EIB / KNX - a short intruduction

“KNX is a standardised (EN 50090,ISO/IEC 14543), OSI-based network communications protocol for intelligent buildings. KNX is the successor to, and convergence of, three previous standards: the European Home Systems Protocol (EHS), BatiBUS, and the European Installation Bus (EIB). The KNX standard is administered by the Konnex Association.” – wikipedia

Now to the part involving linux

KNX/EIB isn't as open as they claim on http://konnex.org. It is open for those who are willing to join Konnex for a fee. (http://www.knx.org/knx-members/joining-fees/)

Anyway, there are also some (real) open projects licensed under GPL. One of them is eibd which gives you quite a bunch of functions for handling EIB/KNX.

• --enable-onlyeibd
• --enable-ft12
• --enable-pei16
• --enable-tpuart
• --enable-pei16s
• --enable-tpuarts
• --enable-eibnetip
• --enable-eibnetiptunnel
• --enable-eibnetipserver
• --enable-usb

1. install pthsem (/usr/lib)
   

   wget 'http://www.auto.tuwien.ac.at/~mkoegler/pth/pthsem-2.0.7.tar.gz'
   tar -zxf pthsem-2.0.7.tar.gz
   cd pthsem-2.0.7
   ./configure --with-prefix=/usr
   make && make install

2. install eibd (/usr/local/bin/), don't forget to enable the features you need
   

   wget 'http://www.auto.tuwien.ac.at/~mkoegler/eib/bcusdk_0.0.4.tar.gz'
   tar -zxf bcusdk_0.0.4.tar.gz
   cd bcusdk_0.0.4
   ./configure --enable-onlyeibd --enable--...
   make && make install

1. install layman

   emerge layman

2. add erazor-zone.de portage

   layman -a erazor -o ftp://scponly:scponly@erazor-zone.de/portage/layman.xml

3. add the overlay in make.conf

   echo 'PORTDIR_OVERLAY="$PORTDIR_OVERLAY /usr/portage/local/layman/erazor/"' >> /etc/make.conf

4. install eibd (it will also install pthsem)

   emerge eibd

• eibnetiptunnel
  include EIBnet/IP Tunneling client, supported by nearly all EIBnet/IP devices.
• eibnetip
  include EIBnet/IP Routing client. Not every KNX-IP device supports this protocol.
• ft12
  serial interface (BCU2)
• pei16
  serial interface support (BCU1 via kernel driver)
• pei16s
  serial interface support (BCU1 via normal serial driver), very,very experimental
• usb
  add support for USB based KNX interfaces to eibd and add usbutils
• tpuarts
  another serial interface (via normal serial driver)
• tpuart
  another serial interface (via kernel driver). Normal users should use tpuarts.
• eibnetipserver
  also provide KNX-IP services (act as EIBnet/IP server)
• groupcache
  store recent group-values
• python
  install python bindings
• tools
  install usermode utilities

I'm using a SIEMENS Gamma 146 IP-Router for the access (IP multicast via 224.0.23.12)

eibd -i ip:224.0.23.12

grouplisten ip:127.0.0.1 1/1/3

groupsocketlisten ip:127.0.0.1

groupswrite ip:127.0.0.1 1/1/1 1

• BCU SDK (contains eibd)
• Datapoint types (usefull for converting RAW values)