CAN bus

[thefloyd]

I'm undertaking a new project and I'm diving into some things I'm a bit green at. Some pointers/advice would be much appreciated..

I'm attempting to build a bridge from my vehicle's steering wheel controls to an iPod, as the car never had the option. This is a late model GM car, and as such I already know the steering wheel controls and some of the other things I may be interested in are on a low speed single wire CAN bus (speaking GMLan). I'm pretty sure I know enough about the protocol and what I'll see on the wire to make that bit work. I've also already been addressing an iPod over the 19.2k serial interface, so I've got THAT bit down.

What I'm unclear on is how to initialize and listen/speak CAN using CCS. I plan on using the TH8056 (melexis) external transceiver as that's already certified to work with GMLan setups. Any pointers/code snippets on how I can initialize the microcontroller's CAN interface at 33k (low speed CAN) and read/write from/to the bus? I explored using something like an ELM327 and speaking RS232 to CAN, but that seems silly given many PICs have a built in CAN module. A whole pile of parts (including a couple of different PICs with hardware CAN bus) will be arriving tomorrow so I'd love to try and tackle this over the weekend. Any pointers would be sincerely appreciated.

Thanks!

[thefloyd]

Never mind.. I think I may have found what I was looking for in the examples and using the CAN configuration tool built into the PIC wizard, including the custom baud rate!

[Humberto]

thefloyd wrote: