UDC and USBD_CH9 error appears with HID keyboard example

[keithauhk]

Hello,

I am working with NRF52840 dongle.

I built and downloaded the hid-keyboard example to the dongle. HID keyboard function looks good that a "1" is typed by pressing the key on the dongle.

While looking at the debug messages printed through USB CDC, I can see some err messages:
[00:01:04.954,925] <err> udc: Failed to allocate net_buf 4095, ep 0x80
[00:01:04.954,986] <err> usbd_ch9: Buffer for data|status is missing
[00:01:04.954,986] <err> usbd_ch9: Malformed setup packet

These messages appears especially when another USB device is just plugged to the same USB Hub that the dongle is connecting.

USB HID function seems works well. However, may I confirm if the above err messages could be ignored?

Thank you!

Regards,

Keith Au

[keithauhk]

As a note, I am using NCS v3.2.1 for the above situation.