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Updated udev rules to reflect the new udevadm command.

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Tom Keffer
2011-01-05 23:43:06 +00:00
parent ae92fdff28
commit 053dcbeca4
1 changed files with 9 additions and 4 deletions
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docs/readme.htm
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@@ -1053,7 +1053,7 @@ as well. You just specify port <span class="code">/dev/vpro</span> and be done w
<p>I have installed a file <span class="code">/etc/udev/rules.d/66-vpro.rules</span>
on my fit-PC that looks like this:</p>
<pre># Automount the VantagePro2 to port /dev/vpro.</pre>
<pre># Install in /dev/udev/rules.d/66-vpro.rules</pre>
<pre># Install in /etc/udev/rules.d/66-vpro.rules</pre>
<pre>#</pre>
<pre>ACTION==&quot;add&quot;, ATTRS{interface}==&quot;CP2102 USB to UART Bridge Controller&quot;, SYMLINK+=&quot;vpro&quot;</pre>
<p>What this rule says is that when the USB port is plugged in (action
@@ -1064,12 +1064,17 @@ to <span class="code">/dev/vpro</span>. </p>
<p>Your controller may have a different identifier!! I can recommend this
article, &quot;<a href="http://www.reactivated.net/writing_udev_rules.html"><em>Writing
udev rules</em></a><span class="style1">,</span>&quot; for how to find and write an
appropriate <span class="code">udev</span> rule for your controller. In
appropriate <span class="code">udev</span> rule for your controller. (Note,
however, that this article uses the old <span class="code">udevinfo</span>
command, rather than the newer <span class="code">udevadm</span> command.) In
particular, run the command</p>
<pre># udevinfo -a -p $(udevinfo -q path -n /dev/ttyUSB0)</pre>
<pre># udevadm info --attribute-walk --path $(udevadm info --query=path --name=/dev/ttyUSB0) </pre>
<p>where<span class="code"> /dev/ttyUSB0</span> is the port (substitute your
real USB port) the VP2 is attached to. It will print out various identifiers
that can be useful in identifying your VP2 to <span class="code">udev</span>.</p>
that can be useful in identifying your VP2 to <span class="code">udev</span>.
While the example script above used a rule that matched attribute
<span class="code">interface</span>, others are possible. For example, you might
chose to match the attribute <span class="code">product</span>.</p>
<p>Once you&#39;ve installed your <span class="code">udev</span> rule, you can then
set <span class="code">port=/dev/vpro</span> in <span class="code">weewx.conf</span>,
confident that it will always point to your VantagePro2, no matter which USB