CONFIG_ARM=y
CONFIG_SOC_FAMILY_NRF=y
CONFIG_SOC_SERIES_NRF51X=y
CONFIG_SOC_NRF51822_QFAC=y

# enable uart driver
CONFIG_SERIAL=y
CONFIG_UART_0_NRF_UART=y

# enable console
CONFIG_CONSOLE=y
CONFIG_UART_CONSOLE=y

# spi
CONFIG_SPI=y
CONFIG_SPI_SLAVE=y
CONFIG_SPI_1=y
CONFIG_SPI_1_NRF_SPIS=y