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Yannick Schaus 0965e5ec24 Revert "Clean up the master branch" 
This reverts commit bad6b47ef9.

Signed-off-by: Yannick Schaus <habpanel@schaus.net>
 		2018-06-14 16:43:24 +02:00
..
readme.html Revert "Clean up the master branch" 2018-06-14 16:43:24 +02:00

readme.html

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      <!-- Attention authors: Do not edit directly. Please add your changes to the appropriate source repository -->

<h1 id="serial-binding">Serial Binding</h1>

<p>The Serial binding allows openHAB to communicate in ASCII over serial ports attached to the openHAB server.</p>

<table>
  <thead>
    <tr>
      <th>Item Type</th>
      <th>Function</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>Switch</td>
      <td>the item will update its state to <code class="highlighter-rouge">ON</code> or <code class="highlighter-rouge">OFF</code> whenever data becomes available on the serial interface (or simply by short-cutting pins 2 and 7 on the RS-232 interface)</td>
    </tr>
    <tr>
      <td>String</td>
      <td>the item will update its state to a string that is the data received from the serial interface.  Sending a command to the String item will be sent out as data through the serial interface.</td>
    </tr>
    <tr>
      <td>Number</td>
      <td>the item will receive the RegEx result and attempt to convert the string to a number.</td>
    </tr>
  </tbody>
</table>

<h2 id="port-configuration-notes">Port Configuration Notes</h2>

<p>In most cases you will not need to perform special steps to access your serial ports, but these notes might be helpful.</p>

<h3 id="linux-users">Linux Users</h3>

<ul>
  <li>If you are using <strong>non standard serial ports</strong> you have to adapt start.sh to have the serial port included. The <code class="highlighter-rouge">java</code> command line should then include the following parameters:</li>
</ul>

<div class="highlighter-rouge"><div class="highlight"><pre class="highlight"><code>-Dgnu.io.rxtx.SerialPorts=/dev/ttyAMA0
</code></pre></div></div>

<p>where <code class="highlighter-rouge">/dev/ttyAMA0</code> is the path to your serial port. Please be aware to change all scripts you might use for startup (debug, automatic start in Linux, etc.).</p>

<ul>
  <li>Your Linux distro might require that you add the <code class="highlighter-rouge">openhab</code> user to the <code class="highlighter-rouge">dialout</code> group to grant permission to read/write to the serial port.</li>
</ul>

<div class="highlighter-rouge"><div class="highlight"><pre class="highlight"><code>sudo usermod -a -G dialout openhab
</code></pre></div></div>

<p>The user will need to logout from all login instances and log back in to see their new group added.  If you add your user to this group and still cannot get permission, rebooting the box to ensure the new group permission is attached to your user is suggested.</p>

<ul>
  <li>If you use more than one USB serial converter like FTDI or CP2102, it may happen that your /dev/ttyUSB0 device is named /dev/ttyUSB1 after a reboot. To prevent this problem you can assign alias names for your serial devices by adding them to <code class="highlighter-rouge">/etc/udev/rules.d/99-com.rules</code>.</li>
</ul>

<p>example:</p>

<div class="highlighter-rouge"><div class="highlight"><pre class="highlight"><code>SUBSYSTEM=="tty", ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6001", ATTRS{serial}=="AE01F0PD", SYMLINK+="ttyMySensors"
SUBSYSTEM=="tty", ATTRS{idVendor}=="10c4", ATTRS{idProduct}=="ea60", ATTRS{serial}=="0001", SYMLINK+="ttyCulStick"
</code></pre></div></div>

<h3 id="mac-users">Mac Users</h3>

<p>If you are working with a Mac, you might need to install a driver for your USB-RS232 converter (e.g. <a href="http://osx-pl2303.sourceforge.net/">osx-pl2303</a> or <a href="http://mac.softpedia.com/get/Drivers/PL2303-OS-X-driver.shtml">pl2303</a>) and create the /var/lock folder, see the <a href="http://rxtx.qbang.org/wiki/index.php/Trouble_shooting#Mac_OS_X_users">rxtx troubleshooting guide</a>.</p>

