# define the cpu used by the ek-lm4f120xl board
  export CPU = lm4f120
  export CPU_MODEL = LM4F120H5QR
  
  #define the default port depending on the host OS
  PORT_LINUX ?= /dev/ttyACM0
  PORT_DARWIN ?= $(firstword $(sort $(wildcard /dev/tty.usbmodem*)))
  
  # setup serial terminal
  include $(RIOTBOARD)/Makefile.include.serial
  
  # this board uses openocd
  include $(RIOTBOARD)/Makefile.include.openocd