Thank you again keija for you willingness to help with this CAN interface for the Arduino Due. Remember that the ARM Cortex M3 is different from the 8-bit/16-bit RISC architecture we are accustomed from Atmel and it confines any Due development to it. Right now I am finishing some CAN sample tests and minimizing/trimming all non-necesary drivers/services/components to make this project easier. Regards.