Hi Shawn et al I see your Pico logic analyser has made Hackaday:
https://hackaday.com/2022/03/02/need-a-logic-analyzer-use-your-pico/#comment-6452788 Well done! I guess the mods will come in rapidly now. Tony On Fri, 18 Mar 2022 at 04:44, Chris Dreher <chrisdre...@hotmail.com> wrote: > Very minor correction: HID *may* use CONTROL only transfers and INTERRUPT > IN/OUT is optional (HID does not use BULK). However, this is a little > off-topic from the main point of this discussion. > > -Chris > > ------------------------------ > *From:* Stefan Brüns <stefan.bru...@rwth-aachen.de> > *Sent:* Thursday, March 17, 2022 6:11 PM > *To:* sigrok-devel@lists.sourceforge.net < > sigrok-devel@lists.sourceforge.net> > *Subject:* Re: [sigrok-devel] New sigrok driver for homemade logic > analyzer > > 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://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.tmatlantic.com%2Fencyclopedia%2Findex.php%3FELEMENT_ID%3D13919&data=04%7C01%7C%7Cc43865cb7a514a16fef808da087faa9a%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637831641697992798%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=ZB%2F0pa7WAdXHvRqf1QuNyP4puD3WWyCaZzawFWFFoVQ%3D&reserved=0 > ) > > > > 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 > _______________________________________________ > sigrok-devel mailing list > sigrok-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/sigrok-devel >
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