Initiate device with object_list

[majuss]

I try to initiate a controller with a object_list. I found inconsistencies, sometimes its called objects_list.

I do the following, but the property is still empty. This even occurs when I use the object list from the example: https://bac0.readthedocs.io/en/latest/controller.html#object-list

import asyncio
import BAC0
from bacpypes3.object import AnalogInputObject


bacnet = None


analog_input = [AnalogInputObject(
    objectName='Temperature Sensor',
    presentValue=23.5,
    units='degreesCelsius'
)]

async def main():
    # Create task for running coroutines concurrently
    # Replace with your actual BACnet device address and  details

    async with BAC0.start(ip="192.168.1.216/24") as bacnet:
        my_device = await BAC0.device(object_list = analog_input, network=bacnet, device_id=1725101, address ='17251:1' )
        print(my_device.properties)

if __name__ == "__main__":
    asyncio.run(main())

[ChristianTremblay]

object list is to create the local "image" of a remote controller. Not to create a local object in the running instance of BAC0. From the definition of your list, I suspect you mixed both concepts.

[majuss]

Ah okay, could you please provide a complete minimal runnable example how I can initiate the controller with the object_lsit?

Because when I use you example object_list it also is empty:

import asyncio
import BAC0
from bacpypes3.object import AnalogInputObject


bacnet = None


my_obj_list = [('file', 1),
             ('analogInput', 2),
             ('analogInput', 3),
             ('analogInput', 5),
             ('analogInput', 4),
             ('analogInput', 0),
             ('analogInput', 1)]


async def main():
    # Create task for running coroutines concurrently
    # Replace with your actual BACnet device address and  details

    async with BAC0.start(ip="192.168.1.133/24") as bacnet:
        my_device = await BAC0.device(object_list = my_obj_list, network=bacnet, device_id=1725101, address ='17251:1' )
        print(my_device.properties)

if __name__ == "__main__":
    asyncio.run(main())

Or is it correct that the property objects_list is empty because these are the ones the controller actually finds on the network?

[majuss]

@ChristianTremblay Hi Christian, I also looked at bacpypes3 directly, but the documentation is really sparse and I don't really understand the concept behind the library. I would be very happy about a minimal example.

EDIT: We want to create a simulated controller standalone with datapoints, we don't want to mirror an existing one or connect to a physical controller.

[leanfm]

In order to simulate a BACnet device, you don't need to use the device class, which is meant to connect with other devices on the network. You can create a BAC0 object and then create points into it. This page is the right example https://bac0.readthedocs.io/en/latest/local_objects.html

[majuss]

Thank you @leanfm ! But unfortunately the doc example is missing the code: https://bac0.readthedocs.io/en/latest/local_objects.html#models "# code here".

Furthermore most of the "samples" are outdated and won't run with the bacpypes3 version of the lib, for example: https://github.com/ChristianTremblay/BAC0/blob/main/samples/excel_from_discovered_devices.py

So I want to create a local device with objects and a way to react to who_is requests from the network. Is there a way to do this?

[ChristianTremblay]

Try this : https://github.com/ChristianTremblay/BAC0/blob/main/tests/manual_test_create_device.py

[github-actions[bot]]

This issue had no activity for a long period of time. If this issue is still required, please update the status or else, it will be closed. Please note that an issue can be reopened if required.