start-here.py

This is a good place to start.

BACnet is a peer-to-peer protocol so devices can be clients (issue requests) and servers (provide responses) and are often both at the same time. This sample has just enough code to make itself known on the network and can be used as a starting point for predominantly client-like applications (reading data from other devices) or server-like applications (gateways).

The SimpleArgumentParser is the same one the module uses, see Running BACpypes3:

args = SimpleArgumentParser().parse_args()
if _debug:
    _log.debug("args: %r", args)

The Application class has different class methods for building an application stack, the from_args() method is looks for the options from the simple argument parser. Custom applications can add additional options and/or use their own subclass:

# build an application
app = Application.from_args(args)
if _debug:
    _log.debug("app: %r", app)

Server-like applications just run:

# like running forever
await asyncio.Future()

Note

The ReinitializeDevice service can be used to quit the current application which is in turn wrapped by some supervisory service that automatically restarts it such as systemd or docker.