CONFIG_ARM=y CONFIG_SOC_FAMILY_NRF=y CONFIG_SOC_SERIES_NRF52X=y CONFIG_SOC_NRF52840_QIAA=y CONFIG_BOARD_NRF52840_PCA10056=y # Enable MPU CONFIG_ARM_MPU_NRF52X=y # enable uart driver CONFIG_SERIAL=y CONFIG_UART_NRFX=y CONFIG_UART_0_NRF_UART=y # enable console CONFIG_CONSOLE=y CONFIG_UART_CONSOLE=y # additional board options CONFIG_GPIO_AS_PINRESET=y # bluetooth CONFIG_BT=y CONFIG_BT_CTLR=y