• usb_close() : easyusb.c , easyusb.h
• usb_connect() : easyusb.h , easyusb.c
• usb_disconnect() : easyusb.c , easyusb.h
• usb_init() : easyusb.h , easyusb.c
• usb_read() : easyusb.c , easyusb.h
• usb_reset() : easyusb.c , easyusb.h
• usb_write() : easyusb.h , easyusb.c