struct usb_endpoint_descriptor *usbd_device_endpoint_descriptor (struct usb_device_instance *, int, int, int, int, int);
int usbd_device_endpoint_transfersize (struct usb_device_instance *, int, int, int, int, int);
struct usb_string_descriptor *usbd_get_string (u8);
struct usb_endpoint_descriptor *usbd_device_endpoint_descriptor (struct usb_device_instance *, int, int, int, int, int);
int usbd_device_endpoint_transfersize (struct usb_device_instance *, int, int, int, int, int);
struct usb_string_descriptor *usbd_get_string (u8);