Questions about XCOS licensing and code generation

[Andrea.Amorosi76 at gmail.com]

Hi to all,
I have some questions regarding the license to use with XCOS models and 
generated C:
1) the C code generated from a XCOS model should be released with the 
same license?
2) what kind of license should be used if the XCOS model contains some 
models/palettes released under the GPL license?

Practically speaking I'm wondering if the code generated from an XCOS 
model can be used in project with non GPl licences.

Moreover I would like to have some hints on how to interface XCOS with a 
joystick and how to send data via UDP.

Thank you,
Andrea