Sorry if my post is not for here, please move it.
I want to make a software to communicate with an ECU. I tried sending data to the USB, but I receive garbage data in return. The hardware I use is vector VN1600 which is connected to the USB and on the other way to a CAN box. It should be possible to communicate with any serial terminal, but its not. I think the problem comes from the VN1600, since I don't know anything about it. Can someone please give me a hint in the right direction and how to find where the problem is?