hci_usb sample Data Length Extension related commands not supported

[abferm]

I am trying to use the nRF52840-DK as a USB HCI device, but am getting Unknown HCI command responses to "LE Read Maximum Data Length", "LE Read Suggested Default Data Length", and "LE Write Suggested Default Data Length".

I found this but am not sure if enabling this option will solve my issue, or how to go about enabling it.

[carlescufi]

Yes, you do need to enable that option. Add CONFIG_BT_CTLR_DATA_LENGTH=y in your prj.conf