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I've made some progress. I have standalone ftdi breakout board which i connected to two arduino pins (7&8). I then use the arduino to communicate with the car, it issues commands when it receives messages from my computer.
I have successfully extracted the iso initialization code, and it works, I get the appropriate bytes back from my car. I have tried to rip apart the iso_write_data function so that I can simply issue the hex codes, but it looks like the codes need to be wrapped in a packet with a header and so on. Is there more information on this?
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