azure-iot-hub

问题 I am already using an IoT Hub and have configured message routing to route TwinChangeEvents to an Event Hub. An Azure function with an EventHubTrigger processes the messages. This works perfectly fine. Now, I wanted to configure message routing to route DeviceLifecycleEvents to another Event Hub. Again, another Azure function with an EventHubTrigger should process the messages. However, the function is not triggered when I connect or disconnect devices. When I change the data source of the

问题 I am rehistering succesfully a device in a Azure IoT hub via device provisioning service, but i want to disable the property Enable connection to IoT Hub to disable for every registered device. Is there any way to do this from the code. 回答1: You can use the REST API that allows to create or update enrollments (either group enrollments or single enrollments), in particular the provisioningStatus flag. (there is a similar API for individual enrollments). Next time your device tries to use DPS

问题 getConnectionState() as connected /disconnected depending on the device .if it is sending message i should see connected and if it not sending i should get disconnected .But each time i run the below java Program i am getting status as disconnected irrespective of device is sending messages or not RegistryManager registryManager = RegistryManager.createFromConnectionString(connectionString); System.out.println(registryManager.getDevices(new Integer(1000))); while(true){ ArrayList<Device>

问题 I'm using the Azure IoT Edge runtime running Linux containers on a Windows host OS. I have two modules, ModuleA and ModuleB. ModuleA have a registered direct method called "MethodA" and ModuleB have a registered direct method called "MethodB". When I invoke MethodA I want the method to invoke MethodB located in another module (but running in the same IoT Edge runtime). I'm using the Azure IoT SDK for c# and in the Init() function of ModuleA I have: await ioTHubModuleClient

问题 What is the format of the url needed to delete an already registered device in azure IoT hub using device provisioning service... I read this article but it throws me 404 https://docs.microsoft.com/en-us/rest/api/iot-dps/deletedeviceregistrationstate/deletedeviceregistrationstate In the request header I added If-Match tag but do I need to add Authorization tag with the SaS token and if I need the SaS token will be the one which I used for registering device using Device Provisioning Service

问题 Can anyone tell me how to parse this problem? I have an thrown error message that when i create azure cosmossDB, my cosmosDB output binding thrown message that IOTHubMessage.forEach is not a function; module.exports = function (context, IoTHubMessages) { context.log(`JavaScript eventhub trigger function called for message array: ${IoTHubMessages}`); var count = 0; var totalTemperature = 0.0; var totalHumidity = 0.0; var deviceId = "*****"; IoTHubMessages.forEach(message => { context.log(

问题 I am trying to generate a valid SAS token (shared access signatures) to connect to the Azure IoT Hub, but I keep getting the error Connection refused: Not authorized when using the token. I know the way I am connecting is working because when using a SAS token generated with the Microsoft Device Explorer (https://github.com/Azure/azure-iot-sdk-csharp/tree/master/tools/DeviceExplorer) it works as expected. To write the Javascript code I started from this documentation https://docs.microsoft

问题 I would like to obtain all devices into my Azure IoT Hub system (connected, not connected, it doesn't matter). I've read the documentation about the system itself with no result but Get a list of devices from Azure IoT Hub has become obsolete. Is there any kind of query which let retrieve all devices associated to my system? 回答1: You can use the REST API Service - Query Iot Hub Payload: { "query": "SELECT deviceId FROM devices" } 来源： https://stackoverflow.com/questions/56965855/get-all

问题 I used the python example from https://docs.microsoft.com/de-de/azure/iot-hub/quickstart-send-telemetry-python to send telemetry data to the IoTHub. Now I try to forward only the messages from the device "test-device" into a blob storage via a custom endpoint and a route. With the query string "true" all messages from all devices are pushed to the storage. However, I don't get the query to select only the messages from the deviceId "test-device". I search in the documentation but didn't find

问题 I have registered the devices in IoT and the client application (device) can read/update reported twin properties. The properties are the wollowing : "EbbyVersion": { "Major": 2, "Minor": 1, "Revision": 0 }, "Telemetry": { "CachingInterval": 60, "SendingInterval": 480, "UploadTimeout": 10 }, "Power": { "MaximumAvailable": 3500, "Thresholds": { "Low": 2500, "Medium": 3000, "High": 3500 } }, "Lighting": { "R": 32, "G": 64, "B": 128, "W": 255 }, I write the following code to connect to IoT