FLASHER ?= avrdude
DIST_PATH = $(BOARDDIR)/dist
AVARICE_PATH = $(RIOTTOOLS)/avarice
DEBUGSERVER_PORT = 4242
DEBUGSERVER ?= $(AVARICE_PATH)/debug_srv.sh
# Allow choosing debugger hardware via AVR_DEBUGDEVICE. If the
# AVRDUDE_PROGRAMMER however is also capable of debugging, use that by default
ifneq (,$(filter $(AVRDUDE_PROGRAMMER),atmelice xplainedpro xplainedpro_pdi))
  AVR_DEBUGDEVICE ?= --edbg
endif
ifneq (,$(filter dragon%,$(AVRDUDE_PROGRAMMER)))
  AVR_DEBUGDEVICE ?= --dragon
endif
# Atmel ICE / EDBG is the most sensible fallback
AVR_DEBUGDEVICE ?= --edbg
AVR_DEBUGINTERFACE ?= usb
ifneq (,$(filter $(CPU),atmega328p))
  # Use debugWIRE as protocol for debugging (ATmega328P does not support JTAG)
  DEBUGPROTO := -w
else
  # Use JTAG as protocol for debugging as default
  DEBUGPROTO ?= -j $(AVR_DEBUGINTERFACE)
endif
DEBUGSERVER_FLAGS ?= "$(AVR_DEBUGDEVICE) $(DEBUGPROTO) :$(DEBUGSERVER_PORT)"
DEBUGGER_FLAGS ?= "-x $(AVARICE_PATH)/gdb.conf $(DEBUG_ELFFILE)"
DEBUGGER = "$(AVARICE_PATH)/debug.sh" $(DEBUGSERVER_FLAGS) $(AVARICE_PATH) $(DEBUGSERVER_PORT)

ifeq (atxmega,$(CPU))
  AVRDUDE_PROGRAMMER_FLAGS ?= -p $(subst atxmega,x,$(CPU_MODEL))
else
  AVRDUDE_PROGRAMMER_FLAGS = -p $(subst atmega,m,$(CPU))
endif

# Set flasher port only for programmers that require it
ifneq (,$(filter $(AVRDUDE_PROGRAMMER),arduino avr109 buspirate stk500v1 stk500v2 wiring))
  # make the flasher port configurable (e.g. with atmelice the port is usb)
  # defaults to terminal's serial port if not configured
  AVRDUDE_PROGRAMMER_FLAGS += -P $(PROG_DEV)
endif
AVRDUDE_PROGRAMMER_FLAGS += $(FFLAGS_EXTRA)

# don't force to flash HEXFILE, but set it as default
FLASHFILE ?= $(HEXFILE)
FFLAGS += -c $(AVRDUDE_PROGRAMMER) $(AVRDUDE_PROGRAMMER_FLAGS) -U flash:w:$(FLASHFILE)

ifeq (,$(filter $(AVRDUDE_PROGRAMMER),arduino avr109 stk500v1 stk500v2 wiring))
  # Use avrdude to trigger a reset, if programming is not done via UART and a
  # bootloader.
  RESET ?= $(FLASHER) -c $(AVRDUDE_PROGRAMMER) $(AVRDUDE_PROGRAMMER_FLAGS)
endif