Azure IoT Hub
An Azure service that enables bidirectional communication between internet of things (IoT) devices and applications.
1,135 questions
1 answer
Uploading a file from IOT device to Cloud in C++
I currently have an IOT device code written in C++. I would like to upload files from the device to the cloud. I found this article which demonstrates how to achieve that in C#. I can not find anything for c++. Any suggestions on how I can upload files…
asked 2020-12-14T19:36:32.83+00:00
SilverChips
71
Reputation points
commented 2020-12-18T11:25:19.16+00:00
António Sérgio Azevedo
7,666
Reputation points Microsoft Employee
3 answers
IOT Central not sending command
I'm a bit new to IOT, but I have finally managed after a bit of tinkering to get my actual device (STM32L475 Development board) talking to both the IoT Hub, and AzureIOT central. I can receive telemetry ok, and in the IoT Hub I can send a command to…
asked 2020-12-15T21:45:15.877+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(57.599999999999994, 95%, 15%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ERA%3C/text%3E%3C/svg%3E)
Rob Ashworth
1
Reputation point
commented 2020-12-18T10:45:14.197+00:00
Rob Ashworth
1
Reputation point
1 answer
One of the answers was accepted by the question author.
How to send message to device after provisioning with mqtt x509?
I'm using the azure_sdk_for_c to provisioning with Azure it hub following the example paho_iot_provisioning_sample. I can successfully get the Hub Hostname and device ID from DPS but I don't know how to publish a message to the device. May I need to…
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(268.8, 63%, 36%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EHV%3C/text%3E%3C/svg%3E)
1 answer
Azure CLI for connecting device to cloud
I'm trying to take the same steps that allowed me to connect a microcontroller to Azure to be able to publish messages through MQTT but instead of doing it through the web UI I'm trying to use the Azure CLI. However, this is not working at the moment as…
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(211.20000000000002, 6%, 30%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EC%3C/text%3E%3C/svg%3E)
1 answer
Impossible to create a second endpoint
Each IoT Hub route is associated with an endpoint. Currently, seems not possible to create routes nor endpoints using the Python SDK. Routes can be created using the Azure Client, but an endpoint must exist previously. So all this process described is…
asked 2020-12-11T15:04:58.733+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(12.8, 26%, 11%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EMN%3C/text%3E%3C/svg%3E)
Millán Fernando
6
Reputation points
commented 2020-12-16T07:50:06.827+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(54.400000000000006, 38%, 15%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EQ%3C/text%3E%3C/svg%3E)
QuantumCache
20,031
Reputation points
3 answers
What permission or role is necessary to access Iot Devices and Query explorers in Azure Iot Hub ?
In Azure IoT-Hub (portal), IoT devices and Query explorers are not accessible to users who do not have at least the contributor role. There does not seem to be a built-in role to access these explorers so I would like to create a custom role : basically…
asked 2020-08-27T10:25:54.627+00:00
Alexandre
346
Reputation points
commented 2020-12-15T17:47:12.417+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(86.4, 88%, 18%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EAN%3C/text%3E%3C/svg%3E)
Alexandre Nedelec
1
Reputation point
1 answer
Azure IoTHub Python SDK: ConnectionFailedError while sending messages to Azure IoTHub using Python SDK
While sending messages to Azure IoTHub from Python SDK, frequently the connection is lost with different error messages viz: 'Failed to receive on socket', 'transport.connect raised error' Attached the screenshot. And some times, IoTHub is…
asked 2020-10-20T14:11:36.86+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(284.8, 54%, 37%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EPP%3C/text%3E%3C/svg%3E)
Praveen Palakodeti
11
Reputation points
answered 2020-12-15T01:19:47.76+00:00
António Sérgio Azevedo
7,666
Reputation points Microsoft Employee
2 answers
Azure resouces external access via IP Address
We have a Quectel ioT device that converts the URL to IP address and then connects a TCP socket to GET firmware updates. I know shared WebApp and Blob Storage do not allow IP address access to resources, so I thought maybe Allocation a Public IP,…
asked 2020-12-11T20:30:30.207+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(3.2, 49%, 10%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EM%3C/text%3E%3C/svg%3E)
Mohau
1
Reputation point
answered 2020-12-14T20:57:31.147+00:00
Sander van de Velde
29,461
Reputation points MVP
2 answers
Integrating modelId from Azure Digital Twin into Time Series Insights
Hi there, What I'm currently trying to get my head around is the ability to integrate the model Id from an Azure Digital Twin instance within Time Series Insights. I understand that Time Series Insights (Gen2) accepts the datatype of a string,…
asked 2020-11-27T15:33:16.02+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(192, 79%, 28%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EMK%3C/text%3E%3C/svg%3E)
Matas Kaucikas
21
Reputation points
commented 2020-12-14T15:55:11.033+00:00
António Sérgio Azevedo
7,666
Reputation points Microsoft Employee
1 answer
IoT Hub C sdk not generating a new SaS Token
I'm using : NodeMCU programmed through arduino libraries (C SDK) MQTT Protocol, IoTHub, Device configured as Symmetrical connection the device is disconnecting after 65 minutes of connectivity but not generating a new SaS token, then the connecting…
asked 2020-11-26T14:13:11.253+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(208, 76%, 30%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EAW%3C/text%3E%3C/svg%3E)
