# define the cpu used by the phyWAVE-KW22 board
export CPU = kw2x
export CPU_MODEL = kw21d256
#export CPU_MODEL = kw21d512
#export CPU_MODEL = kw22d512

#define the default port depending on the host OS
OS := $(shell uname)
ifeq ($(OS),Linux)
  PORT ?= /dev/ttyACM0
else ifeq ($(OS),Darwin)
  PORT ?= $(shell ls -1 /dev/tty.SLAB_USBtoUART* | head -n 1)
else
  $(info CAUTION: No flash tool for your host system found!)
endif
export PORT

# define tools used for building the project
export PREFIX = arm-none-eabi-
export CC = $(PREFIX)gcc
export AR = $(PREFIX)ar
export AS = $(PREFIX)as
export LINK = $(PREFIX)gcc
export SIZE = $(PREFIX)size
export OBJCOPY = $(PREFIX)objcopy
export OPENOCD ?= openocd
export DBG ?= $(PREFIX)gdb
export TERMPROG = $(RIOTBASE)/dist/tools/pyterm/pyterm
export FLASHER = $(RIOTBASE)/dist/tools/openocd/openocd.sh
export DEBUGGER = $(RIOTBASE)/dist/tools/openocd/openocd.sh
export DEBUGSERVER = $(RIOTBASE)/dist/tools/openocd/openocd.sh
export RESET = $(RIOTBASE)/dist/tools/openocd/openocd.sh

.PHONY: flash
flash: $(RIOTCPU)/kinetis_common/dist/wdog-disable.bin

# Reset the default goal.
.DEFAULT_GOAL :=


# define build specific options
export CPU_USAGE = -mcpu=cortex-m4
export FPU_USAGE =
export CFLAGS += -ggdb -g3 -std=gnu99 -Os -Wall -Wstrict-prototypes $(CPU_USAGE) $(FPU_USAGE) -mlittle-endian -mthumb -mthumb-interwork -nostartfiles
export CFLAGS += -ffunction-sections -fdata-sections -fno-builtin

export ASFLAGS += -ggdb -g3 $(CPU_USAGE) $(FPU_USAGE) -mlittle-endian
export LINKFLAGS += -g3 -ggdb -std=gnu99 $(CPU_USAGE) $(FPU_USAGE) -mlittle-endian -static -lgcc -mthumb -mthumb-interwork -nostartfiles
export LINKFLAGS += -T$(LINKERSCRIPT)

export FFLAGS = flash-elf
export DEBUGGER_FLAGS = debug
export DEBUGSERVER_FLAGS = debug-server
export RESET_FLAGS = reset
export TERMFLAGS = -p $(PORT)
export TUI = 1
# We need special handling of the watchdog if we want to speed up the flash
# verification by using the MCU to compute the image checksum after flashing.
# wdog-disable.bin is a precompiled binary which will disable the watchdog and
# return control to the debugger (OpenOCD)
export OPENOCD_PRE_VERIFY_CMDS += \
  -c 'load_image $(RIOTCPU)/kinetis_common/dist/wdog-disable.bin 0x20000000 bin' \
  -c 'resume 0x20000000'
export OPENOCD_EXTRA_INIT
export PRE_FLASH_CHECK_SCRIPT = $(RIOTCPU)/kinetis_common/dist/check-fcfield-elf.sh

# use newLib nano-specs if available
ifeq ($(shell $(LINK) -specs=nano.specs -E - 2>/dev/null >/dev/null </dev/null ; echo $$?),0)
export LINKFLAGS += -specs=nano.specs -lc -lnosys
endif

# export board specific includes to the global includes-listing
export INCLUDES += -I$(RIOTBOARD)/$(BOARD)/include
include $(RIOTBOARD)/$(BOARD)/Makefile.dep