DFU Interface Descriptor

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DFU Interface Descriptor
Offset Field Size Value Descripton
0 bLength 1 09h Size of this descriptor,in bytes.
1 bDescriptorType 1 04h INTERFACE descriptor type.
2 bInterfaceNumber 1 Number Number of this interface.
3 bAlternateSetting 1 00h Alternate setting. Must be zero.
4 bNumEndpoints 1 00h Only the control pipe is used.
5 bInterfaceClass 1 FEh Application Specific Class Code.
6 bInterfaceSubClass 1 01h Device Firmware Upgrade Code.
7 bInterfaceProtocol 1 01h Runtime protocol.
8 iInterface 1 index Index of string descriptor for this interface.

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