How to dectypt the messages sent by mDot box in Lora demo mode

[Vinesh Hanumantharayappa]

Hi,

I am very new to Conduit. So far I am able to try the LoRa demo option in mDot Box. I am getting some data in encrypted form (like a series of small images). I need a function which decrypts it into the data sent by the mDot box. Your help will be highly appreciated.

Thank you

[Peter Ferland]

The data packet format is described here: http://www.multitech.net/developer/software/dot-box-and-evb-software/data-packet-format/

If you are using nodered make sure that the LoRa input node is in binary mode so you an decode it.

[Steve Kovarik]

Hello Vinesh

Assuming you have a MultiTech Conduit Gateway AEP version that has Node-Red,
once you are in Node-Red drag a “LoRa in” node, a “Function” node and the
“Debug out” node onto the canvas then connect the “LoRa in” to the “Function”
node and connect the “Debug out” node to the “Function node”. Next double click
on the “Function” node and delete [return msg;] on line 2. Then copy and
paste the code at the link below into the Function node.
Then select “OK” and “Deploy”. Now as LoRa packets are received and show up
in the debug tab you should notice “temp”, “x,y,z”, “baro_preasure” and “lux”
with decrypted data sent from the MTDOT-BOX in LoRa Demo mode.
https://webfiles.multitech.com/mmm/EVBParserLatest.txt

-Best Regards

[Vinesh Hanumantharayappa]

Thank you Steve

[Steve Kovarik]

Hi Vinesh

Another option is to follow the video at this link https://www.youtube.com/watch?v=r7ez4pd9N2c

The code to create the function node at the 6 minute mark is at this link

https://webfiles.multitech.com/mmm/LoRaDemoFnNode.txt

-Best Regards

[Vinesh Hanumantharayappa]

Thank you Steve, is it possible for you to provide a code for the function block which decrypts the location data in Survey GPS mode. Or suggest me any way to obtain GPS data of mDot box to Gateway. I just wanna get GPS coordinates on the Node Red’s debug console for further processing

[Steve Kovarik]

Vinesh

Using the MTDOT-BOX outside in “Single Survey” or “Survey Sweep” modes can
send GPS data to the Conduit. You must first configure the MTDOT-BOX to
send data to the Conduit using the command AT+DATA=1 and save with AT&W
You will also need to insert a micro SD memory card behind the Conduit front
panel to store survey data. Here is a link to DOTBOX_GOOGLE Node Red flow
that can be imported and used to view GPS data on Google maps. As shown at
the 14:40 time in the video at this link https://www.youtube.com/watch?v=r7ez4pd9N2c
https://webfiles.multitech.com/mmm/DotBox_Google.txt

[Richard Wenner]

Why is everything here like drawing teeth? If Vinesh had not raised his question – where would the data have been seen?

[Steve Kovarik]

Hi Richard

My apology, our developer site, videos and forums are intended to help
developers of all skill levels use our products. Unfortunately it is very
difficult for us to cover every possible use case in these mediums.

By default all survey data is stored on the MTDOT-BOX and can be viewed on
the screen or downloaded off the device for analysis. This is documented on
our developer site http://www.multitech.net/developer/software/dot-box-and-evb-software/survey-sweep/

We are happy to provide a path for our customers to “ask” and obtain answers
due to the myriad of applications that our Development Platform can be used
in. We are open to any recommendations that you may have to help us help you
(our customers) better.

-Best Regards

[Richard Wenner]

Steve, You are making me feel bad at my late-night outburst now! These sites are all great and extremely well documented (first class) but obviously written by folk who know the products AND these site(s) very well. Cross-referencing say the video with that mass of Node Red code would have helped. The videos are minutely detailed and then miss out these vital links. They just appear from nowhere.

[Steve Kovarik]

Hi Richard

Thank you for taking the time to provide feedback, it is through the insight
from those on the outside looking in that we are able to truly improve our
customers experience. I thank you for that. I will personally see to it that
future videos are more detailed and complete. Thanks for using MultiTech!

-Best Regards

[Richard Wenner]

I did a brief video on the topic https://youtu.be/WizST6gighs

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