On 20.02.2024 08:49:26, Dr. Michael 'Mickey' Lauer wrote: > Hi Marc, > > >> > >> Sounds pretty cool. Our design is based on an ESP32-S3 though, so I > >> have to duplicate that effort. Is there some kind of USB protocol > >> definition for what gs-usb expects or do I need to learn that from the > >> implementation? > > > > I've put together a very rough summary of the driver's side of view: > > > > https://gist.github.com/marckleinebudde/99f72d9db67accf08cc6efa367cfe54b > > > > Feel free to update. > > Wow, that’s very kind of you! :) > Later this year I’ll take this blueprint to implement the necessary > changes in our firmware. I’ll enhance / update your summary > as I’ll go. If you discover any odd points or areas for improvement in the USB protocol, please let us know. Currently, TX-complete sends the _entire_ structure back to the host, which is quite an overhead, especially for CAN FD frames. We're working on a "short-tx-complete" feature. Marc -- Pengutronix e.K. | Marc Kleine-Budde | Embedded Linux | https://www.pengutronix.de | Vertretung Nürnberg | Phone: +49-5121-206917-129 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-9 |
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