SPIFFS to i2s Example

[craiglindley]

I noticed there wasn't an example using SPIFFS to i2s on the esp32. I thought I could modify the SD MP3 to i2s example easily enough but I couldn't get it to work. With my changes the code compiles and run but it stops immediately.

Any suggestions?

[craiglindley]

I think I know why. In the copy function of AudioCopy.h there is this line

        size_t len = available();

which returns 0 and therefore causes the code to return immediately. Shouldn't there be a stream on which available is called? Otherwise what is available referencing?

[pschatzmann]

I think the SPIFFS is a pain to use and not portable to other processors, therefore I did not provide any example.
The copy source needs to be a stream which has available data and if it is failing in your case you have an issue with the file content!

You can easily double check this by adding some asserts into the setup of your sketch:

  // setup file
  SPIFFS.begin();
  File audioFile = SPIFFS.open("/audio.mp3","r");
  assert(audioFile.available()>0);

[craiglindley]

Here is the code I use to open my file:

// setup file
if (! SPIFFS.begin(false)) {
Serial.printf("Error starting SPIFFS\n");
while (true) {}
}
File audioFile = SPIFFS.open("/HotelCAC.mp3", "r");
if (! audioFile) {
Serial.printf("Error opening file\n");
while (true) {}
}
Serial.printf("File size: %d\n", audioFile.available());

Here is the results printed on the Serial interface

File size: 1621033

but internal to the copy function of AudioCopy.h

the available() method returns 0

There is a disconnect somewhere

[pschatzmann]

can you show the full sketch ?
Maybe the issue is that audioFile is a local variable. Try to make it static or move the definition out of the method...

[craiglindley]

Yes you got it. When I make the audioFile variable global in the sketch the file sizes match but now I get a corrupt heap error: File size: 805091 len: 805091 CORRUPT HEAP: multi_heap.c:432 detected at 0x3ffb6090 abort() was called at PC 0x400891f3 on core 1 Since I used your sketch for SD to i2s as an example, I have to believe it would have the same issues as my sketch has. That is, the available() in the copy routine would return 0. I have no idea what is causing the corrupt heap issue. You can see the file size above and I have chosen 2mb app/2mb SPIFFS for the partition scheme. Sorry to keep bothering you about this but I would really like to be able to code the app I have in mind.

…

On Mon, Nov 1, 2021 at 3:30 PM Phil Schatzmann ***@***.***> wrote: can you show the full sketch ? Maybe the issue is that audioFile is a local variable. Try to make it static or move the definition out of the method... — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#31 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AH6K5D6J6SNOLAVFXDNRDKDUJ4BGPANCNFSM5HDBW3WQ> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.

-- Craig Lindley / Heather Hubbard New Recordings are here <http://craigandheather.net/spellbound.html> Personal Website is here <http://craigandheather.net> Please call the Rockrimmon house. Our cell phones don't work at home. Rockrimmon House: (719) 426-9873 Craig's Cell: (719) 502-7925 Heather's Cell: (719) 571-0944 If you’re one in a million, there are now more than seven thousand people exactly like you.

[pschatzmann]

For some strange reason my sketch is working w/o issues - but I will correct it tomorrow.
For the currupt heap I suggest that you update the libhelix library. I was getting the same issue on some mp3 files and increased the default output size...

[craiglindley]

Updating the library did it, thanks for the tip. My only problem left is the audio still has some clicking in it which I will investigate next.

…

On Mon, Nov 1, 2021 at 4:21 PM Phil Schatzmann ***@***.***> wrote: For some strange reason my sketch is working w/o issues - but I will correct it tomorrow. For the currupt heap I suggest that you update the libhelix library. I was getting the same issue on some mp3 files and increased the default output size... — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#31 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AH6K5D6VMJZ5S3KTYOHINITUJ4HE7ANCNFSM5HDBW3WQ> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.

-- Craig Lindley / Heather Hubbard New Recordings are here <http://craigandheather.net/spellbound.html> Personal Website is here <http://craigandheather.net> Please call the Rockrimmon house. Our cell phones don't work at home. Rockrimmon House: (719) 426-9873 Craig's Cell: (719) 502-7925 Heather's Cell: (719) 571-0944 If you’re one in a million, there are now more than seven thousand people exactly like you.

[JonS9999]

Hi Craig. Were you ever able to resolve your clicking issue? I'd also be curious to see your whole sketch (SPIFFS -> I2S).

Cheers.

[craiglindley]

No I was not able to resolve the issue so I gave up and went another way.

…

On Fri, Apr 8, 2022 at 1:24 PM JonS9999 ***@***.***> wrote: Hi Craig. Were you ever able to resolve your clicking issue? I'd also be curious to see your whole sketch (SPIFFS -> I2S). Cheers. — Reply to this email directly, view it on GitHub <#31 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AH6K5DY4CFZ76QRFS23ER2DVECBV5ANCNFSM5HDBW3WQ> . You are receiving this because you authored the thread.Message ID: <pschatzmann/arduino-audio-tools/repo-discussions/31/comments/2533162@ github.com>

-- Craig Lindley / Heather Hubbard New Recordings are here <http://craigandheather.net/spellbound.html> Personal Website is here <http://craigandheather.net> Please call the Rockrimmon house. Our cell phones don't work at home. Rockrimmon House: (719) 426-9873 Craig's Cell: (719) 502-7925 Heather's Cell: (719) 571-0944 If you’re one in a million, there are now more than seven thousand people exactly like you.

[pschatzmann]

I would expect that if you remove the meta data, the issue should go away

[craiglindley]

It didn't for me. Things got better but I can never make the clicking go away completely

…

On Fri, Apr 8, 2022 at 1:30 PM Phil Schatzmann ***@***.***> wrote: I would expect that if you remove the meta data, the issue should go away — Reply to this email directly, view it on GitHub <#31 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AH6K5D4MXT5ZTYJIUQ3QQ63VECCONANCNFSM5HDBW3WQ> . You are receiving this because you authored the thread.Message ID: <pschatzmann/arduino-audio-tools/repo-discussions/31/comments/2533188@ github.com>

-- Craig Lindley / Heather Hubbard New Recordings are here <http://craigandheather.net/spellbound.html> Personal Website is here <http://craigandheather.net> Please call the Rockrimmon house. Our cell phones don't work at home. Rockrimmon House: (719) 426-9873 Craig's Cell: (719) 502-7925 Heather's Cell: (719) 571-0944 If you’re one in a million, there are now more than seven thousand people exactly like you.