On Tue, 20 Dec 2011, andy pugh wrote: > Date: Tue, 20 Dec 2011 14:18:10 +0000 > From: andy pugh <bodge...@gmail.com> > Reply-To: EMC developers <emc-developers@lists.sourceforge.net> > To: EMC developers <emc-developers@lists.sourceforge.net> > Subject: [Emc-developers] Encoder Diagnostics > > After finding that my spindle encoder had drifted, and was counting > 686 of the 720 counts, leading to rather unconveninally-pitched > threads, I find myself wondering if it would be sensible for the > encoder function to set a pin to "counts since last index" on every > index event. This could be monitored in HAL to raise a warning. > Or is this a use-case for the "latched" pins which are only partly > explained in the docs. (and which don't exist for Mesa encoders) >
low level hardware wise, Latch_on_index is avalable on Mesa Encoder counters so could be used to verify count. This feature is used with "home on index" so would have to be shared with homing, that is, mod encoder count checking would need to be disabled while homimg. Theres also a sticky quadature error bit that will detect things like both A and B changing at once > > -- > atp > The idea that there is no such thing as objective truth is, quite simply, > wrong. > > ------------------------------------------------------------------------------ > Write once. Port to many. > Get the SDK and tools to simplify cross-platform app development. Create > new or port existing apps to sell to consumers worldwide. Explore the > Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join > http://p.sf.net/sfu/intel-appdev > _______________________________________________ > Emc-developers mailing list > Emc-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-developers > Peter Wallace Mesa Electronics (\__/) (='.'=) This is Bunny. Copy and paste bunny into your (")_(") signature to help him gain world domination. ------------------------------------------------------------------------------ Write once. Port to many. Get the SDK and tools to simplify cross-platform app development. Create new or port existing apps to sell to consumers worldwide. Explore the Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join http://p.sf.net/sfu/intel-appdev _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
