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Title: kw1281 vs Can in Audi b7 Post by: Deko on July 22, 2015, 03:09:46 PM this has been bugging me for a while now.
when looking around on web, many say B7 and up do have CAN... but many pdf's list KWxxxx so, what exactly is correct with b7 2007? what I have I mind is that I'm playing around here with MCP chips and I'd like to get out some (as much as possible) data, but I also have in mind to maybe get something for writing data as well,like reprogramming in vcds. I know the MCP's are can, but is that ONLY for reading valuesnlike speed, rpm and such or are there more fun to do? I gueß the reprogramming goes over kw1281, which chips support that (preferably modules for USB / UART. grateful for any guidance / links with facts Title: Re: kw1281 vs Can in Audi b7 Post by: H2Deetoo on July 23, 2015, 04:24:22 AM KWP protocols are protocols on top of CANbus.
So if you use an MCP chip you can do low level canbus communications : send/receive 8 bytes What those 8 bytes mean is depending on the protocol you are using like KWP2000 or UDS or whatever. Regards, H2Deetoo Title: Re: kw1281 vs Can in Audi b7 Post by: Deko on July 23, 2015, 04:30:26 PM and as I've understood, KW initiation baud is like 5(ish?)
does the communication stay on that baud or does need to be increased after init ? Title: Re: kw1281 vs Can in Audi b7 Post by: H2Deetoo on July 24, 2015, 12:49:48 AM I guess you're now refering to K-Line instead of CAN
Title: Re: kw1281 vs Can in Audi b7 Post by: Deko on July 25, 2015, 02:39:28 AM thats correct, k-line
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