On Donnerstag, 17. März 2022 19:41:19 CET arnyt...@seznam.cz wrote: > S. W. This is cool! I was looking at the USB TMC class: https://www. > tmatlantic.com/…919 > (https://www.tmatlantic.com/encyclopedia/index.php?ELEMENT_ID=13919) > > In theory it should be much faster than CDC class because it uses BULK > transfers insread of CONTROL transfers. Bulk transfers can have multiple > packets in the frame, > so threoretically it should use most of the USB 2.0 FS bandwith, which is 12 > Mbit/s.
USB CDC uses BULK transfers for the data as well, and INTERRUPT for signaling change of status lines. Only HID *may* use CONTROL only transfers (BULK IN/OUT is optional). Regards, Stefan -- Stefan Brüns / Bergstraße 21 / 52062 Aachen home: +49 241 53809034 mobile: +49 151 50412019
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