Code for serial input

I'm totally lost here. I want to read the serial data coming in from a decoder chip. I know what the proto call is (ISO-9141) but have no idea where to start for code. I've searched here and the internet but just can't seem to find anything. Any help would be appreciated.

Greg

Start by posting a link to the datasheet for the decoder chip so people here know what you are talking about.

If you have written any code yourself, post it here. Use code tags (the # button) so it looks like this

...R

LanduytG:
I know what the proto call is (ISO-9141) but have no idea where to start for code. I've searched here and the internet but just can't seem to find anything.

Since that is the protocol used by OBD-II you might search for an Arduino OBD Scanner to use as an example.