LPC MicrocontrollersのトピックRe: USB Composite Audio + HID DEMO LPC55S28

USB Composite Audio + HID DEMO LPC55S28

Claudio_ML — Thu, 21 Apr 2022 10:48:47 GMT

I'm testing example project COMPOSITE HID AUDIO Unified bare metal from SDK 2.11 on a LPCXpresso55s28.

Audio Speaker profile is working fine but Line IN/Microphone profile is not sending data from board to PC

I also noted that Microphone volume under Windows properties is fixed to 0 (zero)

Any idea on what I'm getting wrong?

Thank you

Re: USB Composite Audio + HID DEMO LPC55S28

Alice_Yang — Sun, 24 Apr 2022 06:35:29 GMT

Hello Claudio_ML,

Have you refer to the steps of readme.pdf, pay particular attention to the note at the end of the document.

I attach it for you.

Alice

Re: USB Composite Audio + HID DEMO LPC55S28

Claudio_ML — Wed, 27 Apr 2022 08:12:03 GMT

Thank You Alice, I already did the check you mentioned.

Anyway I found the problem, #define USB_DEVICE_CONFIG_AUDIO_CLASS_2_0 is not seen on all project files and this makes some part not working accordly with AUDIO Class 2.0, making it visible by all fix the issue.

Claudio