RIOT/boards/common/atmega/Makefile.include

INCLUDES += -I$(RIOTBOARD)/common/atmega/include

# Use avrdude programmer
PROGRAMMER ?= avrdude

# Add avrdude as supported programmer
PROGRAMMERS_SUPPORTED += avrdude

# Use atmega board specific bootloader by default
ATMEGA_BOOTLOADER ?= $($(call uppercase_and_underscore,$(BOARD))_BOOTLOADER)

# If avrdude specific programmer is not set, set it based on the bootloader used
ifeq (,$(AVRDUDE_PROGRAMMER))
  ifeq (atmegaboot,$(ATMEGA_BOOTLOADER))
    AVRDUDE_PROGRAMMER = arduino
    ATMEGA_BOOTLOADER_SIZE ?= 2048
    ATMEGA_BOOTLOADER_BAUD ?= 57600
  endif

  ifeq (optiboot,$(ATMEGA_BOOTLOADER))
    AVRDUDE_PROGRAMMER = arduino
    ifneq (,$(filter $(CPU), atmega128rfa1 atmega256rfr2 atmega1281 atmega1284p atmega2560))
      # The minimum bootloader size on these CPUs is 1 KiB (so 512 Byte are wasted)
      ATMEGA_BOOTLOADER_SIZE ?= 1024
    else
      ATMEGA_BOOTLOADER_SIZE ?= 512
    endif
  endif

  ifeq (stk500v1,$(ATMEGA_BOOTLOADER))
    AVRDUDE_PROGRAMMER = stk500v1
    ATMEGA_BOOTLOADER_SIZE ?= 8K
  endif

  ifeq (stk500v2,$(ATMEGA_BOOTLOADER))
    AVRDUDE_PROGRAMMER = stk500v2
    ATMEGA_BOOTLOADER_SIZE ?= 8K
    # Disable auto erase; erasing the flash is done implicitly by the bootloader
    # and explicit erase is not supported
    FFLAGS_EXTRA += -D
  endif

  ifeq (avr109,$(ATMEGA_BOOTLOADER))
    AVRDUDE_PROGRAMMER = avr109
    ATMEGA_BOOTLOADER_SIZE ?= 4K
  endif

  ifeq (derfmega,$(ATMEGA_BOOTLOADER))
    AVRDUDE_PROGRAMMER = wiring
    ATMEGA_BOOTLOADER_SIZE ?= 4K
  endif

  ifneq (,$(ATMEGA_BOOTLOADER_BAUD))
    FFLAGS_EXTRA += -b $(ATMEGA_BOOTLOADER_BAUD)
  endif
endif

ATMEGA_BOOTLOADER_SIZE ?= 0
ROM_RESERVED ?= $(ATMEGA_BOOTLOADER_SIZE)