Karl Reichert wrote: >> Karl Reichert wrote: >>>> Karl Reichert wrote: >>>>> When using the tdmacfg-tool, one can specify an offset. Reading >>>> TDMA-Spec line 568: >>>>> "If <offset> is given, the time slot is added or modified to send data >>>> with the specified offset in microseconds relative to the scheduled >> cycle >>>> start [...]" >>>>> To my understanding this means, doing 'tdmacfg rteth0 slot 0 0' means >>>> that you would override the sync frame slot. Or is there a mistake in >> the >>>> spec and one should read: >>>>> "[...] specified offset in microseconds relative to the scheduled sync >>>> frame start [...]" >>>> >>>> The cycle start is defined by the sync frame. No sync frame, no cycle. >>>> Thus the former implies the latter. So you cannot use the "slot" >> command >>>> of tdmacfg to manipulate sync frames, there is "master" for this (also >>>> to define a backup master sync frame slot). >>>> >>>> Jan >>>> >>> Okay, thanks, so it makes sense. >>> >>> When I execute this command, I get an error because I don't have the >> device /dev/rteth0. When is it created or do I have to create it by hand >> (with >> which parameters)? >> >> Assuming you mean /dev/rtnet -> see README. >> >> Jan >> > No, /dev/rtnet I created as mentioned in README. I'm talking about rteth0 and > rtlo. They don't exist, although I configured RTnet (make menuconfig) to also > build RTcap and RTloopback support.
And did you load those drivers as README tells you...?
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