https://sourceforge.net/p/raspivmc/blog/2014-05-06T08:58:15.186000ZRecent posts to blog2014-05-06T08:58:15.186000Z2014-05-06T08:58:15.186000Zjpcohttps://sourceforge.net/u/jpcoenen/https://sourceforge.netd6cafdf38db4a6d0fd6fde8efe1373502b7ef146

<div class="markdown_content"><p>Changes in the new release.</p> <p>Unrecognised frame use to crash the applications, in version 1. the unknown frames are simply discarded and the program goes on.</p></div>

2014-05-06T08:56:31.570000Z2014-05-06T08:56:31.570000Zjpcohttps://sourceforge.net/u/jpcoenen/https://sourceforge.net8f6a8b353a8da9815da3c1ea1045ee71d3e1f4e0

2013-10-22T21:29:08.168000Z2013-10-22T21:29:08.168000Zjpcohttps://sourceforge.net/u/jpcoenen/https://sourceforge.net4f779993ec9fd7f60e5c069be256cac40ae514cd

<div class="markdown_content"><p>The new (final ?) version of the frame receiver is now written, and should take care of all situations.</p> <p>Next is to complete the calls and processing of all frames defined the protocol.</p> <p>When coded and tested, a new version shall be issued.</p></div>

2013-10-22T15:30:44.204000Z2013-10-22T15:30:44.204000Zjpcohttps://sourceforge.net/u/jpcoenen/https://sourceforge.net8f4b06ece35c6fe3c9ad189ff5059b843c17434c

<div class="markdown_content"><p>My house is equipped with a Ventilation system, the system is controlled via my domotica system (KNX) through 2 switches (thus speed 1, 2 or 3).</p> <p>I discovered that the ventilation controller can do a lot more than this and can be connected via a serial line (RS232). Some setting being only available from the front panel (in the attic), noticeably the Absent mode that turns down the ventilation.</p> <p>This is the first attempt of interfacing the Ventilation controller onto a raspberry Pi.<br /> This version was intended to test the connection (RS232, Ethernet to RS232 ...) and to get a grasp of the protocol.</p> <p>The system works well on a Pi, PC Ubuntu and Apple OSX, interface is provided by means of a Web Page that displays an HTML canvas feeded with CGI running on the Pi connected to the ventilation unit.</p> <p>Incidentally, the Pi is also running an instance of linknx and eibnetmux (or eibd)</p> <p>It is now time to go back to the drawing board and clean it all up and write a proper communication stack.</p> <p>What is currently foreseen:</p> <ol> <li> <p>Configuration file driven</p> </li> <li> <p>Connectivity to the Ventilation:</p> <ul> <li>direct serial tty device (GPIO Raspberry or USB to serial converter)</li> <li>TCP/IP socket connection (for ethernet to serial converter such as <a href="http://www.shopwiznet.com/wiz110sr" rel="nofollow">Wiznet Serial to Ethernet</a> </li> </ul> </li> <li> <p>CGI modules</p> <ul> <li>reading values real time</li> <li>set values (eg. speed)</li> </ul> </li> <li> <p>Sampling jobs (monitoring).</p> <ul> <li>log file (text based).</li> <li>mysql storage.</li> <li>rrd.</li> <li>graphing interface (rrd, gnuplot).</li> <li>External system data feed (JSON, xml ...)</li> </ul> </li> <li> <p>portable device based application (Phone, Tablet ...)</p> </li> </ol></div>