return ErrorCode;
        }
 
-       Endpoint_Write_Byte(Data);
+       Endpoint_Write_8(Data);
        return ENDPOINT_READYWAIT_NoError;
 }
 
        if (Endpoint_IsOUTReceived())
        {
                if (Endpoint_BytesInEndpoint())
-                 ReceivedByte = Endpoint_Read_Byte();
+                 ReceivedByte = Endpoint_Read_8();
 
                if (!(Endpoint_BytesInEndpoint()))
                  Endpoint_ClearOUT();
                {
                        .bmRequestType = (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE),
                        .bRequest      = CDC_NOTIF_SerialState,
-                       .wValue        = 0,
-                       .wIndex        = 0,
-                       .wLength       = sizeof(CDCInterfaceInfo->State.ControlLineStates.DeviceToHost),
+                       .wValue        = CPU_TO_LE16(0),
+                       .wIndex        = CPU_TO_LE16(0),
+                       .wLength       = CPU_TO_LE16(sizeof(CDCInterfaceInfo->State.ControlLineStates.DeviceToHost)),
                };
 
        Endpoint_Write_Stream_LE(&Notification, sizeof(USB_Request_Header_t), NULL);