Writing an ethernet driver for TiM551 [closed]

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I found this driver for the TiM551

http://wiki.ros.org/sick_tim3xx

It worked really well, but I want to take advantage of the TiM551's IP67 rating, so I can't use the usb on the side. I'm new to writing drivers for devices and not particularly knowledgeable on networking. Is there a guide out there for me to follow? I've been studying up on the LMS1xx driver, but I don't know if its enough to help me write it.

I would imagine the first step is to use wireshark to understand how the message is formatted.

Thank you!