https://forge.codesys.com/forge/talk/Engineering/thread/0444ec3bd0/2020-02-27T13:49:50.353000ZRecent posts to Codesys versioning support2020-02-27T13:49:50.353000Z2020-02-27T13:49:50.353000Zlam.lehttps://forge.codesys.com/u/lam-le/https://forge.codesys.com63107bc63fcc52c2cfdcc9e2e80ddf17c88df801

<div class="markdown_content"><p>I figured out myself using a hidden parameter on every device descriptor for versioning check.</p></div>

2020-02-27T13:49:50.189000Z2020-02-27T13:49:50.189000Zlam.lehttps://forge.codesys.com/u/lam-le/https://forge.codesys.comdd08c8b6dfd5efd6ec10aa77c88ff298307f0e9b

<div class="markdown_content"><p>Hi all,<br/> I have written the driver for our HW by creating a devdesc and driver code following IoDrvVerySimple template. Our device driver does not use or create any library. Now I want to add versioning support for our driver but it seems codesys only support version check between libary and runtime system?</p> <p>After investigation, it seems the possible way is:<br/> 1. Create a new library.<br/> 2. Edit devdesc and set the library as requiredLib (eventhough they are not related).<br/> 3. Now there is constraint between devdesc and runtime system: devdesc -&gt; lib -&gt; runtime.</p> <p>Other way is to have a hidden version parameter in devdesc and check it in driver code. However, this does not prevent download if version does not match.</p> <p>Could anyone point out a correct way to implement version constraint for devdesc please. Thanks.</p></div>