# 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) # include common periph module USEMODULE += periph_common # include stm32 common functions and stm32 common periph drivers USEMODULE += stm32_common stm32_common_periph # export the common include directory export INCLUDES += -I$(RIOTCPU)/stm32_common/include