Extracting Data from TTN to my Server

Application Development
21

@celiagarridoh

I have implemented HTTP integration in my application. But the only thing I want to use from this integration is to schedule downlink messages to my devices.

Can you please help what do I need to enter in the fields such as
Process ID: As far as I think, it is user defined.
URL; what would be the endpoint url(I am unable to understand here what does it mean by endpoint url)
Method: POST
Authorization : I guess this is also user defined.

I am a bit confused what is the Endpoint url here.

The main motive for me to use this integration is to independently use this integration and schedule downlink messages to devices, using my own web application.

22

@celiagarridoh
Continuation from the above question:

I am using the following URL to schedule downlink messages:
https://integrations.thethingsnetwork.org/ttn/api/v2/down/my-app-id/my-process-id?key=ttn-account-v2.secret
I have entered my-app-id/my-process-id and secret key, but in response I always get 502 Bad Gateway/ nginx/1.11.10

23

Hi,

I had never tried to implement the HTTP integration, but I tried yesterday to see how it works. As far as I know, you’re right, the Process ID is user-defined and the Authorization is optional. However, I’m not sure about the field URL.

I tried what you were trying to do, and I also got the “502 Bad Gateway” error. Then, I tried to use the URL of a Channel I created some months ago in ThingSpeak (https://thingspeak.com/), and it sends data from TTN to Thingspeak via HTTP (however, you were interested in downlink). Finally I tried to introduce the IP address of a server I created (http://xxx.xxx.xxx.xxx:8080/) in the URL field and it works, I receive a JSON from TTN and I suppose that sending downlink data to end-devices would not be a problem.

I’m also starting with TTN and so on, I hope these options can help you. Anyway, I’m sure some other people know the answer :wink:

Regards,
Celia

1 Like
24

Hi again, this tool may be useful for inspecting your HTTP requests:

https://requestb.in/

Celia

25

Thanks @celiagarridoh, just received the json data at my server using the step you had provided. The json data included the downlink url which is working perfectly to send downlink data. Great help ! :slight_smile:

26

@celiagarridoh,
Hi, anything about Gateway’s Device EUI??

27

Hi,

Try this: Ic880a concentrator with Raspberry pi Gateway

Regards,
Celia

28

@celiagarridoh

Hi,

Can we change the operational frequency of RN2903 Lora Module?
As of now its being operated on 868 Mhz and in India this band is not licence free. TTN says it works on 865-867 Mhz but my module frequency does not change?
Any help

29

I’ve never used this module, but as far as I know it operates in the 915 MHz frequency band, doesn’t it?

http://ww1.microchip.com/downloads/en/DeviceDoc/50002390B.pdf

I’m sorry that I can’t help you.

Regards,
Celia

30

Hi Celiagarridoh ,

Any idea if TTN supports 2 different Ports for uplink and downlink?
Currently it allows 1700 port on the Gateway to uplink and downlink. Can we change downlink port other than 1700?

31

What is the benefit of separating these function to different ports?

Andrei

32

I don’t believe you can.Review: RN2903 AU firmware

Andrei

33

Hi celiagarridoh ,

Is there any issue with Data Packets logs on the TTN console, my gateway and devices are working fine but no data on the console since 3-4 days,

Kindly advice,
Zaheen

34

Hi,
I am able to receving the uplink messages in Node.js(on console). Now i want to send those received uplink messages to my server(local host:xxxx) please tell me the procedure how to do this.

your help is most valuable to me.
please give me reply
Thank you
Regards,
prakash

35

Hi,

I am so sorry that it’s been such a long time since you asked me, but I was finishing my exams at university. I’ve been a time disconnected, my apologies.

In response to @LoraWANSMARU, I cannot confirm that, I would also like to know the answer.

In response to @saiprakash, I think I used the “socket-io” client on Node.js:

require('socket.io-client')
io.connect('http://localhost:xxxx', { reconnect: true, query: "var=abc" })
socket.emit('abc', ...)
[…]

I send the data using the emit function, you can take a look while I update my nodes and, in case you need further information, don’t hesitate to ask.

My apologies one more time for being away such a long time, now I came back to stay :wink:

Best Regards,
Celia

1 Like
36

The data stream is like that : Lora Node -> LoraGateway -> TTN ->myAPIserver.
We still cannot analysis the specific data on TTN, we only can read the data on our server, is that right ?
What is the advantage of this ?
Instead we can use thingspeak server directly and the LoraGateway sends the package from lora Nodes to thingspeak directly, so that we can read specific data with thingspeak api interface. This is so convenient and we only need one server.

37

If you only want your nodes to be able to connect to your LoRa Gateway and you only want your nodes to be able to connect, you indeed don’t need the TTN backend.
With TTN, your node could also connect to my Gateway (and all the others out there) and other nodes can use your Gateway to connect.
It is the difference between a private network and a public one.

38

Also, the (TTN) LoRaWAN network servers provide downlinks, OTAA, ADR and later on class B and C. It’s not an easy task to do all that yourself.

40

Yes, this is right. I remember if I use thingspeak API interface, I do not have these functions to setup, Thanks

41

Your mean my lora node is connected to your (or others) gateway. Yes, that seems to be more public.