Arduino Quick Start
2. Devices & Examples
NanoC6
3. M5Unified
5. Extensions & Examples
Unit
Atom DTU
Hat
PaperS3 Buzzer
PaperS3 buzzer related APIs and example programs.
Example Program
Build Requirements
- M5Stack board manager version >= 2.1.4
- Board selection = M5PaperS3
- M5Unified library version >= 0.2.5
- M5GFX library version >= 0.2.7
Play Musical Scale
cpp
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
#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);
}This program will play the scales 12345671 and 17654321.
Happy Birthday Song
cpp
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47
// 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);
}
}
}This program will play the Happy Birthday song and display a cake on the screen.
API
The buzzer part of PaperS3 uses the Speaker_Class from the M5Unified library. For more related APIs, please refer to the documentation below: