I've been looking for a "Modbus TCP" implementation inside an application working with BF537 + VDK + lwIP.
I found http://www.freemodbus.org/index.php that seems exactly what I need. They say this library support a generic lwIP port.
Has anybody successfully tried this library with Blackfin processors?
Or is there an easier approach than can be used to implement "Modbus TCP" on Blackfin?
Unfortunately I do not know of anyone using or implementing Modbus TCP on Blackfin. Perhaps if someone else does they can post a follow-up to this message.
Your thought process sounds right here, as Blackfin's lwIP is essentially the generic lwIP port. From the overview I read on the freemodbus.org site a porting effort to Blackfin sounds straightforward, but the devil can be in the details.