FIXED: - added CALLBACK to can callback function prototypes
FIXED: - added CALLBACK to can callback function prototypes

mhaberler/Canfestival-3,mhaberler/Canfestival-3,mhaberler/Canfestival-3,mhaberler/Canfestival-3,mhaberler/Canfestival-3,mhaberler/Canfestival-3