AWS IoT Shadows

RE: AWS IoT Shadows

JONATHAN LL — Wed, 10 Nov 2021 16:03:07 GMT

Hi,

You can follow the documentation here: https://infocenter.nordicsemi.com/topic/ug_trace_collector/UG/trace_collector/intro.html?cp=10_3_3

Regards,
Jonathan

RE: AWS IoT Shadows

Aleksa — Mon, 08 Nov 2021 17:39:15 GMT

How should I do that?

RE: AWS IoT Shadows

Heidi — Thu, 04 Nov 2021 15:56:21 GMT

Okay, so you've confirmed that your named shadows are being published but you're not receiving them on your nRF9160 DK?

Could you take a modem trace while the application is running so we can take a closer look?

RE: AWS IoT Shadows

Aleksa — Mon, 01 Nov 2021 13:00:29 GMT

Hi Heidi,

I've used both aws test client and mqtt.fx software to connect and verify that my named shadows work as intended. But for unknown reasons, my nrf9160dk board only works properly for the classic(un-named) shadows. I have verified that custom topics do work properly for nrf9160dk on aws iot.

Best Regards,

Aleksa

RE: AWS IoT Shadows

Heidi — Mon, 01 Nov 2021 12:29:21 GMT

[quote user="Aleksa"]However if I want to subscribe to named shadow deltas, shouldn't it be:
"$aws/things/<deviceId>/shadow/name/+/update/delta"[/quote]

Yes, you are correct, my previous answer has been edited.

[quote user="Aleksa"]I am unable to receive messages yet from named shadows.[/quote]

You can subscribe on the same topic in the AWS IoT console in the browser (see the image below) to see what's getting sent/received (see View MQTT messages with the AWS IoT MQTT client).

RE: AWS IoT Shadows

Aleksa — Tue, 26 Oct 2021 08:10:27 GMT

Hi Heidi!

Thanks for a fine answer. However if I want to subscribe to named shadow deltas, shouldn't it be:
"$aws/things/<deviceId>/shadow/name/+/update/delta"
I am unable to receive messages yet from named shadows. Hopefully will get there soon.

Best Regards,

Aleksa

RE: AWS IoT Shadows

Heidi — Mon, 25 Oct 2021 14:38:03 GMT

Hi!

Yes, they behave exactly the same.

You can subscribe to all shadow topics of a device using the wildcard topic for the device: "$aws/things/<deviceId>/shadow/#". However you most likely only want the delta topics: "$aws/things/<deviceId>/shadow/+/update/delta" will subscribe to all named shadow deltas. You should not mix named and classic shadows.

The number of topics in the firmware is needed to reserve space for the topic string, and a wildcarded topic also counts as 1 (one) topic.

Best regards,

Heidi