Postman is a program that allows the user to interact with HTTP APIs. When used with Just Add Power, it can send POST and GET requests and display the responses.
It is a useful tool when troubleshooting or testing how a control system interacts with Just Add Power's justOS RESTful API.
Full information on justOS API is available at https://justaddpower.docs.stoplight.io
Postman can be downloaded from the main Postman website at www.getpostman.com.
justOS B1.2.1 or later required
When first opening Postman, the Launchpad screen will appear. Select Create a request to open a new tab.
Navigate to the Untitled Request tab. There are 3 key parts to this window:
To retrieve information from the Just Add Power device, use the GET function. Full list of GET functions is available at https://justaddpower.docs.stoplight.io. Example below returns all Settings on a device.
To execute live commands or change boot-up settings on a Just Add Power device, use the POST function and execute the command in the Body in JSON format. Full list of POST functions is available at https://justaddpower.docs.stoplight.io.
The example below shows how to set a Receiver to show the top-left corner of a 2x2 video wall by sending