Regarding the flash of hci_uart sample app of zephire in nrf52840
See this page:
You still need to run the btattach command.
E.g. : btattach -B /dev/ttyXXX -S 1000000 -P h4
See for more info on btattach:
Amit Purwar <amit.purwar@...>
I have build and flashed the zephire/sample/bluetooth/hci_uart on nrf52840 board and connected the board with ubuntu but hci interface was not created when checked using hciconfig.
Can you please provide the steps for the same . I have used below step
cmake -DBOARD=nrf52840_pca10056 ../
But no hci interface created