Axiom Works
1
Reputation point
commented 2020-12-11T02:00:10.577+00:00
QuantumCache
20,031
Reputation points
1 answer
What is the correct way to include MQTT topics in Message class
I have developed an Azure IoT Edge module in Python which subscribes to MQTT messages from a device, this device is read only, means I can't login or change anything in the device except to receive messages using MQTT. I am sending the MQTT message…
asked 2020-12-04T19:05:06.257+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(275.2, 31%, 36%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EPS%3C/text%3E%3C/svg%3E)
Pranav Sanghadia
6
Reputation points
commented 2020-12-10T06:38:02.093+00:00
QuantumCache
20,031
Reputation points
1 answer
Azure Stream Analytics Job Reference Input Join Error
Hi Team My Inputs for Stream Analytics Job: Input 1: Stream Input from IoT Hub Input 2: Reference Data from Azure Blob Storage I am trying to use following query to join stream input (deviceinput) and reference input…
asked 2020-11-18T14:11:41.307+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(204.8, 48%, 29%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EKK%3C/text%3E%3C/svg%3E)
Kamlesh Khollam
21
Reputation points
answered 2020-12-10T06:20:46.003+00:00
Kamlesh Khollam
21
Reputation points
1 answer
IoT Hub - IoT Edge Runtime Responce status : 406 -- The device is offline or not sending status reports
Hi Friends, I am working on Live Video Analytics POC, last Friday (13th Nov) all azure services are working fine and end of the day I was stopped Virtual Machine and StreamingEndPoint services in azure poral. Today I re-started those two services…
asked 2020-11-16T11:29:31.64+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(147.20000000000002, 43%, 24%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ERR%3C/text%3E%3C/svg%3E)
Ramachandra Reddy
1
Reputation point
answered 2020-12-09T23:37:07.627+00:00
QuantumCache
20,031
Reputation points
2 answers
How to get a count of all telemetry messages currently available ?
I am currently doing something like this to get all available telemetry (device to cloud messages). ReadEventsAsync would block once there are no new messages. I know I can specify a time period but then that will be a wait game. Is there a way for me…
asked 2020-11-28T16:05:52.9+00:00
SilverChips
71
Reputation points
commented 2020-12-08T21:53:53.75+00:00
QuantumCache
20,031
Reputation points
1 answer
Receive reported updates from device twins from a backend app with mqtt
I want to know how to receive reported messages sent by IOT devices to the cloud from my backend app . From my research I have found out the way to do it is with the function twin.get( ){ } . But I cant exactly figure out how to write that…
asked 2020-11-28T04:40:49.837+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(128, 20%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ESJ%3C/text%3E%3C/svg%3E)
Senuda Jayalath
41
Reputation points
commented 2020-12-08T20:10:49.193+00:00
QuantumCache
20,031
Reputation points
1 answer
One of the answers was accepted by the question author.
where get complete IoT solution with best practices steps
need to get complete IoT solution with best practices steps without use ready solutions like ( iot central or solution accelerators ) and connect it with physical devices as ESP8266 ?? . thanks in advance .....
asked 2020-12-07T20:21:30.607+00:00
Ahmed Assad
266
Reputation points
commented 2020-12-08T19:48:58.89+00:00
QuantumCache
20,031
Reputation points
1 answer
One of the answers was accepted by the question author.
Error message "Blocked by CORS policy" when accessing IOT hub from React application
I have been trying to publish and subscribe to device twins from my backend app in React JS. This is the React JS code to get reported properties import React from 'react' function Greet() { const connectionString = '##########'; …
asked 2020-12-01T06:53:22.463+00:00
Senuda Jayalath
41
Reputation points
accepted 2020-12-08T16:16:36.217+00:00
Senuda Jayalath
41
Reputation points
1 answer
One of the answers was accepted by the question author.
Fail to build up Azure IOT-SDK- C with Linux (ubuntu 14.04) environment
Dear Sir : My Linux environment Ubuntu : 14.04.06 (LTS) gcc : 4.8.4 cmake : 2.8.12.2 CURL : 7.35 azure-iot-sdk-c SDK version : LTS_07_2020_Ref01 I follow this guideline as below to set up my Linux environment and got some…
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(220.8, 63%, 31%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EH%3C/text%3E%3C/svg%3E)
1 answer
Getting "NoRegisteredProviderFound" Error While Trying to Use IoTHub
Since a few days ago, I'm completely unable to use my Azure IoTHub. When I click on most of the tabs within the resource, I get the following error: {"error":{"code":"NoRegisteredProviderFound","message":"No…
asked 2020-11-21T22:51:57.497+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(182.40000000000003, 66%, 27%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EE%3C/text%3E%3C/svg%3E)
erdy
6
Reputation points
commented 2020-12-07T16:57:43.873+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(214.4, 74%, 30%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EAM%3C/text%3E%3C/svg%3E)
AshokPeddakotla-MSFT
28,226
Reputation points
0 answers
Azure Function receiving duplicate messages from Event Grid
I've a very simple Javascript Function App being sent messages from an Event Grid subscription with a filter. The function reliably gets two messages for every one that arrives at the IoT Hub that the Event Grid is being fed by. I've verified that it…
asked 2020-12-01T19:11:34.69+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(35.2, 91%, 13%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EKM%3C/text%3E%3C/svg%3E)
Ken Martin
111
Reputation points
commented 2020-12-07T06:07:53.357+00:00
MayankBargali-MSFT
69,421
Reputation points