usb_queue_head_t* usb_queue_head( const uint_fast8_t endpoint_address, const usb_device_t* const device ) { return &usb_qh[device->controller][USB_QH_INDEX(endpoint_address)]; }
usb_queue_head_t* usb_queue_head( const uint_fast8_t endpoint_address ) { return &usb_qh[USB_QH_INDEX(endpoint_address)]; }