NOTICE: The Processors Wiki will End-of-Life in December of 2020. It is recommended to download any files or other content you may need that are hosted on processors.wiki.ti.com. The site is now set to read only.

GUI Composer/Debugger Refresh Rate

From Texas Instruments Wiki
Jump to: navigation, search

Controlling the refresh rate of a GUI Composer application

When the target is running, all variables that have widgets bound to them are read every second. The application may want to increase or decrease that rate based on its needs. For example with slow communication to the target and a lot of data to be transfer, the rate should be decreased. When faster feedback is needed and the data can be handled properly, the rate can be increased. It any case, making the rate faster that 200 milliseconds is not recommended. To set the refresh rate to 2 seconds an entry can be added to the application's app.json file.

<syntaxhighlight lang=Javascript>

{

    "serverBindName": "$refresh_interval",
    "options": {
        "dataType": "Long",
        "defaultValue" : "2000"
    }

},

</syntaxhighlight>

Alternatively, a widget that controls the rate can be bind to $refresh_interval.The binding is bidirectional.

In rare cases GUI Composer can remove that record when the user edits the application’s HTML file. Make sure the binding exist in app.json when the application is completed.