usb on at81c5131a

can you tell me what have you used for USB drivers? are u using drivers from atmel or custom designed.. Also give me the link to software windrive which you said you have used..

here is the link for usb code:
http://www.efo.ru/ftp/pub/atmel/_C51_and_AVR_with_USB/
i used c5131A-usb-hid-generic_fw.

it is very hard to understand but very easy to program
read and edit the user_application.c.

i used atmel's mcu that have usb driver inside

hmm.. i am consulting a book now.. USB Complete.. hope it will be helpful for me anything useful i will add on the website.. I am going to use a PIC.

pic is great and much easy to use then mcu.
good luck!

Thank you.. still reading about PIC.. s lot more to learn