CONFIG_ARM=y
CONFIG_SOC_FAMILY_NRF=y
CONFIG_SOC_SERIES_NRF51X=y
CONFIG_SOC_NRF51822_QFAA=y
CONFIG_BOARD_CURIE_BLE=y

# enable GPIO
CONFIG_GPIO=y

# enable uart driver
CONFIG_SERIAL=y
CONFIG_UART_0_NRF_UART=y