用USBview得到的数据好像有问题？块传输的包大小怎么是:0x0001和 0x4002??而我设置的是64啊

Device Descriptor:
bcdUSB:             0x0100
bDeviceClass:         0xDC
bDeviceSubClass:      0x00
bDeviceProtocol:      0x00
bMaxPacketSize0:      0x10 (16)
idVendor:           0x0471 (Philips)
idProduct:          0x0666
bcdDevice:          0x0100
iManufacturer:        0x00
iProduct:             0x00
iSerialNumber:        0x00
bNumConfigurations:   0x01

ConnectionStatus: DeviceConnected
Current Config Value: 0x01
Device Bus Speed:     Full
Device Address:       0x02
Open Pipes:              4

Endpoint Descriptor:
bEndpointAddress:     0x81
Transfer Type:   Interrupt
wMaxPacketSize:     0x0010 (16)
bInterval:            0x0A

Endpoint Descriptor:
bEndpointAddress:     0x00
Transfer Type:     Control
wMaxPacketSize:     0x0507 (1287)
wInterval:          0x0301
bSyncAddress:         0x10

Endpoint Descriptor:
bEndpointAddress:     0x00
Transfer Type:        Bulk
wMaxPacketSize:     0x0001 (1)
wInterval:          0x0000
bSyncAddress:         0x07

Endpoint Descriptor:
bEndpointAddress:     0x05
Transfer Type:        Bulk
wMaxPacketSize:     0x4002 (16386)
wInterval:          0x0A00
bSyncAddress:         0x00

可能是你固件方endpoint描述符有问题，你检查一下。