ifneq (,$(filter saul_default,$(USEMODULE)))
  USEMODULE += saul_adc
  USEMODULE += saul_gpio
endif

# default to mtd_mci
ifneq (,$(filter mtd,$(USEMODULE)))
  USEMODULE += mtd_mci
endif

# default to using FAT on the SD card
ifneq (,$(filter vfs_default,$(USEMODULE)))
  USEMODULE += fatfs_vfs
  USEMODULE += mtd
endif