Hello, Thank you for your responding...
The wixel works now. I have another question: I tried to compile the wixel-sdk folder and I got the following error:
libraries/src/usb/usb.c:292: error 146: two or more storage classes in declaration for 'usbStandardDeviceRequestHandler'
make: *** [libraries/src/usb/usb.rel] Error 1
I didn't change the code so I would like to know is there any problems related to the SDCC or GCC versions!