"undefined reference to `__device_dts_ord_111' " when CONFIG_SERIAL=n

[ZacMid007]

I'm attempting to develop for the xiao_ble board in nRF Connect, using the Mesh Light Switch as a starting point. However, I am unable to build the application with the lpn overlay due to the line `CONFIG_SERIAL=n`. This produces the following:

While I would guess it's something to do with the board, as it builds fine for the nRF52840dk, this error is frustratingly vague and leaves me unsure what I could change to get around it.

[Marte Myrvold]

Hi,

The error is due to CONFIG_USB_DEVICE_STACK being enabled in the xiao_ble board files, https://github.com/nrfconnect/sdk-zephyr/blob/v3.2.99-ncs2/boards/arm/xiao_ble/xiao_ble_defconfig#L23.

Disabling this in your project's config solves the issue:

CONFIG_USB_DEVICE_STACK=n

Best regards,
Marte