MCU_SERIES = m4 MCU_VARIANT = nrf52 MCU_SUB_VARIANT = nrf52840 SD ?= s140 SOFTDEV_VERSION ?= 6.0.0 BOOT_SETTING_ADDR = 0xFF000 LD_FILE = boards/bluefruit_$(MCU_SUB_VARIANT)_$(SD_LOWER)_$(SOFTDEV_VERSION).ld BOOT_FILE = boards/$(BOARD)/bootloader/$(SOFTDEV_VERSION)/$(BOARD)_bootloader_$(SOFTDEV_VERSION)_s140 NRF_DEFINES += -DNRF52840_XXAA NRF_DEFINES += -DADAFRUIT_FEATHER52840