Dynamically calculating MONITOR_PORT?

[chrisspen]

Is there any way to dynamically calculate MONITOR_PORT while running make upload?

I have several Arduino's connected to my host, and I've written a Python script to figure how which ones correspond to each /dev/ttyACM* file. I'd like to plug in this script to the makefile so when I run make upload it will automatically set MONITOR_PORT to the right file. However, I can't find any documentation on how to do this.

[sej7278]

You could run your python script and pipe the input into MONITOR_PORT in your local Makefile in a similar way as we call shell commands within Arduino.mk, e.g.

MONITOR_PORT = $(shell /path/to/my/script.py)

and of course have your script output "/dev/ttyACM0" or whatever.

There's also PRE_BUILD_HOOK which may be of interest.

[sej7278]

can we close this?

[chrisspen]

Thanks for the update. It might be helpful if the make monitor was explicitly mentioned in the README.