How can I get the current state of my device?

General
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1

Hello everyone!
I'm kinda new to Node Red and I'm facing some issues, so I hope somebody more experienced than me can help me.
The thing is I'm trying to get the current state of my LoRa device using a GET HTTP in node and HTTP out node, plus a web socket out node to display the template I created (I followed a tutorial I saw on YT). By doing this I get to see the device's state only if I go to my URL before the device sends an uplink, but the goal is to check the device's state anytime, included after it sends the uplink, so how can I do it?
I saw there's a dashboard option where I do actually see the device's status anytime but in my case this info should be availabe via URL, so I don't think the is the right solution...

This is what my flow looks like (disclaimer: I'm showing a different device but it's the same machanism).

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When I go to the URL the page doesn't show the infos, and I have to wait for the device to send an uplink which requires a lot of time. This is how the page looks like after I manually activate the device.
image

To sum up, I'd like to see the last pic everytime I go to the URL, instead of waiting an uplink from the device.

Thanks in advance to anyone who will help me and I'm sorry for my bad English.

2

Welcome to the forum.

Could you post the Youtube link?

It is hard to know what it is saying without watching it.

3

I find the use of HTTP requests to obtain device status confusing (I mostly use MQTT) but I think this might be a solution:

Request the device status fairly frequently, perhaps after a 5 seconds delay from the last response.
Store the value in a flow context variable.
Change your template to output the value of the context variable.

4

So this LoRa device..... Does it have an IP?

If it does, you could ping it. :person_shrugging:

5

Hi, thanks for the reply!
Here's the video and page I used as a reference:

6

Hi, thanks for the advice!
I'll do some research about context variable and see if it works out.

7

I don't know the device's IP. It's connected to a Milesight gateway and I'm using its Node Red extension to get the Lora inputs.

8

Sorry, I am not too familiar with LoRa stuff myself.

But.... If I am not wrong, it connects to a WiFi network - or what ever.
It gets an IP address when it connects.

So: as long as it is connected to a network, it will have an IP address.

But I am way out of my depth with LoRa stuff.

Maybe someone else could clarify this point.

9

I've figured it out! I've done lot of changes but mostly important I used global variables and deleted the web socket out node.

Thank you for your time :raised_hands:

10

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