CONFIG_ARM=y
CONFIG_SOC_FAMILY_NRF=y
CONFIG_SOC_SERIES_NRF51X=y
CONFIG_SOC_NRF51822_QFAA=y
CONFIG_BOARD_BBC_MICROBIT=y

# clock control
CONFIG_CLOCK_CONTROL_NRF5_K32SRC_RC=y
CONFIG_CLOCK_CONTROL_NRF5_K32SRC_250PPM=y

# enable uart driver
CONFIG_SERIAL=y
CONFIG_UART_NRF5=y

# enable console
CONFIG_CONSOLE=y
CONFIG_UART_CONSOLE=y

# bluetooth
CONFIG_BT=y
CONFIG_BT_CTLR=y