Lonworks for Linux
The open source community and I have written various parts of the Echelon Lonworks protocol
stack that work on Linux.
The ANSI/EIA-709.1 document describes the Lonworks protocol.
Chip manufactures provide some data sheets documenting protocol:
Hardware Interface and Linux kernel driver modules
Gesytec Provides various interfaces, and Linux Support drivers! I have had a lot of success
with the PCI interface boards with MIP firmware.
I have created a GIT based repoitory at lon4linux git hub. Patches or pull requests welcome. I'm
willing to work on this code, or modify it to your needs on a contract basis.