comb port {
    char "Class" "Port class"
    int "Port" "Port number"
} "$1$2" "Specifies port. Combination of class and port. Now set: $1$2"

enum nrf_spi {
    spi, usi, usart
}

menu "nrf24l01p" "Driver for nRF24L01+"

NRF_SPII: (spi SPI_MASTER) || (usi SPI_USI_MASTER)
    type nrf_spi
    default spi
    menu "SPI interface" "Specify SPI interface"

NRF_CSN_PORT:
    type port
    nodefault
    menu "SPI CSN Port" "SPI Chip select port"

NRF_CE_PORT:
    type port
    nodefault
    menu "CE port" "Chip enable port"

endmenu