add I2C Bus binding

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1. Feature Description
Add an I2C-Bus binding (similar to OneWire)

2. Example Use Case
Control existing i2c sensors/actors, way more devices support I2C than OneWire

Original issue reported on code.google.com by cbb7...@gmail.com on 22 Dec 2012 at 4:12

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Hello,

I'm also very interested in an i2c binding for openhab.
I've found some probably helpful code here: 
http://www.horter.de/i2c/i2c-beispiele/beisp_java_1.html

best regards

Marko

Original comment by marko.ka...@gmx.de on 25 Dec 2012 at 1:58

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Hi

i2c will give openhab more power, specially when it comes to power line 
communication based home automation, was it open standard or proprietary

so Amen to that !

Meshx86

Original comment by mohs...@gmail.com on 8 Mar 2013 at 5:50

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unassigned to make current state more transparent

Original comment by teichsta on 21 May 2013 at 9:17

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Original comment by kai.openhab on 22 May 2013 at 8:13

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Original comment by teichsta on 23 May 2013 at 3:49

• Changed state: Accepted

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I2C is just a synchronous serial communication protocol, which it self does not 
specify any device support. Device interface is manufacture specific (e.g. 
register structure), so it's pretty difficult to implement generic i2c binding. 
Well it's easy to implement binding which can be used to read/write bytes from 
i2c device, but it's not very user friendly.

Probably most users which need i2c support will run OpenHAB on raspberry pi and 
Linux.

Linux kernel have very good i2c support. Kernel support huge amount of 
different i2c devices already, so If OpenHAB is running on linux and e.g. 
raspberry pi, i2c devices can be access via command  line using exec binding:

1) directly via /sys/class/...
2) using i2c-tools
3) using python, etc ...

My 2 cents
Pali

Original comment by pauli.an...@gmail.com on 27 May 2013 at 6:29

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Original comment by teichsta on 5 Nov 2013 at 10:47

• Added labels: To-Github

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This issue has been migrated to Github. If this issue id is greater than103 its 
id has been preserved on Github. You can open your issue by calling the URL 
https://github.com/openhab/openhab/issues/<issueid>. Issues with ids less or 
equal 103 new ids were created.

Original comment by teichsta on 17 Nov 2013 at 8:08

• Added labels: Migrated-To-Github

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see above!

Issue has been migrated to Github and should be discussed there.

Original comment by teichsta on 21 Nov 2013 at 1:51

• Changed state: Invalid