# SPDX-License-Identifier: Apache-2.0 CONFIG_SOC_SERIES_NRF51X=y CONFIG_SOC_NRF51822_QFAC=y # enable GPIO CONFIG_GPIO=y # enable uart driver CONFIG_SERIAL=y # enable console CONFIG_CONSOLE=y CONFIG_UART_CONSOLE=y # spi CONFIG_SPI=y CONFIG_SPI_SLAVE=y