Well, from the halscope capture, the index signal looks quite clean. it is digitally generated anyways.
Thanks a lot Jon for your support and insight on all this. I may try to mod the ppmc driver to output the time at witch the trigger was received. But I have other things on my plate first. On Thu, May 17, 2018 at 11:23 PM, Jon Elson <el...@pico-systems.com> wrote: > > On 05/17/2018 11:21 AM, Maxime Lemonnier wrote: >> >>> Hi Jon, >>> >>> Thanks for the clarifications, and sorry I forgot to mention your >>> critical >>> involvment when I asked the question. Also, who is this formal mr. >>> Lemonnier guy?, I'm Maxime :) >>> >>> >From what I read, I should have " set the encoder-index to true, and >>> then >>> watch for it to go false"? >>> >>> That is not what I did, I use encoder.07.index as an input, I don't write >>> it. When I detect *index* goes to 1, I compute the delta, and wrtie 1 to* >>> index-enable* so the encoder can be reset on next trigger. It is >>> important >>> for to be certain I'm doing it right. >>> >>> This ought to behave the same way. encoder.xx.index will always show a >> 1 for only one servo cycle when it detects a rising edge on the Z input. >> If encoder.xx.index-enable was 1 on the previous servo cycle, then it will >> be written to 0 at the same time that index gets the 1. >> >> So, either of these methods should trigger you to be able to record the >> position out of that encoder at that time. >> >> The only way this could get fouled up is if there is a slow transition or >> ringing on the Z signal. So, you want to make sure that is not getting any >> extra edges, either rising or falling. >> >> Jon >> > > > ------------------------------------------------------------ > ------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
