Am Sonntag, 27. Dezember 2020, 13:09:20 CET schrieb Sonali Warunjikar: > On Sun, Dec 27, 2020 at 11:32:10AM +0100, Karsten Hilbert wrote: > > Very nice ! > > I figured out more things, mainly the answers to confusions I had in the > last mail. The answers to my questions are: > > Host always initiates the interaction. It is called 'i' if host is seeking > information and not sending any data. It is called 'o' if host is sending > data to the device. The 'o' requests are associated with data. > > I am now able to play back the entire control sequence from os > initializing the device generically to the app initializing it. I'll > systematically write this code as a playback a recorded usbmon trace > (untruncated one, thanks to the citation in previous post). > > Then 2 things remain: > > - non control interactions (mainly I and B type for this device) > > - figuring out variable part of the whole interaction and parameterizing > it > > Will update the thread when some progress is made. Looks like as far as > the basic knowhow is concerned, I may not have too many more questions.
Sounds good. Persistence will pay off.