Arduino 上手教程
2. 设备开发 & 案例程序
3. M5Unified
5. 拓展模块 & 案例
Atom DTU
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PaperS3 Buzzer 蜂鸣器
PaperS3 蜂鸣器相关API与案例程序。
案例程序
编译要求
- M5Stack 板管理版本 >= 2.1.4
- 开发板选项 = M5PaperS3
- M5Unified 库版本 >= 0.2.5
- M5GFX 库版本 >= 0.2.7
播放音阶
cpp
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#include <M5Unified.h>
#include <M5GFX.h>
void setup() {
M5.begin();
M5.Display.setRotation(0);
M5.Display.setFont(&fonts::DejaVu40);
M5.Display.print("\nStart playing\nmusical scale");
M5.Speaker.setVolume(200); // 0~255, bigger is louder
}
void loop() {
M5.update();
M5.Speaker.tone(880, 500); // frequency (Hz), duration (ms)
delay(500);
M5.Speaker.tone(990, 500);
delay(500);
M5.Speaker.tone(1120, 500);
delay(500);
M5.Speaker.tone(1180, 500);
delay(500);
M5.Speaker.tone(1320, 500);
delay(500);
M5.Speaker.tone(1480, 500);
delay(500);
M5.Speaker.tone(1650, 500);
delay(500);
M5.Speaker.tone(1760, 500);
delay(1000);
M5.Speaker.tone(1760, 500);
delay(500);
M5.Speaker.tone(1650, 500);
delay(500);
M5.Speaker.tone(1480, 500);
delay(500);
M5.Speaker.tone(1320, 500);
delay(500);
M5.Speaker.tone(1180, 500);
delay(500);
M5.Speaker.tone(1120, 500);
delay(500);
M5.Speaker.tone(990, 500);
delay(500);
M5.Speaker.tone(880, 500);
delay(1000);
}该程序将会播放 12345671、17654321 的音阶。
生日快乐歌
cpp
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// Happy birthday song
#include <M5Unified.h>
#include <M5GFX.h>
void setup() {
M5.begin();
M5.Display.setRotation(0);
M5.Display.setFont(&fonts::FreeMonoBold24pt7b);
M5.Display.print("\n\n Happy birthday\n to\n you\n\n\n");
M5.Display.print(" i i i\n |:|:|:|:|\n |||||||||||\n {~~~~~~~~~~~}\n [#############]\n |#############|\n |#############|\n \\_____________/\n");
M5.Speaker.setVolume(200); // 0~255, bigger is louder
}
void loop() {
M5.update();
playHappyBirthday();
}
void playHappyBirthday() {
int notes[] = {
1320, 1320, 1480, 1320, 0, 1760, 1650, 0,
1320, 1320, 1480, 1320, 0, 1980, 1760, 0,
1320, 1320, 2600, 2200, 0, 1760, 1650, 1480, 0,
2350, 2350, 2200, 1760, 0, 1980, 1760, 0
};
int durations[] = {
300, 300, 600, 400, 200, 600, 600, 300,
300, 300, 600, 400, 200, 600, 600, 300,
300, 300, 600, 400, 200, 600, 600, 600, 300,
300, 300, 600, 400, 200, 600, 600, 300
};
int count = sizeof(notes) / sizeof(int);
for (int i = 0; i < count; i++) {
if (notes[i] == 0) {
delay(durations[i]);
} else {
M5.Speaker.tone(notes[i], durations[i]);
delay(durations[i] + 30);
}
}
}该程序将会播放生日快乐歌，并在屏幕上显示一个蛋糕。
API
PaperS3 蜂鸣器部分使用了 M5Unified 库中的 Speaker_Class，更多相关的API可以参考下方文档：