Asset Tracker V2 - Real-time Configurations

[Paul Oberauer]

Hello, is there any information on how to change the Real-time Configurations at runtime?

thanks in advance

[Øyvind]

Hello, 

According to the Asset Tracker v2 documentation, this should be possible from the cloud side:

The device retrieves its real-time configurations from the cloud service in either of the following ways:

• Upon every established connection to the cloud service, the application will always request its cloud-side device state that contains the latest real-time configurations.

• When the device exits Power Saving Mode (PSM) to publish data, and if the cloud-side device configuration has been updated while the device was in PSM, the application will request for the newly changed configuration.

Kind regards,
Øyvind

[Paul Oberauer]

Thank you very much for your answer. Unfortunately I have problems how to set the real time configurations inaws-IoT. Can I just edit the shadow and the configurations will be applied? Or how does that work exactly?

thanks in advance

[Markus Tacker (he/him)]

Paul Oberauer said:

Can I just edit the shadow and the configurations will be applied? Or how does that work exactly?

Yes, that is what the web application does as well, it modifies the desired.cfg properties in the device's shadow.

Paul Oberauer said:

Unfortunately I have problems how to set the real time configurations inaws-IoT.

Can you specify what problems you are facing?

[Paul Oberauer]

I am currently in active mode and trying to switch to passive mode via the real time configuration. For this I change the shadow in aws IoT (Manage -> Things->myThingy->Shadows ->Classic Shadow->Edit) like this:

"cfg": {
"act": false,
"gpst": 60,
"actwt": 120,
"mvres": 120,
"mvt": 3600,
"acct": 10
},

Even after waiting for a longer time and switching off/on, it does not switch to passive mode.

If I recompile Asset Tracker V2 and flash it to the Thingy91, then the shadow changes back to
"cfg": {
"act": true,
"gpst": 60,
"actwt": 120,
"mvres": 120,
"mvt": 3600,
"acct": 10
},
and does not take over the previously set values.

[Markus Tacker (he/him)]

Ok, that's not expected.

Which version of the firmware are you running?

[Paul Oberauer]

I use the mfw_nrf9160_1.2.3 firmware 

[Markus Tacker (he/him)]

And which version of the asset_tracker_v2?

[Paul Oberauer]

Unfortunately i don't know where i can find out the version of the asset tracker V2. But I use the version which is included in nRF SDK v1.5.0 Toolchain Manager which I downloaded on 12.04.2021.

[Markus Tacker (he/him)]

That should be version 1.5.0 as well. 

There have been quite a few changes since then, and we are about to release version 1.6 of nRF Connect SDK. You could have a look at that: https://github.com/nrfconnect/sdk-nrf/milestone/14

What would be interesting is too see the device logs from a device which is running in active mode, and where you then switch to passive mode on the cloud.