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RIO Developer Essentials Guide for Academia

"JSON" tag

LabVIEW RT icon and globe icon

RT networking: Web services
RT guide

Use the infrastructure of the Web for machine-to-machine exchange of information.

Globe and telephone handset icons

Web services: calling a Web service technical principles
RT guide

Learn the technical principles necessary to create VIs that can call Web services which return information in the form of JSON strings.

LabVIEW RT block diagram snippet: Call an API and parse the returned JSON string

Call a Web service
RT code

Form a query string as a URL, retrieve the JSON string served by the Web service, and parse the JSON string to extract useful information.

Globe and home icons

Web services: hosting a Web service technical principles
RT guide

Learn the technical principles necessary to host a Web service on the Academic RIO Device. Remote clients such as another LabVIEW-based target, an IoT device, or a conventional browser can retrieve sensor measurements and control indicators and actuators using commands obtained from the remote client's request query string.

LabVIEW RT block diagram snippet: Control onboard LEDs from web form data, return system date/time

Host a Web service
RT code

Host a web service on the Academic RIO Device to serve the states of onboard sensors (pushbutton and accelerometer) and system information (date, time, host name, and IP address), and to control the onboard LEDs based on a user-selected LED hex code.