generator/mavgen.py: honour MDEF from environment in dynamic generation

[peterbarker]

Closes #596

[MauroPfister]

Hi @peterbarker, any chance this could be merged at some point?

[peterbarker]

Hi @peterbarker, any chance this could be merged at some point?

Can you say that you've tested and that this does actually work for you?

[MauroPfister]

Yes, I can confirm that this is working on Ubuntu 22.04 and Python 3.10.7.

I installed pymavlink with pip install . from your branch and the message definitions from https://github.com/mavlink/mavlink. Then, I tested that the following code snippet works:

from pymavlink import mavutil
import os

os.environ["MAVLINK20"] = "1"
os.environ["MDEF"] = "path_to_my_custom_message_definitions"

mavutil.set_dialect("my_custom_dialect")

[peterbarker]

Yes, I can confirm that this is working on Ubuntu 22.04 and Python 3.10.7.

I installed pymavlink with pip install . from your branch and the message definitions from https://github.com/mavlink/mavlink. Then, I tested that the following code snippet works:

from pymavlink import mavutil
import os

os.environ["MAVLINK20"] = "1"
os.environ["MDEF"] = "path_to_my_custom_message_definitions"

mavutil.set_dialect("my_custom_dialect")

Thanks for all of that!

I've merged this now.