Of the correct usage of player.setPath ([W] AudioPlayer.h : 144 - -> begin: no data found)

[0x0fe]

So, i may have a wrong usage of player.setPath, or there is a bug. I am reading mp3 from SD card via AudioSourceSDMMC, when i play files inside directories at the root of the SD it works fine, i set the parth with
player.setPath("/K0012");
And it will automatically find the files in this directory and play them one after the other.
However, when i move all the directories inside a subdirectory MKI01, then i got no data found error

player.setPath("/MKI01/K0012"); 
player.begin();

[W] AudioPlayer.h : 144 - -> begin: no data found
I dont understand what the cause can be, here is a picture of the SD structure:

That is how i setup the player:

player.setVolume(0.9); 
player.setMetadataCallback(printMetaData);
player.setAutoNext(true);

[0x0fe]

there is no error to reach the directory, but it fails to find the datas, which it did not when the directory was at the root of SD. Each directory has 3 mp3 files inside, named d1f1.mp3, d1f2.mp3, d1f3.mp3 for K0010 for example.

[pschatzmann]

Strange: it should explore the path recursively, so all of the following should find the data
/
/MKI01
/MKI01/K0012

const char startFilePath="/";
const char ext="mp3";
AudioSourceSD source(startFilePath, ext);

The setPath is expecting a full path to the start file! However you just give a directory

You can set the log level to Info or Debug to see in more detail what the system is doing...

[0x0fe]

even more strange, it can see the file

[0x0fe]

tried with another file, same problem. However all these files are working fine when their directory is at SD root. So there is really some kind of bug it seems.

[pschatzmann]

Just read me answer above: you are not using setPath() correctly !

[0x0fe]

"The setPath is expecting a full path to the start file! However you just give a directory"
I see, i will have to find a way around this because the filename is randomly set, i cannot know it in advance.

[pschatzmann]

I was just double checking the code and I think your code should actually work.
What happens if you give the start path only in the constructor ?

[0x0fe]

begin : no data found,
even though it can clearly find the file.

If i remove MKI01 and move K0010 at the root of the SD card then it works fine, it can read all files inside each directory as long as i set the directory path : player.setPath("/K0012");

[pschatzmann]

Maybe this is a version issue. Double check in the Board Manager: What ESP32 version are you using ?
Are you using the latest version of the SDMMC library.
At some point of time the filename() reported the full path and that was changed to report the file name only...

You could try to use the SD library instead which is part of the ESP32 and does not require any separate installation.

[0x0fe]

i use 2.0.6

SD_MMC version 2.0.0
FS version 2.0.0
arduino-audio-tools-1505524d5925643ba7378542f101229d54551f3f version 0.9.3

[0x0fe]

i think you are right, it must be the SD_MMC version maybe, because :

[0x0fe]

but, i could not find SD_MMC in local libraries, so i assume its part of the ESP32 core, which is up to date.
edit: yes it is
\AppData\Local\Arduino15\packages\esp32\hardware\esp32\2.0.6\libraries\SD_MMC

[0x0fe]

i checked, actually the implmentation is in FS, not SD_MMC, and i can confirm file.name only returns the short name, to get the path it is file.path
"You could try to use the SD library instead which is part of the ESP32 and does not require any separate installation."
not sure about that, SD_MMC is part of ESP32 core, and my hardware implementation is 1bit SDIO, i cannot use SD via SPI.