/make/arduino-mk : revision 16

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#

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# You may also need to set SERIALDEV if it is not detected correctly.

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#

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# The presence of a .ino (or .pde) file causes the arduino.mk to automatically

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# The presence of a .ino or .pde file causes the arduino.mk to automatically

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# determine values for SOURCES, TARGET and LIBRARIES. Any .c, .cc and .cpp

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# files in the project directory (or any "util" or "utility" subdirectories)

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# are automatically included in the build and are scanned for Arduino libraries

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# that have been #included. Note, there can only be one .ino (or .pde) file.

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# that have been #included.

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#

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# Alternatively, if you want to manually specify build variables, create a

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# Makefile that defines SOURCES and LIBRARIES and then includes arduino.mk.

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# ARDUINODIR The path where you have installed/unpacked the arduino software

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# (from http://arduino.cc/)

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#

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# ARDUINOCONST The arduino software version, as an integer, used to define the

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# ARDUINO version constant. This defaults to 100 if undefined.

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#

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# AVRDUDECONF The avrdude.conf to use. If undefined, this defaults to a guess

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# based on where the avrdude in use is. If empty, no avrdude.conf

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# is passed to avrdude (to the system default is used).

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#

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# AVRTOOLSPATH A space-separated list of directories to search in order when

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# lookin for the avr build tools. This defaults to the system PATH

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# followed by subdirectories in ARDUINODIR if undefined.

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#

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# BOARD Specify a target board type. Run `make boards` to see available

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# board types.

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#

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# LIBRARIES A list of arduino libraries to build and include. This is set

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# automatically if a .ino (or .pde) is found.

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#

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# SERIALDEV The unix device name of the serial device that is the arduino.

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# If unspecified, an attempt is made to determine the name of a

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# connected arduino's serial device.

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#

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# TARGET The name of the target file. This is set automatically if a

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# .ino or .pde is found, but it is not necessary to set it

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# otherwise.

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#

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# SOURCES A list of all source files of whatever language. The language

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# type is determined by the file extension. This is set

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# automatically if a .ino (or .pde) is found.

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# automatically if a .ino or .pde is found.

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#

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# TARGET The name of the target file. This is set automatically if a

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# .ino (or .pde) is found, but it is not necessary to set it

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# otherwise.

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# LIBRARIES A list of arduino libraries to build and include. This is set

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# automatically if a .ino or .pde is found.

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#

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# This makefile also defines the following goals for use on the command line

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# when you run make:

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#_______________________________________________________________________________

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#

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# default arduino software directory, check software exists

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# The full path to the arduino software, from arduino.cc

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ifndef ARDUINODIR

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ARDUINODIR := $(wildcard ~/opt/arduino)

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endif

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ifeq "$(wildcard $(ARDUINODIR)/hardware/arduino/boards.txt)" ""

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# check arduino software

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ifeq ($(wildcard $(ARDUINODIR)/hardware/arduino/boards.txt), )

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$(error ARDUINODIR is not set correctly; arduino software not found)

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endif

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# default arduino version

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ARDUINOCONST ?= 100

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# default path for avr tools

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ifndef AVRTOOLSPATH

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AVRTOOLSPATH := $(subst :, , $(PATH))

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AVRTOOLSPATH += $(ARDUINODIR)/hardware/tools

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AVRTOOLSPATH += $(ARDUINODIR)/hardware/tools/avr/bin

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endif

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# auto mode?

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INOFILE := $(wildcard *.ino *.pde)

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ifdef INOFILE

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ifneq "$(words $(INOFILE))" "1"

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ifneq ($(words $(INOFILE)), 1)

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$(error There is more than one .pde or .ino file in this directory!)

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endif

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# automatically determine sources and targeet

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TARGET := $(basename $(INOFILE))

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SOURCES := $(INOFILE) \

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$(wildcard *.c *.cc *.cpp) \

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$(wildcard $(addprefix util/, *.c *.cc *.cpp)) \

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$(wildcard $(addprefix utility/, *.c *.cc *.cpp))

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# automatically determine included libraries

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ARDUINOLIBSAVAIL := $(notdir $(wildcard $(ARDUINODIR)/libraries/*))

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LIBRARIES := $(filter $(ARDUINOLIBSAVAIL), \

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$(shell sed -ne "s/^ *\# *include *[<\"]$.*$\.h[>\"]/\1/p" $(SOURCES)))

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endif

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# no serial device? make a poor attempt to detect an arduino

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SERIALDEVGUESS := 0

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ifeq "$(SERIALDEV)" ""

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SERIALDEV := $(firstword $(wildcard \

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/dev/ttyACM? /dev/ttyUSB? /dev/tty.usbmodem*))

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SERIALDEVGUESS := 1

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endif

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# software

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findsoftware = $(firstword $(wildcard $(addsuffix /$(1), $(AVRTOOLSPATH))))

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CC := $(call findsoftware,avr-gcc)

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CXX := $(call findsoftware,avr-g++)

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LD := $(call findsoftware,avr-ld)

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AR := $(call findsoftware,avr-ar)

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OBJCOPY := $(call findsoftware,avr-objcopy)

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AVRDUDE := $(call findsoftware,avrdude)

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endif

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# no target? use default

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ifeq ($(TARGET), )

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TARGET := a.out

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endif

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# no serial device? attempt to detect an arduino

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ifeq ($(SERIALDEV), )

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SERIALDEV := $(firstword $(wildcard /dev/ttyACM? /dev/ttyUSB?))

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endif

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# no board? oh dear...

