// MCU BASIC: https://www.basic4mcu.com
// DateTime : 2019-05-27 오후 3:24:35
// by Ok-Hyun Park
//
제가 일정수치 이상의 근전도 수치를 받으면 소리가 꺼지게 하고 싶은데
while(free); 이 부분을
disital.write(8,LOW)
noTone(8)로 바꿔봣는데 스피커가 안꺼져서
loop가 완전 끝나는 코드를 넣엇습니다.그랫더니 LCD의 현재시간 또한 꺼지는데 
혹시 어떻게 해야 스피커만 꺼지게 할 수 있는지  알 수 있을까요?ㅠㅠㅠㅠ
//
//<슬레이브코드>
#include <LiquidCrystal.h>
LiquidCrystal lcd(12,11,5,4,3,2); //RS 핀,E핀,데이터 핀 4개
//
#include "pitches.h"
int melody[]={NOTE_C4,NOTE_G3,NOTE_G3,NOTE_A3,NOTE_G3,0,NOTE_B3,NOTE_C4};
int noteDurations[]={4,8,8,4,4,4,4,4};
//
#include <swRTC.h>
swRTC rtc;
//
#include <SoftwareSerial.h>
SoftwareSerial mySerial(9,10); //블루투스의 Tx,Rx핀을 2번 3번핀으로 설정
//
int piezo=8,switchPin=9;
//
char incomingByte;   // 수신 데이터를 저장하는 변수
String lcdString=""; // 객체 선언: 출력 할 글자 저장
int counter=0,temp;
//
void Set_AMPM(int hour){ //AM PM을 구분해 주는 함수
  if(hour>=12)lcd.print("PM"); else lcd.print("AM");
  lcd.print(hour%12,DEC);
}
//
void Set_lowThanTen(int time){ if(time<10)lcd.print("0"); lcd.print(time); } //10보다 작은수를 출력할때 앞에 0을 출력하게 하는 함수
//
int checkTheAlarmClock(int time){ //유효한 알람시간인지 체크하는 함수
  if(time/100<24&&time%100<60){ Serial.println("Success"); return time; }
  else                        { Serial.println("Failed");  return 0; }
}
//
void checkTheAlarmTime(int alarmHour,int alarmMinute){ //알람이 울릴시간인지 체크하는 함수
  if(alarmHour==rtc.getHours()&&alarmMinute==rtc.getMinutes()){
    for(int thisNote=0; thisNote<8; thisNote++){
      int noteDuration=1000/noteDurations[thisNote];
      tone(8,melody[thisNote],noteDuration);
      int pauseBetweenNotes=noteDuration*1.30;
      delay(pauseBetweenNotes);
      noTone(8);
    }
  }
}
//
void setup(){
  pinMode(8,OUTPUT); pinMode(piezo,OUTPUT); pinMode(switchPin,INPUT_PULLUP);
  lcd.begin(16,2); lcd.clear();
  rtc.stopRTC(); rtc.setTime(10,05,30); rtc.setDate(27,5,2019); rtc.startRTC();
  Serial.begin(9600); while(!Serial){} Serial.println("Hello World!");
  mySerial.begin(9600); //블루투스
}
//
void loop(){
  char theDay[4]; int i=0,day; int stop=0;
  //
  lcd.setCursor(0,0); Set_AMPM(rtc.getHours()); //1초 단위로 갱신하며 현재시간을 LCD에 출력
  lcd.print(": ");    Set_lowThanTen(rtc.getMinutes());
  lcd.print(": ");    Set_lowThanTen(rtc.getSeconds());
  lcd.print("[");     Set_lowThanTen(rtc.getMonth()); lcd.print("/"); Set_lowThanTen(rtc.getDay()); lcd.print("]"); //날짜를 LCD에 출력
  lcd.setCursor(0,1); lcd.print("Alarm "); Set_AMPM(1000/100); lcd.print(": "); //세팅된 알람시간을 LCD에 출력
  Set_lowThanTen(0006%100);
  lcdString=""; lcd.print("               "); delay(1000); //1초마다 LCD갱신 //문자열 초기화 //전 글씨 삭제
  if(stop==0)checkTheAlarmTime(temp/100,temp%100);         //알람이 울릴 시간인지 체크
  //
  if(Serial.available()){ //시리얼 통신을 통해 알람시간을 입력받고 시리얼 모니터에 출력
    while(Serial.available()){ theDay[i]=Serial.read(); i++; }
    day=atoi(theDay);
    if(day/100>=12){ Serial.print("PM"); Serial.print((day/100)-12); }
    else           { Serial.print("AM"); Serial.print(day/100); }
    Serial.print(": ");
    if(day%100<10)Serial.print("0");
    Serial.println(day%100);
    temp=checkTheAlarmClock(day);
  }
  //스위치버튼이 눌렸을 경우 피에조센서의 소리를 0으로 하고 알람시간을 초기화 한다
  if(mySerial.available()){       //블루투스에서 넘어온 데이터가 있다면
    incomingByte=mySerial.read(); //날라온 데이터를 읽기
    Serial.print(incomingByte);
    //날라온 데이터를 읽기
    if(incomingByte=='1')counter++;
    if(counter==4){ stop=1; }
  }
}
//