MCU_VARIANT = nrf52840 CFLAGS += -DNRF52840_XXAA $(BUILD)/$(PROJECT).zip: $(BUILD)/$(PROJECT).hex adafruit-nrfutil dfu genpkg --dev-type 0x0052 --sd-req 0xFFFE --application $^ $@ # flash using adafruit-nrfutil dfu flash: $(BUILD)/$(PROJECT).zip @:$(call check_defined, SERIAL, example: SERIAL=/dev/ttyACM0) adafruit-nrfutil --verbose dfu serial --package $^ -p $(SERIAL) -b 115200 --singlebank --touch 1200