Hi Marco,
I think that you included the file without mentioning the directory. for eg: #include "Nwl.h" will not work. You have to add
#include "nwl/Nwl.h".
Please find attached a demo example of ieee802154 application.
You should put the unzipped directory inside ee/examples/pic30/
Then you can create a new ieee80154 project from the RT-Druid templates in eclipse.
Also remember to change the device type inside the conf.oil.
Use CFLAGS = "-DDEVICE_TYPE_COORDINATOR"; for the coordinator,
CFLAGS = "-DDEVICE_TYPE_END_DEVICE"; for the end device.
If the problem persists send us the compilation error.
Regards
Mangesh.