Some time ago there where a thread about the topic. Someone posted a network interface source file for the lpc17xx.
Did anyone get it up running? In case so what is the status? (No need to try the same if already done)
I don’t know what the status of that file is - but I have used the
LPC17xx MAC in other projects and it was relatively simple, so if
nothing else it will give you a starting point that can then just be
refined.