Email notification if Azure IoT Hub Device disconnected state

Question

Email notification if Azure IoT Hub Device disconnected state

Latha 1

Hi,

I have followed below document for sending the email notification if received IoT Hub device disconnected state.

https://learn.microsoft.com/en-us/azure/event-grid/publish-iot-hub-events-to-logic-apps

I am receiving email notification but there is no device is disconnected state in IoT Hub. In Event Grid subscription, selected device disconnected state event. In logic app, do I need to add any condition? I have added same as mentioned document in Logic app. I have attached logicapp screenshot.
88542-logicapp-iothubdevicestate.png

Could any one hep on this issue?

Regards,
Latha

Answer 1

Satish 13,631 Microsoft Employee

Hello @Latha Thanks for reaching out to us!

Few Troubleshooting Steps:

1) Have you verified that all the LogicApp runs history ?
2) Please verify if you have selected the event type in the IoTHub events settings?
3) Check if you are able to see the connected & disconnected states for the Device Twin is getting changed?

We have verified the Document and were not able to repro the issue, as below images show the successful email alerts for Connected and Disconnected events.

The schema for DeviceConnected and DeviceDisconnected events have the same structure. This sample event shows the schema of an event raised when a device is connected to an IoT hub:

Verification from our side:

Email Alerts to my Inbox:

Please comment in the below section to get further help in this matter.

If the response is helpful, please click "Accept Answer" and upvote it.

Latha 1 Reputation point

2021-04-20T12:34:31.393+00:00

Hi,

Thank you for response. May be device status is changing back to connected state in device twin after disconnected status. Is there any option to see the history for device disconnected state?

Do we need to select both events "Device Disconnected" and "Device Connected"? To receive the notification for connected state back for receiving device disconnected state, do I need to add any conditions?

Regards,
Latha
Satish 13,631 Reputation points Microsoft Employee

2021-04-21T20:17:06.963+00:00

Hello @Latha

Do we need to select both events "Device Disconnected" and "Device Connected"?

YES, as you are interested in receiving these alerts, so you have to select both.

do I need to add any conditions?

No, not required(I am assuming your question is related with IoTHub event routing).
Please follow the tutorial as it is and you will be able to see the email alerts triggered.
Please see the Logic app flow as well, where a condition is added(Not sure if your question is related to LogicApp or not?)

If the response is helpful, please click "Accept Answer" and upvote it. So that it is helpful to others as well.

Email notification if Azure IoT Hub Device disconnected state

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