Speaker

begin()

Function:

Initialize the speaker

Syntax:

void begin()

Pay Attention:
1.If you don't want to use M5.begin() Initialize the speaker, please call this function before using the speaker

Example:

#include <M5Stack.h>

void setup(){
  M5.Speaker.begin(); //Initialize the speaker
  M5.Speaker.tone(661, 1000);    //Set the speaker to tone at 661Hz for 1000ms
}

void loop(){
  M5.Speaker.update();
  delay(100);
}

end()

Function:

Stop speaker

Syntax:

void end()

Example:

#include <M5Stack.h>

void setup(){
  M5.begin();
}

void loop(){
  M5.update();
  if(M5.BtnA.wasPressed()) {  //If ButtonA was pressed
    M5.Speaker.tone(661); //Set the speaker to tone continuously at 661Hz
  }else if(M5.BtnB.wasPressed()){
    M5.Speaker.end(); //Turn off the speaker
  }
  delay(100);
}

update()

Function:

Set the speaker for output

Syntax:

void update()

Pay Attention:
1.It needs to be used in conjunction with the sound function to make M5Core sound

Example:

#include <M5Stack.h>

void setup(){
  M5.Speaker.begin(); //Initialize the speaker
  M5.Speaker.tone(661, 1000);    //Set the speaker to tone at 661Hz for 1000ms
}

void loop(){
  M5.Speaker.update();
  delay(100);
}

tone()

Function:

Set the speaker to sound continuously at frequency / (Tone duration milliseconds)

Syntax:

void tone(uint16_t frequency)

void tone(uint16_t frequency, uint32_t duration)

Function parameter:

Example:

#include <M5Stack.h>

void setup(){
  M5.begin();
}

void loop(){
  M5.update();
  if(M5.BtnA.wasPressed()) {  //If buttonA was pressed
    M5.Speaker.tone(661, 200); //Set the speaker to tone 200ms at 661Hz
  }else if(M5.BtnB.wasPressed()){
    M5.Speaker.tone(112); //Set the horn to tone continuously at 112Hz
  }else if(M5.BtnC.wasPressed()){
    M5.Speaker.end(); //Turn off the speaker
  }
  delay(100);
}

setVolume()

Function:

Set volumn

void setVolume(uint8_t volume)

Function parameter:

Example:

#include <M5Stack.h>
char i = 0;
void setup(){
  M5.begin();
  M5.Speaker.begin();
}

void loop(){
  M5.update();
  if(M5.BtnA.wasPressed()) {  //If buttonA was pressed
    M5.Speaker.tone(661, 200); //Set the speaker to tone 200ms at 661Hz
  }else if(M5.BtnC.wasPressed()){
    M5.Speaker.setVolume(i++); //Set speaker volumn
  }
  delay(100);
}