noTone()
설명
tone() 에 의해 시작된 구형파의 발생을 멈춥니다. tone이 발생하고 있지 않을 때에는 아무 효과가 없습니다.
문법
noTone(pin)
매개변수
- pin: tone 생성을 멈출 핀
반환값
- 없음
예제 코드
Let's to play "Jingle Bells" song with Arduino.
Hardware Required
| 1 | × | Arduino UNO or Genuino UNO | |
| 1 | × | Piezo Buzzer | |
| 1 | × | Breadboard | |
| n | × | Jumper Wires |
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Wiring Diagram
Image is developed using Fritzing. Click to enlarge image
Arduino Code
/*
* Created by ArduinoGetStarted.com
*
* This example code is in the public domain
*
* Tutorial page: https://arduinogetstarted.com/ko/reference/notone
*/
#include "pitches.h"
// notes in the melody:
int melody[] = {
NOTE_E5, NOTE_E5, NOTE_E5,
NOTE_E5, NOTE_E5, NOTE_E5,
NOTE_E5, NOTE_G5, NOTE_C5, NOTE_D5,
NOTE_E5,
NOTE_F5, NOTE_F5, NOTE_F5, NOTE_F5,
NOTE_F5, NOTE_E5, NOTE_E5, NOTE_E5, NOTE_E5,
NOTE_E5, NOTE_D5, NOTE_D5, NOTE_E5,
NOTE_D5, NOTE_G5
};
// note durations: 4 = quarter note, 8 = eighth note, etc, also called tempo:
int noteDurations[] = {
8, 8, 4,
8, 8, 4,
8, 8, 8, 8,
2,
8, 8, 8, 8,
8, 8, 8, 16, 16,
8, 8, 8, 8,
4, 4
};
void setup() {
// iterate over the notes of the melody:
int size = sizeof(noteDurations) / sizeof(int);
for (int thisNote = 0; thisNote < size; thisNote++) {
// to calculate the note duration, take one second divided by the note type.
//e.g. quarter note = 1000 / 4, eighth note = 1000/8, etc.
int noteDuration = 1000 / noteDurations[thisNote];
tone(8, melody[thisNote], noteDuration);
// to distinguish the notes, set a minimum time between them.
// the note's duration + 30% seems to work well:
int pauseBetweenNotes = noteDuration * 1.30;
delay(pauseBetweenNotes);
// stop the tone playing:
noTone(8);
}
}
void loop() {
// no need to repeat the melody.
}
For more detailed instruction, see Arduino - Piezo Buzzer
※ 주의 및 경고:
여러 핀에서 다른 높이의 음을 내려면, 다음 핀에 대해 tone() 을 호출하기 전에 noTone() 을 호출해야 합니다.
더보기
- 언어 : pulseIn()
- 언어 : pulseInLong()
- 언어 : shiftIn()
- 언어 : shiftOut()
- 언어 : tone()
- 튜토리얼 : Arduino - Piezo Buzzer
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