MCU_SERIES = m4 MCU_VARIANT = nrf52 MCU_SUB_VARIANT = nrf52840 SOFTDEV_VERSION ?= 6.0.0 ifeq ($(SD),) LD_FILE = boards/nrf52840_1M_256k.ld else LD_FILE = boards/nrf52840_1M_256k_s140_$(SOFTDEV_VERSION).ld endif NRF_DEFINES += -DNRF52840_XXAA