X-CUBE-AUDIO: USB audio high speed not work with iOS

[Tony2Simmy]

I use stm32h7r3 to develop USB audio recording function. My device can work successful in Ubuntu/Android/Windows, but failed in iOS. I had tried many iOS version, but still can't work.  The below is my device USB parameters:

2 channels L/R

32 bit  data length

48KHz sample rate

High speed

UAC1.0

my reference code(stm32F769I) from https://www.st.com/en/embedded-software/x-cube-audio.html

Could someone give me some advice?

 

[FBL]

Hi @Tony2Simmy 

X-CUBE-AUDIO-KIT supports STM32H7RS products. 

[Tony2Simmy]

I find out UAC2.0 and tinyusb library in X-CUBE-AUDIO-KIT.

Do ST have plan to update UAC1.0 to UAC2.0 in X-CUBE-AUDIO?

[audio]

Were you able to get anywhere?

HS is not supported in UAC1.0, so you're on the right track to use UAC2.0.

[AScha.3]

Hi,

Did you try with a standard setting?

Like: 48k, 16bit, stereo/2ch ?

[Tony2Simmy]

When I change high speed to full speed, iOS can detect my USB device.

It seems that iOS can't support HS in UAC1.0.