Arduino Quick Start
2. Devices & Examples
3. M5Unified
5. Extensions & Examples
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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
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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);}This program will play the scales 12345671 and 17654321.
Happy Birthday Song
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); } }}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: