CLI Suggestion : Export compiled binary

[dimitre]

In Arduino command line interface
It would be great to have a parameter that compiles and export compiled binary only.

Example of usefulness: inside Arduino IDE the max baud rate I can upload a sketch to ESP8266 is 115200 and using esptool.py I can upload using baud 3000000.
Thank you

[matthijskooijman]

There is an "Export Compiled Binary" in the "Sketch" menu. Is that what you mean?

[dimitre]

Sorry @matthijskooijman it is about CLI, command line arduino options. I'll edit my post for clarification

[dimitre]

Just as an usage example, one line to compile and export binary from a sketch

/Applications/Arduino.app/Contents/MacOS/Arduino --export ArduinoSketch.bin --board esp8266:esp8266:generic:CpuFrequency=80,FlashFreq=40,FlashMode=dio,UploadSpeed=230400,FlashSize=512K64,ResetMethod=ck,Debug=Disabled,DebugLevel=None____ ArduinoSketch.ino

[andrethomas]

Did you get this to work?

[dimitre]

@andrethomas no. in fact I was meaning a new parameter in Arduino CLI to be able to export a binary compiled file via command line. This is an improvement suggestion.

[andrethomas]

Oh ok, I already do that with platformio but wanted to do it with arduino - somehow the linking scripts work different for the esp

[andrethomas]

~/arduino/arduino -v --board esp8266:esp8266:d1_mini:CpuFrequency=80,FlashSize=4M1M --verify sketch.ino --preserve-temp-files --pref build.path=/build/

Causes the .bin file to be in the /build/ folder specified so there's a way to do it I guess

[pkoevesdi]

Thanks You for the solution.
Let me add this, since I stumbled upon it:

• You can't set the build path to the sketch path, see Setting build-path to current dir arduino-builder#4 (comment). A subfolder of it works well.
• To get the --board parameter set up everything inside the arduino gui, then run arduino --verify your_sketch.ino -v and fish out the value behind -fqbn=

[matthijskooijman]

Thanks for the suggestion.

Since this issue was created, https://github.com/arduino/arduino-cli was created, which will be the backend for the java IDE as well in the future. Since that offers a much more complete CLI interface, I expect that the java IDE commandline interface will become deprecated at some point, and will likely not be developed any further. For that reason, I'm going to close this as wontfix.

As for this particular request, I suspect arduino-cli does not implement it yet, but the same approach as above would work: Run a compile with a fixed build path, and extract the binary from the buildpath afterwards. See also https://arduino.github.io/arduino-cli/latest/commands/arduino-cli_compile/

[cmaglie]

Actually it's the opposite: arduino-cli will always export the compiled binary inside the sketch folder.

To be precise until arduino-cli 0.10.0 the binary was exported in sketch/sketch.ino.board-id.hex where "board-id" is the board identifier.
We recently merged a patch that changes this behaviour and now the cli export in sketch/build/board-id/sketch.ino.hex that is muuuch more clean, this will be available in arduino-cli >=0.11.0 (not yet but soon to be released).

[pkoevesdi]

Thanks for pointing out.
Is andrethomas' (and my current) solution using the java IDE commandline interface? (I was not well aware of what's happening when calling arduino from command line.)