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ifndef BOARD

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ifneq "$(MAKECMDGOALS)" "boards"

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ifneq "$(MAKECMDGOALS)" "clean"

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$(error BOARD is unset. Type 'make boards' to see possible values)

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endif

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endif

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endif

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# files

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TARGET := $(if $(TARGET),$(TARGET),a.out)

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OBJECTS := $(addsuffix .o, $(basename $(SOURCES)))

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ARDUINOSRCDIR := $(ARDUINODIR)/hardware/arduino/cores/arduino

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ARDUINOLIBSDIR := $(ARDUINODIR)/libraries

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$(patsubst %, $(ARDUINOLIBTMP)/%.o, $(basename $(notdir \

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$(wildcard $(addprefix $(ARDUINOLIBSDIR)/$(lib)/, *.c *.cpp)) \

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$(wildcard $(addprefix $(ARDUINOLIBSDIR)/$(lib)/utility/, *.c *.cpp)) ))))

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ifeq "$(AVRDUDECONF)" ""

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ifeq "$(AVRDUDE)" "$(ARDUINODIR)/hardware/tools/avr/bin/avrdude"

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AVRDUDECONF := $(ARDUINODIR)/hardware/tools/avr/etc/avrdude.conf

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else

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AVRDUDECONF := $(wildcard $(AVRDUDE).conf)

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endif

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endif

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# no board?

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ifndef BOARD

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ifneq "$(MAKECMDGOALS)" "boards"

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ifneq "$(MAKECMDGOALS)" "clean"

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$(error BOARD is unset. Type 'make boards' to see possible values)

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endif

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endif

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endif

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# obtain board parameters from the arduino boards.txt file

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BOARDS_FILE := $(ARDUINODIR)/hardware/arduino/boards.txt

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BOARD_UPLOAD_PROTOCOL := \

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$(shell sed -ne "s/$(BOARD).upload.protocol=$.*$/\1/p" $(BOARDS_FILE))

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# invalid board?

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ifeq "$(BOARD_BUILD_MCU)" ""

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ifneq "$(MAKECMDGOALS)" "boards"

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ifneq "$(MAKECMDGOALS)" "clean"

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$(error BOARD is invalid. Type 'make boards' to see possible values)

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endif

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endif

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endif

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# software (prioritise binaries that came with arduino software)

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FIND_SOFTWARE = $(firstword $(wildcard \

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$(ARDUINODIR)/hardware/tools/$(1) \

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$(ARDUINODIR)/hardware/tools/avr/bin/$(1) \

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) $(1) )

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CC := $(call FIND_SOFTWARE,avr-gcc)

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CXX := $(call FIND_SOFTWARE,avr-g++)

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LD := $(call FIND_SOFTWARE,avr-ld)

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AR := $(call FIND_SOFTWARE,avr-ar)

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OBJCOPY := $(call FIND_SOFTWARE,avr-objcopy)

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AVRDUDE := $(call FIND_SOFTWARE,avrdude)

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# flags

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CPPFLAGS := -Os -Wall -fno-exceptions -ffunction-sections -fdata-sections

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CPPFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums

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CPPFLAGS += -mmcu=$(BOARD_BUILD_MCU)

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CPPFLAGS += -DF_CPU=$(BOARD_BUILD_FCPU) -DARDUINO=$(ARDUINOCONST)

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CPPFLAGS = -Os -Wall -fno-exceptions -ffunction-sections -fdata-sections

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CPPFLAGS += -mmcu=$(BOARD_BUILD_MCU) -DF_CPU=$(BOARD_BUILD_FCPU)

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CPPFLAGS += -I. -Iutil -Iutility -I$(ARDUINOSRCDIR)

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CPPFLAGS += -I$(ARDUINODIR)/hardware/arduino/variants/$(BOARD_BUILD_VARIANT)/

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CPPFLAGS += $(addprefix -I$(ARDUINODIR)/libraries/, $(LIBRARIES))

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CPPFLAGS += $(patsubst %, -I$(ARDUINODIR)/libraries/%/utility, $(LIBRARIES))

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AVRDUDEFLAGS := $(addprefix -C , $(AVRDUDECONF)) -DV

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AVRDUDEFLAGS = -C $(ARDUINODIR)/hardware/tools/avrdude.conf -DV

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AVRDUDEFLAGS += -p $(BOARD_BUILD_MCU) -P $(SERIALDEV)

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AVRDUDEFLAGS += -c $(BOARD_UPLOAD_PROTOCOL) -b $(BOARD_UPLOAD_SPEED)

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LINKFLAGS := -Os -Wl,--gc-sections -mmcu=$(BOARD_BUILD_MCU)

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# figure out which arg to use with stty

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STTYFARG := $(shell stty --help > /dev/null 2>&1 && echo -F || echo -f)

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LINKFLAGS = -Os -Wl,--gc-sections -mmcu=$(BOARD_BUILD_MCU)

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# default rule

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.DEFAULT_GOAL := all

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@test -n "$(SERIALDEV)" || { \

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echo "error: SERIALDEV could not be determined automatically." >&2; \

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exit 1; }

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@test 0 -eq $(SERIALDEVGUESS) || { \

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echo "*GUESSING* at serial device:" $(SERIALDEV); \

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echo; }

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stty $(STTYFARG) $(SERIALDEV) hupcl

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stty -F $(SERIALDEV) hupcl

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$(AVRDUDE) $(AVRDUDEFLAGS) -U flash:w:$(TARGET).hex:i

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clean:

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@test -n `which screen` || { \

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echo "error: can't find GNU screen, you might need to install it." >&2 \

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ecit 1; }

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@test 0 -eq $(SERIALDEVGUESS) || { \

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echo "*GUESSING* at serial device:" $(SERIALDEV); \

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echo; }

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screen $(SERIALDEV)

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# building the target