CCS/TM4C1294NCPDT: usb_host_msc bulk endpoint wMaxPacketSize has wrong value

Tool/software: Code Composer Studio

HI TI,

I am starting on CCS example project "usb_host_msc" for both ek-tm4c1294xl and am335x starter kit respectively. The example projects from starterware and tivaware quite similiar, and both work fine with usb memory stick.

However, I happen to notice bulk endpoint wMaxPacketSize in tivaware/ek-tm4c1294xl is 64, while it is 512 in starterware/am335x starter kit. You may monitor this value through function static void * USBHMSCOpen(tUSBHostDevice *psDevice) inside usbhmsc.c

I plug this memory stick into Ubuntu laptop, and find the value is 512 (which is actually defined by USB standards)

      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               2
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x84  EP 4 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               2

Please help to clarification. Thanks in advance

Mike