ifneq (,$(filter gnrc_netif_default,$(USEMODULE))) USEMODULE += at86rf212b USEMODULE += gnrc_nomac endif # The RTT clock drives the core clock in the default configuration FEATURES_REQUIRED += periph_rtt # The Mulle uses NVRAM to store persistent variables, such as boot count. #~ USEMODULE += nvram_spi # Uncomment above when #2353 is merged.