Arduino2Make

This is a tool to input Arduino platform configuration files and produce a GNU Makefile that can be include'd by your little project. It's been tested on projects using:

• Adafruit Feather nRF52832
• Adafruit Feather nRF52840 Express
• Adafruit ItsyBitsy nRF52840
• Teensy 3.2
• Teensy 4.0
• Teensy 4.1

I'm in the process of switching this over to an NPM module, because I've been using node to do some basic stuff (like auto-code formatting) and it's quite convenient to just have a mostly self-contained scripting system wrapped around a big ungainly collection of C++ code.

Maybe I'll also get it tested with the Adafruit SAMD stuff, as I have a PyRuler (which is mostly an Adafruit Trinket M0). I'm trying to beat into something useful (and writing something useful in Python seems like not something I wanna do...).

Usage:

yarn build (TypeScript transpilation)

./ar2mk.js folder/with/platform/board/txt/files other/folders with/libraries > include.win.mk (You'll need to create different files for Windows, Linux, and MacOS)

Then from your Makefile:

# Some 'location' details
ifeq ($(OS),Windows_NT)
	ARD=${HOME}/AppData/Local
	SERIAL_PORT=COM9
else ifeq ($(shell uname -s), Darwin)
	ARD=/Applications/Arduino.app/Contents/Java/hardware
	SERIAL_PORT=$(shell ls /dev/cu.usbmodem5*)
else
  $(error Linux support untested, but probably works like Darwin)
endif

# Some Teensy inputs:
# Your MPU will have different inputs required
# When you try to build, the include.*.mk files will tell you the vars you need to define
IN_SPEED=24
IN_USB=serialhid
IN_OPT=osstd
IN_KEYS=en-us
EXTRA_TIME_LOCAL=0
BOARD_NAME=teensy31
TOOLS_PATH=${ARD}/tools/arm
RUNTIME_HARDWARE_PATH=${ARD}/teensy
CMD_PATH=${ARD}/tools
SERIAL_PORT_LABEL=${SERIAL_PORT}
SERIAL_PORT_PROTOCOL=serial
# These seem common for everything...
PROJ_NAME=filename
BUILD_PATH=output-dir

# My custom flags
COMPILER_CPP_EXTRA_FLAGS=-DDEBUG=2 -DTEENSY

# Libraries to use:
LIB_WIRE=1
LIB_SPI=1

# Include path commands
USER_INCLUDES=-Iinclude

# C++ source files (can also set S and C files this way)
USER_CPP_SRCS=file0.cpp file1.cpp

ifeq ($(OS),Windows_NT)
  include teensy.win.mk
else ifeq ($(shell uname -s), Darwin)
  include teensy.mac.mk
else
  include teensy.lin.mk
endif

I started this because building in the Arduino IDE is quite slow, for a variety of reasons that I could go into. Anyway, I write C++ to run on my devices, not .ino files, so I don't need half of what causes the speed problems (#include file detection), and the other half seems silly.

Currently this thing works acceptably for my building my keyboard firmware (https://github.com/kevinfrei/FreiKey). I've got both the generated include files, as well as the make files for the various keyboards I've made there. Feel free to check it out.

I also used it for a little test project for a pull request test you can see here: (https://github.com/kevinfrei/ST7789_135_240_test)

Currently

It seems to work reliably for my needs. I also added some custom modification stuff that I should document somewhere. Here's how I use it in my firmware: (https://github.com/kevinfrei/FreiKey/blob/main/src/adafruit-make-config.json)

It creates a compile_commands.json file that you can use to get fully accurate VS Code auto-complete, which is pretty excellent.

I can build using 24 cores in a few seconds, and then I flash the firmware. Works like a charm from both my Windows AMD Ryzen 5900X box, i7 MacMini, and my M1 Pro MacBook Pro.

I don't intend to deal with the bootloader stuff. That happens rarely enough it doesn't seem worth the effort. Just use the Arduino IDE if you have to deal with the bootloader.

TODO:

• Switch from GNU Makefiles to CMake stuff (or just add CMake support?)
• Add ability to pull stuff from a board index json file
• Add ability to pull down libs from a library index file, not just local
• Get it working on the AdaFruit AVR stuff
  • I've never actually used Arduino-branded hardware :/
• Make the thing also spit out VSCode settings! This would be awesome (and not particularly difficult, at this point, either)
  • Bonus points: Make it an actual target, so the Makefile will update it!
• And, finally, eventually, make some tests, probably. Jest seems reasonable. Seriously, I've found it pretty darned useful in a few other projects...