SD card access recover after AudioSourceSDFAT using.

[hash6iron]

Hello @pschatzmann,

I'm using AudioSourceSDFAT to access to the SD card for MP3 player (named source). And all is ok. But I have another access to the SD Card for others file browser actions (named sdf) that I finish (sdf.end()) previous to use "source".

Once I have finished to use the mp3 player, I do a "source.end()" and then "sdf.begin()" to recover file browser, but appear as "source" is still connected to the SD CARD because "sdf.begin()" fails.

How Can I do to uses both or safety dismount AudioSourceSDFAT without problems later?
thanks in advance.

[hash6iron]

Hello @pschatzmann .

The current problem is due to a update that you done in the library, because on previous version of audiotools (1.0.1) all works fine, but now is imposible to recover the access to the SD wit SDFAT library if you uses AudioSourceSDFAT, appears as AudioSourceSDFAT don't want to release the SD card.

Could you review it or help me?

[pschatzmann]

No change from my side (that I am aware of)! Maybe it is an change in the arduino core version or the sdfat version ?
You can try to install the old versions again to double check....

And please provide a small example sketch (and the error messages) to reproduce your issue.

ps. Why don't you just leave it open and use the SdFat32 provided by the getAudioFs() method ?
I also just committed an extension where you can provide an open SdFat32 via the AudioSourceSDFAT constructor.

[hash6iron]

I don't understand the solution that you recommend me. I'm going to pass you the code.

I'm using SDFat32 for the file browser. On the other side I have a mp3 player function playMP3() that I call by demand. In this function I define AudioSourceSDFAT because I don't see any other way to do that player object can read from SD, and all was working well but now appears that, when I finish the AudioSourceSDFAT and try to do SDFat32 begin, the Audio-kit halt and boot.

[hash6iron]

Here I piece of code. The error occurs in sdf.begin(..) at the end of this code. sdf is a SDFat32 object

void playMP3()
{
 // Configuracion de la fuente desde SD y audio
  SdSpiConfig sdcfg(PIN_AUDIO_KIT_SD_CARD_CS, SHARED_SPI, SD_SCK_MHZ(SD_SPEED_MHZ), &SPI);
  AudioSourceSDFAT source(FILE_LAST_DIR.c_str(), "mp3", sdcfg);
  AudioKitStream kit;
  MP3DecoderHelix decoder;
  MetaDataFilterDecoder metadatafilter(decoder);
  AudioPlayer player(source, kit, metadatafilter);
  audio_tools::Equalizer3Bands eq(kit);
  audio_tools::ConfigEqualizer3Bands cfg_eq;
  Boost boost(0.5);

  // Generamos la configuracion para la salida de audio del Audiokit
  auto cfg = kit.defaultConfig(TX_MODE);
  cfg.bits_per_sample = 16;
  cfg.channels = 2;
  cfg.sample_rate = 44100;
  cfg.buffer_size = bufferSize;

  // Configuramos el ecualizador
  cfg_eq = eq.defaultConfig();
  cfg_eq.setAudioInfo(cfg);
  cfg_eq.gain_low = EQ_LOW;
  cfg_eq.gain_medium = EQ_MID;
  cfg_eq.gain_high = EQ_HIGH;

  // Hacemos pasar el decoder por el ecualizador de bandas
  decoder.setOutput(eq);
  kit.begin(cfg);
  kit.setSpeakerActive(ACTIVE_AMP);
  kit.setVolume(MAIN_VOL / 100);
  // Player setting
  player.setVolume(1);
  player.setAutoNext(false);
  player.setBufferSize(bufferSize);

  //Equalizer starting
  eq.begin(cfg_eq);

  if (player.begin())
  {
    LAST_MESSAGE = "Audio ready to play";
   
    while (!STOP)
    {}

    // Liberamos todo
    player.end();  
    kit.end();
    decoder.end();
    source.end();
    metadatafilter.end();
    eq.end();

    delay(1000);

    // Recupero la SD para el resto de procesadores.
    if (!sdf.begin(sdcfg))
    {
      logln("");
      logln("Error recovering spi initialization");
    }
    else
    {
      sdf.chdir(FILE_LAST_DIR);
      logln("SPI recovered!");
      logln("File last dir: " + String(FILE_LAST_DIR));
    }
}

[hash6iron]

Is possible to pass SDFat32 to AudioSourceSDFAT? Then the initialization would be out of AudioSourceSDFAT and SdFat32 would be pass to the AudioSourceSDFAT

[pschatzmann]

Check my answer above!

[hash6iron]

Yes, I red. But all my project uses SDFat32 and I initialize and use in all the project, then this then is more easy to pass SdFat32 object to AudioSource DFat that opposite.

Could you implement any way to pass SDFat32 (AudioFS) to the AudioSourceSDFat object?

[pschatzmann]

I don't understand your comment: please check again: I was writing that this is supported now!

[hash6iron]

Ok. Sorry. How Can I do it?

"I also just committed an extension where you can provide an open SdFat32 via the AudioSourceSDFAT constructor."

[pschatzmann]

Just have a look at the documentation for this class!

[hash6iron]

ok. Thanks!