How can I use USBH2.0Lib with FreeRTOS?

[Super-Thomas]

Dear Nuvoton,

I want to test that UMAS function in FreeRTOS.
So I was build project for test include USBH2.0Lib and FreeRTOS and then called three function in my project.

fsInitFileSystem();
InitUsbSystem();       
UMAS_InitUmasDriver();

But it seems system halt when called InitUsbSystem().
How can I use USBH2.0Lib with FreeRTOS?

Regards,
Thomas