteAlarm);
lcd.print(":");
if(secondAlarm<10)lcd.print("0");
lcd.print(secondAlarm);

if(flagAlarm==0) lcd.print(" AM");
if(flagAlarm==1) lcd.print(" PM");

btnstate1=digitalRead(pushbtn1);
btnstate2=digitalRead(pushbtn2);
btnstate3=digitalRead(pushbtn3);
btnstate4=digitalRead(pushbtn4);
if(btnstate1==1){
  mode=0;
  delay(200);
  break;
}
if(btnstate3==1){
  if(currentChangeIn==3)currentChangeIn=0;
  currentChangeIn+=1;
  delay(200);
}
if(currentChangeIn==1){
  main_var=&hourAlarm;
  X = 0;
  Y = 1;
 
  if(digitalRead(pushbtn2)==1){
    hourAlarm+=1;
    if(hourAlarm==13)hourAlarm=1;
    else if(hourAlarm==12 & flagAlarm==0)hourAlarm=0;
    delay(200);
  }
}
if(currentChangeIn==2){
  main_var=&minuteAlarm;
  X = 3;
  Y = 1;
 
  if(digitalRead(pushbtn2)==1){
    minuteAlarm+=1;
    if(minuteAlarm==60)minuteAlarm=0;
    delay(200);
  }
}
if(currentChangeIn==3){
  main_var=&secondAlarm;
  X = 6;
  Y = 1;
 
  if(digitalRead(pushbtn2)==1){
    secondAlarm+=1;
    if(secondAlarm==60)secondAlarm=0;
    delay(200);
  }
}
if(btnstate4==1){
  flagAlarm=flagAlarm==0?1:0;
  if(flagAlarm==0 & hourAlarm==12)hourAlarm=0;
  else if(flagAlarm==1 & hourAlarm==0)hourAlarm=12;
  delay(200);
}
blink(*main_var,X,Y);

}
isAlarm=true;
runningClock(&hour, &minute, &second, &now, &lastTime, &mls, &flag);
}

//////////*TIMER//////////
void setTimer() {
int minuteTimer=0, secondTimer=0, mlsTimer=0, lastTimeTimer;
int *main_var;
int X, Y;
lcd.clear();
int brFlag=0; //blinking stopper
int currentChangeIn = 2; //1 is hour 2 is minute and so on
while(true)
{
lcd.setCursor(0,0);
lcd.print("Set Timer");
lcd.setCursor(0,1);
if(minuteTimer<10)lcd.print("0");
lcd.print(minuteTimer);
lcd.print(":");
if(secondTimer<10)lcd.print("0");
lcd.print(secondTimer);

btnstate1=digitalRead(pushbtn1);
btnstate2=digitalRead(pushbtn2);
btnstate3=digitalRead(pushbtn3);
btnstate4=digitalRead(pushbtn4);
if(btnstate1==1){
  mode=0;
  delay(200);
  break;
}
if(btnstate3==1){
  currentChangeIn+=1;
  if(currentChangeIn==4)currentChangeIn=2;
  delay(200);
}
if(currentChangeIn==2){
  main_var=&minuteTimer;
  X = 0;
  Y = 1;
 
  if(digitalRead(pushbtn2)==1){
    minuteTimer+=1;
    delay(200);
  }
}
if(currentChangeIn==3){
  main_var=&secondTimer;
  X = 3;
  Y = 1;
 
  if(digitalRead(pushbtn2)==1){
    secondTimer+=1;
    if(secondTimer==60)secondTimer=0;
    delay(200);
  }
}
if(btnstate4==1){
  if(!isTimer)isTimer=true;
  else{
    isTimer=false;
  }
  brFlag=1;
  lastTimeTimer=millis();
  delay(200);
}
if(isTimer)runningTimer(&minuteTimer, &secondTimer, &mlsTimer, &lastTimeTimer);
if(minuteTimer==0&secondTimer==0)brFlag=0;
if(brFlag==0)blink(*main_var,X,Y);
delay(200);
runningClock(&hour, &minute, &second, &now, &lastTime, &mls, &flag);

}
}

void runningTimer(int* _minute, int* _second, int* _mls, int* _lastTime){
int _now=millis();
_mls+=(_now-_lastTime);
_lastTime=_now;
if(
_mls >= 1000){
_second-=(_mls/1000);
_mls%=1000;
}
if(
_second <= 0){
if(*_minute == 0 & *_second < 0){
isTimer=false;
digitalWrite(led, HIGH);
delay(3000);
digitalWrite(led, LOW);
_second=0;
}
else if(
_minute>0){
*_minute-=1;
*_second=59;
}
}
}

//////////*STOPWATCH//////////
void stopwatch(){
int hourStopwatch=0, minuteStopwatch=0, secondStopwatch=0, mlsStopwatch=0, lastTimeStopwatch=0;
lcd.clear();

while(true)
{
lcd.setCursor(0,0);
lcd.print("Stopwatch");
lcd.setCursor(0,1);
if(hourStopwatch<10)lcd.print("0");
lcd.print(hourStopwatch);
lcd.print(":");
if(minuteStopwatch<10)lcd.print("0");
lcd.print(minuteStopwatch);
lcd.print(":");
if(secondStopwatch<10)lcd.print("0");
lcd.print(secondStopwatch);

btnstate1=digitalRead(pushbtn1);
btnstate2=digitalRead(pushbtn2);
btnstate3=digitalRead(pushbtn3);
btnstate4=digitalRead(pushbtn4);
if(btnstate1==1){
  mode=0;
  delay(200);
  break;
}
if(btnstate2==1){
  isStopwatch=true;
  lastTimeStopwatch=millis();
  delay(200);
}
if(btnstate3==1){
  isStopwatch=false;
  delay(200);
}
if(btnstate4==1){
  isStopwatch=false;
  hourStopwatch=0;
  minuteStopwatch=0;
  secondStopwatch=0;
  delay(200);
}
if(isStopwatch)runningStopwatch(&hourStopwatch, &minuteStopwatch, &secondStopwatch, &lastTimeStopwatch, &mlsStopwatch);
runningClock(&hour, &minute, &second, &now, &lastTime, &mls, &flag);

}
}

void runningStopwatch(int* _hour,int* _minute, int* _second, int* _lastTime, int* _mls){
int increHour=0, _now;
_now=(millis());
_mls+=(_now-_lastTime);
*_lastTime=_now;

if(*_mls >= 1000){
_second+=(_mls/1000);
_mls%=1000;
}
if(
_second >= 60){
_minute+=_second/60;
_second%=60;
}
if(
_minute >= 60){
_hour=_minute/60;
_minute%=60;
}
if(
_hour>=12){
isStopwatch=false;
}
}

//////////*COMMON FUNCTION//////////
void blink(int main_var, int X, int Y){
lcd.setCursor(X, Y);
if(pis == 0){
if(main_var<10)lcd.print("0");
lcd.print(main_var);
delay(200);
}
if(pis == 1){
lcd.print(" ");
delay(200);
}
pis=(pis+1)%2;
}

//////////*THANK YOU//////////

See post #2.

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