Speaker Volume Low - Migrating LyraT from Old Library

[ofthedove]

I have a LyraT board that's been running a sketch based on the old audiokit library. I've just developed a new sketch using this library, and it works except that the sound out of the speakers is very quiet, much quieter than before.

I found addHeadphoneDetectionAction and added that, and that function seems to be working. The volume is just fine out of the headphone jack, but the volume out of the JST speakers is very low.

I'm 100% confident that the hardware isn't broken, because I built the old sketch and flashed it and the volume out of the speakers is just what I expected.

Here's the really weird thing: While testing the headphone jack, I found that if the headphones are halfway plugged in, just far enough out that they're not detected, the speakers sound fine.

There must be some setting or something that needs to be set, but I can't find it.

The only other thing that might be unusual vs what I've seen in examples and blog posts is that I am using SD_MMC with all dip switches set to OFF, because I was using SD MMC on the old version and it seems like the intention of the hardware design to use MMC over SPI SD. I don't think that should impact the speaker volume though.

This is the current sketch: https://github.com/ofthedove/RainSpeaker/tree/main/RainSpeaker_Hass/RainSpeaker3

For reference, this is the old sketch: https://github.com/ofthedove/RainSpeaker/tree/main/RainSpeaker
(The old one is a bit weird because I included libraries as submodules. I also had to comment out the BT stuff to get it to build when I tried just now.)

[pschatzmann]

I am not aware of any issues: I suggest that you try to test with this sketch to reproduce your issue.

Call player.setVolume(1.0f); and kit.setVolume(1.0f); to use the max possible volume.

[ofthedove]

Thank you for your quick response! Unfortunately, I tried that sketch and had the same issue. I finally was able to track the issue to AI_THINKER_ES8388_VOLUME_HACK, and after disabling that my problem is resolved!

More details:
In arduino-audiokit the hack defaulted off, but in arduino-audio-driver it defaults on. When it's on, it makes different register writes to change volume. These settings are apparently needed on some ES8388 audiokit boards, but they cause the problems described above for the LyraT v4.3.

It would be nice if selecting LyratV43 as the board could automatically disable this, rather than it having to be a compile time constant, but for me adding AI_THINKER_ES8388_VOLUME_HACK=3 to my project config has me up and running!

For anyone finding this later, feel free to reference my project, this tag is confirmed working for me using FileLoop with a WAV file using SD_MMC on the LyraT 4.3 with external speakers: https://github.com/ofthedove/RainSpeaker/tree/1.0.0/RainSpeaker_Hass/RainSpeaker3

[pschatzmann]

I pushed a commit which uses volume hack 3 for LyraT