Anyone worked with the LIN interface/protocol?

[Steven Bishop]

This is my first post in the forums.  I've been avidly reading the posts here for a few months now and look forward to the day I can contribute.  Meanwhile, I'm seeking some additional knowledge from all you experts out there.

I've completed the design concept for a series of test systems that includes a LIN interface.  Currently, I've selected a PXI board from Goepel.  You'll find Goepel's 3072 listed here on NI's website.  I am looking at the 3080 which is a combo CAN/LIN interface.  It comes with LabView support.  I've also found a LIN interface from Pickering.  I've also found circuitry to bridge RS232 to LIN, but this is only a physical layer conversion.  I'd end up developing the whole protocol if I went that route.

My question is this.  Are there alternatives that anyone is aware of?  It seems such overkill to drop a $2500 board in the system just for a simple protocol conversion.  Seems like someone out there would have dealt with this...

Thanks in advance,

_________________

Steve Bishop
Project Group Lead/Sr. Test Engineer
Kimball Electronics Group
Jasper, IN  47549
steven.bishop@kimball.com

_________________

[unclebump]

Have you seen any of this?

http://www.google.com/search?q=LIN+protocol+labview&hl=en&lr=&start=10&sa=N

http://www.siliconengines-ltd.com/products/lin-232.html

http://www.dgtech.com/prod-list.php

Another interesting link.

http://www.intrepidcs.com/neoVIpro/index.htm

Message Edited by unclebump on 08-04-2005 09:04 AM

[unclebump]

http://www.computer-solutions.co.uk/gendev/lin.htm

http://www.nex.de/  This one looks pretty good.

http://www.kopfweb.de/Downloads/Prospekt%20LINTool%20V1.0.pdf

http://www.accutest.co.uk/contentPages/Products/CanboardXL.htm

Message Edited by unclebump on 08-04-2005 09:20 AM

[Steven Bishop]

Thanks a lot!  You clearly put a lot of time and energy into this.  A lot of what you identified I had seen already.  BUT, there was some really good new stuff.  I'm still digesting the links and resulting info. I'll report back later.

[+919886512765]

Hi techie's,

   I have some doubt's on LIN.

1.   Master Node has sent a header for which two nodes have responded simultaneously. So there is a collision. Now master resolves this by giving priority to one of the nodes by sending unconditional frames individually to the nodes.

Doubt is when there a collision how slaves stop behave? As per slave state machine there is a read back and so one of the node should pull back the transmission. Then what about the other node which has succeeded in transmission?

 If error is handled in a master how this works… how above error is handled?

How synchronization works?

How slave decides the identifier after getting synchronized with master? Mainly how without a clock only with Tbit period that it has got from sync?

[sarahk]

I don't really know much about LIN, but Wikipedia has an entry that might prove useful. (There are also links at the bottom that could be helpful.)

Good luck!

[+919886512765]

thanks Sarah... got some info... will try...

if you get any info related to my query please post it....

regards

ganesha