Same Serial Port Connected in Two Flow files Not working

[avinash-choudhary]

Hi Team

I am trying to add COM2 in two flow files Flow1 and Flow2. The data is displayed in both flows initially . But when we disable and enable Flow1 then the Flow2 serial port is not displaying the data though it displays connected .

FLOW1

FLOW2

Initial Debug Message

Disable and enable FLOW2 from postman

Debug Message after disable and enable

As u noticed the Flow1 Data is not displaying in the Debug Window though both flows are connected

@dceejay
@Colin

Thanks,
Avinash

[edje11]

You can't open the same come port twice.
The easiest and only way is to split the output of one port node.

[avinash-choudhary]

Hi @edje11
I am able to use same COM port in two flows and getting output for both the flows.

[knolleary]

@avinash-choudhary please do not ping individual forum members.

What you describe sounds like a bug in the node. Disabling one of the serial nodes should not break the other one. Please raise an issue in the node-red-nodes repository.

[dceejay]

Seems to work fine for me on Linux - not sure what you are doing with Postman - are you disabling the tab or just the node ? And you are re-deploying in between times ? If I disable/enable in the editor it works fine (for me).

[avinash-choudhary]

@knolleary
Sure noted , wont include individual next time.
Ya will raise a bug

[avinash-choudhary]

Hi @dceejay

I am Creating Flow1 and Flow 2 from Postman with the api:
https://nodered.org/docs/api/admin/methods/post/flow

Disable and enable FLOW2 from postman using API:
https://nodered.org/docs/api/admin/methods/put/flow

After this Flow1 Serial Port COM2 stops displaying the debug message though connected.

Have Attached the api's i have used
Node RED Serial Port.postman_collection.json (4.6 KB)

Thanks,
Avinash

[avinash-choudhary]

Hi @dceejay

Where u able to run the postman api ?
was the error reproducible ?

Thanks,
Avinash