# export the CPU family so we can differentiate between them in the code FAM = $(shell echo $(CPU_FAM) | tr 'a-z-' 'A-Z_') export CFLAGS += -DCPU_FAM_$(FAM) # use common periph functions USEMODULE += periph_common # include nrf5x common periph drivers USEMODULE += nrf5x_common_periph # export the common include directory export INCLUDES += -I$(RIOTCPU)/nrf5x_common/include