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USB Audio - Error code 43

AA.10
Associate III

Hi,

I have implemented USB audio (on my project) which is based on the memsmic1 example project.

The MCU i am using is STM32L496x, under keil IDE.

the device is recogined by window as audio device but, when i disconnect and reconnect again, I am having an Error Code 43,because a request for the USB device descriptor was failed.

did someone had this problem before? is there a way to solve it beside shutdown the device

?

Thanks, Avi

2 REPLIES 2
Imen.D
ST Employee

Hello,

Check the state of the DP and DM signal lines.

May be you have swapped USB D+/D- lines.

When your question is answered, please close this topic by clicking "Accept as Solution".
Thanks
Imen

Hello,

but it's not happening in HID or MSD profile.

Avi