<h2 id="binding-configuration">Binding Configuration</h2>

<p>This binding does not have a configuration.</p>

<h2 id="item-configuration">Item Configuration</h2>

<p>The format has the following variations:</p>

<div class="highlighter-rouge"><div class="highlight"><pre class="highlight"><code>serial="&lt;port&gt;@&lt;baudrate&gt;" 
serial="&lt;port&gt;@&lt;baudrate&gt;,REGEX(&lt;regular expression&gt;)" 
serial="&lt;port&gt;@&lt;baudrate&gt;,BASE64 
serial="&lt;port&gt;@&lt;baudrate&gt;,ON(&lt;On string&gt;),OFF(&lt;Off string&gt;)" 
serial="&lt;port&gt;@&lt;baudrate&gt;,REGEX(&lt;regular expression&gt;), UP(&lt;Up string&gt;),DOWN(&lt;Down string&gt;), STOP(&lt;Stop string&gt;)" 
</code></pre></div></div>

<p>where:</p>

<ul>
  <li><code class="highlighter-rouge">&lt;port&gt;</code> is the identification of the serial port on the host system, e.g. <code class="highlighter-rouge">COM1</code> on Windows, <code class="highlighter-rouge">/dev/ttyS0</code> on Linux or <code class="highlighter-rouge">/dev/tty.PL2303-0000103D</code> on Mac.  The same <code class="highlighter-rouge">&lt;port&gt;</code> can be bound to multiple items.</li>
  <li><code class="highlighter-rouge">&lt;baudrate&gt;</code> is the baud rate of the port. Backward compatibility is given; if no baud rate is specified  the serial binding defaults to 9600 baud.</li>
  <li><code class="highlighter-rouge">REGEX(&lt;regular expression&gt;)</code> allows parsing for special strings or numbers in the serial stream. You can use a capture group (e.g. REGEX(Position:([0-9.]*)) to capture 12 in “Position:12” or substitution (e.g. REGEX(s/Position:100/ON/) or REGEX(s/Position:100/ON/g)) to replace (FIRST or ALL) “Position:100” strings in response with “ON”. This is based on the <a href="https://github.com/openhab/openhab1-addons/wiki/Transformations#regex-transformation-service">RegEx Service</a> and <a href="https://github.com/eclipse/smarthome/tree/master/extensions/transform/org.eclipse.smarthome.transform.regex">ESH RegExTransformationService</a>. This is optional.</li>
  <li><code class="highlighter-rouge">BASE64</code> enables the Base64 mode. With this mode all data received on the serial port is saved in Base64 format. In this mode also all data that is sent to the serial port has to be Base64 encoded. (This was implemented because some serial devices are using bytes that are not supported by the REST interface).</li>
  <li><code class="highlighter-rouge">ON(&lt;On string&gt;),OFF(&lt;Off string&gt;)</code> if used in conjunction with a Switch this mapping will send specific commands to serial port and also match a serial command to specific ON/OFF state. This way you don’t have to use a rule to send a command to serial</li>
  <li><code class="highlighter-rouge">UP(&lt;Up string&gt;),DOWN(&lt;Down string&gt;),STOP(&lt;Stop string&gt;)</code> if used in conjunction with a Rollershutter this mapping will send specific commands to serial port. Use REGEX to parse Rollershutter postion (0-100%) comming as feedback over serial link</li>
</ul>

<p>Base64 can be decoded in the rules by importing <code class="highlighter-rouge">javax.xml.bind.DatatypeConverter</code> and then decoding the value like this:</p>

<div class="highlighter-rouge"><div class="highlight"><pre class="highlight"><code>DatatypeConverter::parseBase64Binary(ITEM.state.toString)
</code></pre></div></div>

<p>For encoding use the <code class="highlighter-rouge">printBase64Binary</code> method of the <code class="highlighter-rouge">DatatypeConverter</code>. This is optional.</p>

<p>As a result, your lines in the items file might look like these:</p>

<div class="highlighter-rouge"><div class="highlight"><pre class="highlight"><code>Switch         HardwareButton     "Bell"              (Entrance)      { serial="/dev/ttyS0" }
String         AVR                "Surround System"   (Multimedia)    { serial="/dev/ttyS1@115200" } 
Number         Temperature        "My Temp. Sensor"   (Weather)       { serial="/dev/ttyS1@115200,REGEX(ID:2.*,T:([0-9.]*))" } 
Switch         SerialRelay        "Relay Q1"          (Entrance)      { serial="/dev/ttyS0,ON(Q1_ON\n),OFF(Q1_OFF\n)" }
Rollershutter  SerialRollo        "Entrance Rollo"    (Entrance)      { serial="/dev/ttyS0,REGEX(Position:([0-9.]*)),UP(Rollo_UP\n),DOWN(Rollo_Down\n),STOP(Rollo_Stop\n)" }
Switch         RoloAt100          "Rolo at 100"       (Entrance)      { serial="/dev/ttyS0,REGEX(s/Position:100/ON/)" }
</code></pre></div></div>

    </div>
  </div>
</section>






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