# Define the CPU family so we can differentiate between them in the code
CFLAGS += -DCPU_FAM_$(shell echo $(CPU_FAM) | tr 'a-z-' 'A-Z_')

# Set ROM and RAM lengths according to CPU model
ifneq (,$(filter samd21g18a samd21j18a saml21j18b saml21j18a samr21g18a,$(CPU_MODEL)))
  ROM_LEN ?= 0x40000
  RAM_LEN ?= 0x8000
endif

ROM_START_ADDR ?= 0x00000000
RAM_START_ADDR ?= 0x20000000

# this CPU implementation doesn't use CMSIS initialization
export CFLAGS += -DDONT_USE_CMSIS_INIT

# For Cortex-M cpu we use the common cortexm.ld linker script
LINKER_SCRIPT ?= cortexm.ld

# use common periph functions
USEMODULE += periph_common

# include sam0 common periph drivers
USEMODULE += sam0_common_periph

# export the common include directory
export INCLUDES += -I$(RIOTCPU)/sam0_common/include