Abp - automatic resgistration

End Devices (Nodes)
1

Hello,

I have a gps tracker which was working perfectly in V2 in ABP mode.
Now I have converted it V3 → no change in the device itself which still in ABP.

In order to have it alive, I have created in V3 an end device and as soon I push the register button in the end device creation page, the tracker comes alive like a charm.
I have however a problem : the tracker is installed in my car and started/stopped togheter with the car. It means each time its power supply is turned on/off. In V2, the tracker came alive and I could see its activity in the console. Now in V3, in order to have it working, I need to recreate each time the end device in order to have it registered and working.

What is wrong ? What can I do in order that it comes alive each time I start my car

Thank you in advance for the help.

2

additional information : I have a gateway and I can see its activity. As soon I turn on the tracker, I can see immediately that the tracker send data.

3

Is FCount conserved or does it restart from zero each time it powers on?

4

In device settings go to network layer advanced MAC settings and check the box ‘Reset frame counters’.

1 Like
5

perfect !! thank you

6

If that means it is forgetting the frame count, that is a violation of the LoRaWAN spec.

The mentioned frame count reset allowance is a bit of a hacky workaround for that violation, but it is still very much a violation.

A proper LoRaWAN device absolutely must remember key details of what it has done before - this requires either battery backup or a high write count storage device like an FRAM or some careful strategization around a medium write count device like an EEPROM.

7

I am not sure I understand it all and you are certainly right…
I have no idea how I could find a solution. I do that for fun and it works now, that is all it count… :grinning:

9

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