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+--- Forum: HP Prime (/forum-5.html)
+--- Thread: Interesting....reverse engineered USB protocols (/thread-8991.html)
Interesting....reverse engineered USB protocols - webmasterpdx - 09-06-2017 04:15 AM
...for the HP Prime...
https://github.com/eried/PrimeComm
RE: Interesting....reverse engineered USB protocols - webmasterpdx - 09-06-2017 04:23 AM
This is also related to it...
http://services.ried.cl/primecomm/Help/?topic=html/4c2db46f-2e91-7461-ee2e-68962685662e.htm
RE: Interesting....reverse engineered USB protocols - Tim Wessman - 09-06-2017 02:24 PM
Its changed quite a bit since then. The underlying commands not so much, but we discovered that the windows HID driver just silently loses packets on occasion. Thus there is not a layer on top that will bounce back and forth between the connkit and usb calculator to request packets that were missed.
I believe the original as implemented there will still work, but it won't be as reliable or take advantage of later features like compression during transmission and similar.