I got it up and running today.
Please keep in mind, that since 1.6.12, you will not find the HID.cpp in your core folder and the script may not compile. As it is not searching for the HID.cpp in the core files, it will ignore the newly copied one.
I also received that 'JoyState_t' error message (and several others) ;-)
Solution:
Download a old version of arduino (I downloaded 1.6.0 as a zip), unpack it, follow the instructions and it should work.
Another reason for the 'joystate' may be a wrong controller board. Tried a 'nano', but I think it is not able to run that stuff.
Need to find a smaller ( than Leonardo) board to do that. :-)
N64 Usb Controller
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