CONFIG_ARM=y CONFIG_SOC_FAMILY_NRF5=y CONFIG_SOC_SERIES_NRF52X=y CONFIG_SOC_NRF52840=y CONFIG_BOARD_NRF52840_PCA10056=y # enable uart driver CONFIG_SERIAL=y CONFIG_UART_NRF5=y # enable console CONFIG_CONSOLE=y CONFIG_UART_CONSOLE=y # additional board options CONFIG_GPIO_AS_PINRESET=y # bluetooth CONFIG_BLUETOOTH=y CONFIG_BLUETOOTH_CONTROLLER=y