# MULLE_SERIAL is used to select which specific Mulle board we are compiling for.
ifdef MULLE_SERIAL
  CFLAGS += -DMULLE_SERIAL=$(MULLE_SERIAL)
endif

# Default debug adapter choice is to use the Mulle programmer board
DEBUG_ADAPTER ?= mulle
# Host OS name
OS := $(shell uname)

# Fall back to PROGRAMMER_SERIAL for backwards compatibility
DEBUG_ADAPTER_ID ?= $(PROGRAMMER_SERIAL)

ifeq ($(PORT),)
  # try to find tty name by serial number, only works on Linux currently.
  ifeq ($(OS),Linux)
    ifneq ($(DEBUG_ADAPTER_ID),)
      PORT := $(firstword $(shell $(RIOTTOOLS)/usb-serial/find-tty.sh '^$(DEBUG_ADAPTER_ID)$$'))
    else
      # find-tty.sh will return the first USB tty if no serial is given.
      PORT := $(firstword $(shell $(RIOTTOOLS)/usb-serial/find-tty.sh))
  endif
  else ifeq ($(OS),Darwin)
    ifneq ($(DEBUG_ADAPTER_ID),)
      PORT := /dev/tty.usbserial-$(DEBUG_ADAPTER_ID)B
    else
      PORT := $(firstword $(sort $(wildcard /dev/tty.usbserial*)))
    endif
  endif
endif
ifeq ($(PORT),)
  # fall back to a sensible default
  PORT := /dev/ttyUSB0
endif

# 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 $(RIOTCPU)/$(CPU)/dist/wdog-disable.bin 0x20000000 bin' \
  -c 'resume 0x20000000'
export PRE_FLASH_CHECK_SCRIPT = $(RIOTCPU)/$(CPU)/dist/check-fcfield.sh

# this board uses openocd
include $(RIOTMAKE)/tools/openocd.inc.mk

# setup serial terminal
include $(RIOTMAKE)/tools/serial.inc.mk