MP3 Loop

[Anonymous]

Hello!

Is there any neat function that provides looping of the current song?

Thank you

[Michael P. Flaga]

The below will repeat track one.


while(1) {
if(!MP3player.playTrack(1)) {
while (MP3player.isPlaying());
MP3player.stopTrack();
}
}


But it will block.

You can actually put

MP3player.playTrack(1);


in the loop and it will attempt to play track one, and if it is still playing it will simply respond with an error code. That can be ignored.

[Anonymous]

I did this

MP3player.playTrack(1);
while(MP3player.isPlaying()) {
MP3player.playTrack(1);
}

But I have a problem to change the track to a new with another selection, as for example:

MP3player.playTrack(buttonSelection);
while(MP3player.isPlaying()) {
MP3player.playTrack(buttonSelection);
}

Which means that I want to have the current track looped, until a new selection is made

[Michael P. Flaga]

prehaps, something like the following, where it is up to you get define getselection();

setup{
  if(!sd.begin(SD_SEL, SPI_HALF_SPEED)) sd.initErrorHalt();
  if(!sd.chdir("/")) sd.errorHalt("sd.chdir");
  MP3player.begin();
  prv_selection = selection;
}

loop{
  selection = getselection();
  if (()selection == 0) and (prv_selection != 0)) {
    MP3player.stopTrack();
    prv_selection = selection;
  }
  else if (selection != prv_selection) {
    MP3player.playTrack(selection);
    prv_selection = selection;
  }
  // do other stuff and then loop back around.
}

[Anonymous]

Unfortunately it didn’t work – I don’t know if someone else has tested it and it works? But I’m sure that it keeps reseting here prv_selection=selection in the loop function.
Is there a function that reports when the track has finished playing so that I reset the track number? And then do something like this:

if (buttonIn == 1){
MP3player.stopTrack();
MP3player.playTrack(1);
}

if (buttonIn == 2){
MP3player.stopTrack();
MP3player.playTrack(2);
}

[Michael P. Flaga]

Look at my GIST example MP3ButtonPlayer.ino
I just threw it together, it does compile and should (???) work. I have not tested it at this moment. Where as it is very simple. And uses the Bounce Library to make Debouncing easy.

[Author]

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