Playing and Stopping .WAV audio file from SD card

Other Hardware Audio
1

Hello,

I would like to play an audio file (.WAV) from the SD card while there will a push button pressed and the audio will the played until the button is released. Means the audio will stop while the button is not pressed. I have wrote a simple code using TMRpcm library but the audio is not playing. But if I add a delay function then if I pressed the button the audio is playing as per the ms mentioned in the delay function. I am shearing my codes. Please help me to solve the issue.

Code without delay : Not playing the audio

#include <SD.h>
#include <TMRpcm.h>
#include <SPI.h>
#define SD_ChipSelectPin 53
int switch1 = 8;
TMRpcm audio;
void setup(){

  • audio.speakerPin = 5; // 5, 6, 11 or 46 on Mega, 9 on Uno, Nano, etc*
    pinMode (switch1, OUTPUT);

  • Serial.begin(9600);*

  • if (!SD.begin(SD_ChipSelectPin)) {*

  • Serial.println("SD fail"); *

  • return;*

  • }*

  • Serial.println("SD Pass");*

  • audio.play("fivesec.wav");*

  • delay(100); // Play an Audio at the startup*
    }
    *void loop(){ *

  • if (digitalRead(switch1) == HIGH)*

  • {*

  • Serial.println("Switch Pressed");*

  • Serial.println("SQUARE.wav");*

  • audio.play("SQUARE.wav",0);*

  • }*

  • else*

  • audio.stopPlayback();*
    }

Code with delay : playing the audio file with 100 ms delay

#include <SD.h>
#include <TMRpcm.h>
#include <SPI.h>
#define SD_ChipSelectPin 53
int switch1 = 8;
TMRpcm audio;
void setup(){

  • audio.speakerPin = 5; // 5, 6, 11 or 46 on Mega, 9 on Uno, Nano, etc*
    pinMode (switch1, OUTPUT);

  • Serial.begin(9600);*

  • if (!SD.begin(SD_ChipSelectPin)) {*

  • Serial.println("SD fail"); *

  • return;*

  • }*

  • Serial.println("SD Pass");*

  • audio.play("fivesec.wav");*

  • delay(100); // Play an Audio at the startup*
    }
    *void loop(){ *

  • if (digitalRead(switch1) == HIGH)*

  • {*

  • Serial.println("Switch Pressed");*

  • Serial.println("SQUARE.wav");*

  • audio.play("SQUARE.wav",0);*

  • delay(100); // Plays the audio file SQUARE.wav for 100 ms*

  • }*

  • else*

  • audio.stopPlayback();*
    }

2

There is a 'pause'. May be handy ?
take a look

3

put your code in code tags if you want help.

4

xl97:
put your code in code tags if you want help.

These are the codes I tried

Code without delay: Not playing the audio

#include <SD.h>
#include <TMRpcm.h>
#include <SPI.h>

#define SD_ChipSelectPin 53
int switch1 = 8;

TMRpcm audio;

void setup(){
 audio.speakerPin = 5;     // 5, 6, 11 or 46 on Mega, 9 on Uno, Nano, etc
pinMode (switch1, OUTPUT);
 Serial.begin(9600);
 if (!SD.begin(SD_ChipSelectPin)) {
   Serial.println("SD fail");  
   return;
 }
 
 Serial.println("SD Pass");
 audio.play("fivesec.wav");
 delay(100);                    // Play an Audio at the startup
}

void loop(){  
 if (digitalRead(switch1) == HIGH)
 {
 Serial.println("Switch Pressed");
 Serial.println("SQUARE.wav");
 audio.play("SQUARE.wav",0);
 }
 else 
 audio.stopPlayback();
}

Code with delay: playing the audio file with 100 ms delay

#include <SD.h>
#include <TMRpcm.h>
#include <SPI.h>

#define SD_ChipSelectPin 53
 int switch1 = 8;

TMRpcm audio;

void setup(){
  audio.speakerPin = 5;     // 5, 6, 11 or 46 on Mega, 9 on Uno, Nano, etc
pinMode (switch1, OUTPUT);
  Serial.begin(9600);
  if (!SD.begin(SD_ChipSelectPin)) {
    Serial.println("SD fail");  
    return;
  }
  
  Serial.println("SD Pass");
  audio.play("fivesec.wav");
  delay(100);                    // Play an Audio at the startup
}

void loop(){  
  if (digitalRead(switch1) == HIGH)
  {
  Serial.println("Switch Pressed");
  Serial.println("SQUARE.wav");
  audio.play("SQUARE.wav",0);
  delay(100); // Plays the audio file SQUARE.wav for 100 ms
  }
  else 
  audio.stopPlayback();
}

Please help me to play an audio that stops when the button is turned off

5

You want the pause function:-

audio.pause(); pauses/unpauses playback

From the web page @knut_ny posted.

6

Grumpy_Mike:
You want the pause function:-
From the web page @knut_ny posted.

Thank you for your advice. So, where I should apply the audio.pause() function?

Instead of "audio.play("SQUARE.wav",0);" or "audio.stopPlayback();" ?

7

You apply it while the sample is playing at the moment you want it to pause.