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Author Topic: D3xx - Determine Pipe direction from ID number  (Read 2396 times)


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D3xx - Determine Pipe direction from ID number
« on: December 04, 2020, 08:36:53 PM »

Hi all,

I observed that the ID numbering for IN pipes seen from the PC host side seem to start with 0x80.
(see attached screenshot)

Is it safe to use the highest ID bit as a direction flag?