Nordic nrf52810_pca10040 is missing default bluetooth configuration options

[thedjnK]

When building sample applications with Bluetooth using the nrf52810_pca10040 board configuration, an error is emitted:

C:/zephyr/drivers/bluetooth/hci/h4.c: In function '_bt_uart_init':
C:/zephyr/drivers/bluetooth/hci/h4.c:462:30: error: 'CONFIG_BT_UART_ON_DEV_NAME' undeclared (first use in this function);
did you mean 'CONFIG_UART_0_NAME'?
  h4_dev = device_get_binding(CONFIG_BT_UART_ON_DEV_NAME);
                              ^~~~~~~~~~~~~~~~~~~~~~~~~~
                              CONFIG_UART_0_NAME
C:/zephyr/drivers/bluetooth/hci/h4.c:462:30: note: each undeclared identifier is reported only once for each function it appears in
[34/128] Building C object zephyr/CMak....dir/drivers/timer/nrf_rtc_timer.c.obj
ninja: build stopped: subcommand failed.

Selecting the option Bluetooth -> Bluetooth Controller fixes this issue but it should be added to the default configuration as it is with the nrf52840_pca10056 board.

[ioannisg]

Selecting the option Bluetooth -> Bluetooth Controller fixes this issue but it should be added to the default configuration as it is with the nrf52840_pca10056 board.

AFAICS, it is documented why the BT options are not enabled by default n 52810.

# Bluetooth not enabled by default on nRF52810 due to RAM limitations when
# running the default set of kernel tests.
# Enable this on your prj.conf to include Bluetooth support

[SebastianBoe]

I get that we don't enable BT on 52810. But IMHO when BT is enabled by the app we should default to using BT_CTLR and not BT_UART as the BT samples are doing.

PR: #9499

[SebastianBoe]

@thedjnK : Thank you for reporting.