Vauxhall\Opel\Holden Canbus Info Request
I'm starting a project with my dad to try and interface my CarPC with the steering wheel controls and output information to the radio section of the OEM display.
I've got a 2003 model Vauxhall Signum with the 6 button steering wheel controls, which means it's half-can, but what exactly does this mean/relate to?!
The OEM display is the yellow/black dot matrix display, is that the GID or TID?
My dad programs micro-controllers so he will be making the interface for me.
What I'm looking to achieve is to read the steering wheel controls from the CAN to control the CarPC, and to display music information and navigation commands in the top section of the display that normally displays the radio station name/ CD track info from the OEM stereo.
Has anyone got any resource information that can help?
I've also read about the GMLAN protocol, does the Vectra/Signum use this for the stereo side of the CAN?
Any help would be gratefully recieved. I'll be producing a worklog throughout the project to hopefully enable this for other members in the future.