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Questions tagged [cumulocity]

Cumulocity is a proprietary, cloud-based Internet of Things (IoT) applications development platform.

Cumulocity is a proprietary, cloud-based Internet of Things (IoT) applications development platform with REST APIs to connect IoT devices. For connecting devices, many embedded environments using , , , , and others are supported.

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How to get supported measurements of a device in Cumulocity?

When using a simulated device you can get its supported measurements (i.e. fragmentTypes) from the "c8y_SupportedMeasurements" field which for example for a temperature sensor looks as follows: c8y_SupportedMeasurements:…
severi
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Invoking reports from REST API

The built-in Cockpit application provides an interface for creating Reports for exporting data such as measurements and alarms. Is there a way to hook up a scheduled task such as an AWS Lambda cron/scheduled task to execute the report? Can the…
Lou O.
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Cumulocity: Advanced Threshold Alerts

Our devices will report measurements based on a value that has a target that will vary per site for example: Site A - Measurement X Target Value = 20 Site B - Measurement X Target Value = 22 Site C - Measurement X Target Value = 25 I would like to…
Lou O.
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Measurements by Journey - Data structure

I would like to be able to modelize OBD devices measurements (gps data, speed) and events (hard acceleration, deceleration, violent turn, ...) by journey. It's important to be able to retrieve this measurements/events or compute aggregation by…
Thomas Lallement
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Not able to use c8y.ui functionality on top of cumulocity's hello-core-api example application

I'm trying to use functionality provided c8y.ui module (http://resources.cumulocity.com/documentation/jssdk/latest/#/core/c8y.ui) in an application I'm building on top of Cumulocity's hello-core-api application…
severi
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Is it possible to import a "data points graph" widget from a file into dashboard?

I'm using Cumulocity dashboards to visually analyze measurement data from sensor nodes, using "data points graph" widgets. Manually creating the widgets is a tedious and time consuming job. Is it possible to create a CSV (or similar) file for…
Olaf Peters
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Get the latest events of a specific type from a specific device

Is there a way to get the latest event of a specific type from a specific device? So far I queried all events via myURL/event/events?source=<>&type=<>. Or is there a way to get a collection of events ordered by their creationTime? This…
d4rty
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Cumulocity - How to clear Events for a specific device via REST?

How can I clear/delete all events for a specific device and a specific event type? I tried the a DELETE .../event/events?source=123456&type=c8y_LocationUpdate but this doesn't work.
d4rty
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Multiple managed object in one Scada widget

I would like to present some devices with their measurements on one single SVG file to show a graphical view of a room. But from what I see, we can't link the properties of multiples devices to one SCADA widget. It seems a bit limited but maybe I…
Thomas Lallement
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Show specific properties in Select properties dialog

I would like to show the opened doors of a bay visualy in a SCADA widget. So I would like to get OPEN / CLOSED state from the last triggered event, but it's not possible to select a property of an event in the "Select properties" dialog. So I can…
Thomas Lallement
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Is it possible to lose events when using long-polling to retrieve real time notifications?

When subscribing to real-time notifications, I go through the normal handshake, subscribe, connect flow. Once the connection returns with events, I reconnect and wait for the next response to return. My question is: If events are generated the…
Davis Kirkendall
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Forwarding data from SigFox to Cumulocity

Currently we are trying to forward data from SigFox device to cumulocity by configuring a Callback from the SigFox admin panel but we always receive a 400 – Bad Request HTTP response. If I change the URL to forward on requestBin, there is no…
Thomas Lallement
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Realtime Notification Device status / Cumulocity Java Client

how I can locate the status of devices via Java API ? at first, the current status Then when something on status changes anything! Example diconnected Thanks
user1881745
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Event Processing - Module channel

Could you explain what is the usage of Modules with select query? For example if I write (as shown on this page https://cumulocity.com/guides/users-guide/administration/): select * from MeasurementCreated Is it useful to get real time notifications…
Thomas Lallement
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Java Client extracting from Measurements

How can I extract from Measurements like c8y_MotionMeasurement c8y_AnalogMeasurement c8y_SignalStrength the attributes with Java Client? Example for c8y_MotionMeasurement content: "c8y_MotionMeasurement":{ "x":{ "unit":"m/s^2", …
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