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Hi,
I'm trying to understand the usage of feature report descriptor in USB HID. I couldn't understand the purpose of feature report descriptor.
Can you please help.
Well, there are basically three options. - One is that you expect someone to explicitly write lots of text to explain. - Another is that you locate information already available. - Pay someone to teach.
Alternative two must be the clearly best choice. And it generally starts with Google or similar.
A suitable search might be: what is the purpose of usb hid descriptor
Then you might find pages like this: eleccelerator.com/.../
But you would find quite a lot of other pages too.
It's way faster to search for information than to wait for someone else to step in and produce the information. The great thing with Internet and search engines is that the information is available 24x7 all year around. So even late on the christmas night, you might locate the information you need.