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Update 'USB config & command protocol'

Triss 2021-07-13 02:31:01 +00:00
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USB-config-%26-command-protocol.md

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# Wire protocol
The device has a "configuration and command" USB *vendor* interface, typically at interface number 0 (depending on the mode), and endpoint number 1.
The device has a "configuration and command" USB *vendor* interface, it has subclass number 42, and protocol number 69. The VID/PID pair is currently cafe:1312. as you may have noticed, these magic identification numbers are still temporary.
The host sends a message and the device sends a reply. The device never initiates a transfer.