USB Stack for LPC1343
open source / free USB stacks for the LPC1343


The CCC R0ket has open source firmware. The included USB CDC stack looks a lot like a full blown USB stack with HID support. Note that this stack is not used in the default build - it uses ROM code for USB. 

I've seen this stack (or very similar variants) for NXP µCs elswhere on the web, including HID example code.