https://forge.codesys.com/forge/talk/Runtime/thread/b2fc60f6c6/2026-10-16T22:59:44.320000ZRecent posts to Raspberry Pi Runtime 4.22.0.0 vs. 4.20.0.0 I2C Bus not running...2026-10-16T22:59:44.320000Z2026-10-16T22:59:44.320000Zeschwellingerhttps://forge.codesys.com/u/eschwellinger/https://forge.codesys.com3eeb109524bcb62f4a3d064ee83a2d8bc9f6beb5

<div class="markdown_content"><p>sorry, yes stars needed</p></div>

2026-10-15T21:00:19.665000Z2026-10-15T21:00:19.665000Zwollviehhttps://forge.codesys.com/u/wollvieh/https://forge.codesys.comb639de8ce4601f08031b835e739faf2ef34bc4b4

<div class="markdown_content"><p>... the stars needed?</p> <div class="codehilite"><pre><span></span><code><span class="k">[CmpCharDevice]</span> <span class="na">PermittedPath.0</span><span class="o">=</span><span class="s">/dev/i2c*</span> <span class="na">PermittedPath.1</span><span class="o">=</span><span class="s">/dev/spidev0.0</span> <span class="na">PermittedPath.2</span><span class="o">=</span><span class="s">/sys/class/gpio/*</span> <span class="na">PermittedPath.3</span><span class="o">=</span><span class="s">/dev/gpiochip*</span> </code></pre></div> </div>

2026-10-15T20:06:08.449000Z2026-10-15T20:06:08.449000Zeschwellingerhttps://forge.codesys.com/u/eschwellinger/https://forge.codesys.com0d3417608a08a11660f05de2115529b334bce4b1

<div class="markdown_content"><p>CODESYSControl_User.cfg <br/> <span>[CmpCharDevice]</span><br/> PermittedPath.0=/dev/i2c<br/> PermittedPath.1=/dev/spidev<br/> PermittedPath.2=/sys/class/gpio/<br/> PermittedPath.3=/dev/gpiochipPerm</p></div>

2026-10-15T18:15:36.326000Z2026-10-15T18:15:36.326000Zwollviehhttps://forge.codesys.com/u/wollvieh/https://forge.codesys.com3a6a6e2082ed553778f4c45f82cc7c432dce9a9a

<div class="markdown_content"><p>Hi together, </p> <p>-&gt; I updated my raspberry pi3 with runtime 4.22.0.0, and then no I2C device is running.<br/> -&gt; when i switch back to runtime 4.20.0.0 all I2C devices running.</p> <p>what have i additionally to do, so that I2C Bus is although running in the newest Runtime Version 4.22.0.0 ?</p> <p>I did read something about security changes on the new runtime Version, but i do not clear<br/> understand, what i have do do, do bring the I2C Bus to live again ?</p> <p>... there should be a Dialog in the Runtime Deploy tool, (see the link below) , but im my <br/> Codesys Version 3.5.22.40 i could not find this "Change Service User button" ...</p> <p><a href="https://content.helpme-codesys.com/en/CODESYS%20Control/_rtsl_linux_dedicated_user.html" rel="nofollow">https://content.helpme-codesys.com/en/CODESYS%20Control/_rtsl_linux_dedicated_user.html</a></p> <p>strange things happen, so what to do, any Ideas appreciated !</p></div>