arduino ibox项目实战17－tonemelody实验

armeasy

硬件平台：PC机一台，ibox卡片电脑一只，arduino扩展板一个，喇叭或蜂鸣器一个

软件平台：WIN7操作系统，android4.0或android4.4系统

实验目标：通过ibox的PWM口控制喇叭或蜂鸣器实现播放音乐的功能。

打开arduino的IDE开发工具，依次点击文件->示例->02.Digital->toneMelody，toneMelody的示例程序将会被打开，其源码如下：

1. #include "pitches.h"
   
2. 
   
3. // notes in the melody:
   
4. int melody[] = {
   
5.   NOTE_C4, NOTE_G3, NOTE_G3, NOTE_A3, NOTE_G3, 0, NOTE_B3, NOTE_C4
   
6. };
   
7. 
   
8. // note durations: 4 = quarter note, 8 = eighth note, etc.:
   
9. int noteDurations[] = {
   
10.   4, 8, 8, 4, 4, 4, 4, 4
    
11. };
    
12. 
    
13. void setup() {
    
14. }
    
15. 
    
16. void loop() {
    
17.   // no need to repeat the melody.
    
18. 
    
19.   // iterate over the notes of the melody:
    
20.   for (int thisNote = 0; thisNote < 8; thisNote++) {
    
21. 
    
22.     // to calculate the note duration, take one second
    
23.     // divided by the note type.
    
24.     //e.g. quarter note = 1000 / 4, eighth note = 1000/8, etc.
    
25.     int noteDuration = 1000 / noteDurations[thisNote];
    
26.     tone(PWM0, melody[thisNote], noteDuration);
    
27. 
    
28.     // to distinguish the notes, set a minimum time between them.
    
29.     // the note's duration + 30% seems to work well:
    
30.     int pauseBetweenNotes = noteDuration * 1.30;
    
31.     delay(pauseBetweenNotes);
    
32.     // stop the tone playing:
    
33.     noTone(PWM0);
    
34.   }
    
35. }

复制代码

将喇叭或蜂鸣器通过杜绑线接到ibox扩展板的PWM口，点击上传按钮运行程序，喇叭或蜂鸣器将会有音乐播出。