I've only been playing with WinAVR for a few days with this little project
I'm using their makefile.
The problem is when I try to modify a line in usbdrv.h in PN2 , I'm only trying to change the port pin where the USB data comes in.
When I do "make clean" then "make all" the hex files are identical, so the mods I did to the usbdrv.h file are not being re-compiled. Any changes in main.c work fine
I've done the obvious "makefile 101" on google, but I'm still lost, (but I'm very happy that I've got this far)
thanks
martin