feat: separate constructor for UsbDevice and UsbBusAllocator

src/types/usb_device.rs

@@ -83,14 +83,19 @@ pub(crate) const ONE_MS_16_MGHZ: u32 = 16000;
 
 impl<const L: usize> UsbDevice<L> {
     #[inline]
-    pub fn create_usb_allocator(pll: PLL, usb: USB_DEVICE) -> UsbBusAllocator<Self> {
-        UsbBusAllocator::new(Self {
+    pub fn new(pll: PLL, usb: USB_DEVICE) -> Self {
+        Self {
             pll: Mutex::new(pll),
             usb: Mutex::new(usb),
             ep_table: [USBEndpoint::default(); L],
             pending_ins: Mutex::new(Cell::new(0u8)),
             dpram_already_used: 0,
-        })
+        }
+    }
+
+    #[inline]
+    pub fn into_usb_allocator(self) -> UsbBusAllocator<Self> {
+        UsbBusAllocator::new(self)
     }
 
     #[inline(always)]