Hello, =20 I have got the PICDEM FS USB Demo board and I have looked at the file usb= ctrltrf.c from the Demo project. I am trying to understand these function= s. And for the function USBCtrlTrfRxService() I've seen this sentence in = comment : "This routine is only partially complete. Check for new version= of the firmware."=20 So, does it function correctly? Or do I have to recover a new version? In this case where can I find it? =20 =20 I have also an other problem with the configuration of my PIC: I had got = an error of descriptor message just after the installation when I wanted = to pass from the demo mode to the bootload mode. Does somebody have an id= ea of the reason? =20 regards, PiR =09 --------------------------------- Appel audio GRATUIT partout dans le monde avec le nouveau Yahoo! Messeng= er T=E9l=E9chargez le ici ! =20 --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist