On Sunday 15 July 2012 11:10:43 andy pugh did opine: > On 15 July 2012 14:45, Gene Heskett <ghesk...@wdtv.com> wrote: > > But the internal calculations for velocity etc are done at the servo > > threads granularity of nominally 1 millisecond. So there is no chance > > of the figures being accurate when the count may be up to a > > millisecond old. > > The counts shouldn't be more than a thread-dither old (10uS or so). > The calculation function reads the latest count from the base thread > functions (possibly a base-thread old). > > The FPGA in the Pico card being discussed here ought to make an even > better job at being up-to-date.
www.mesanet.com is unreachable this morning. :( Cheers, Gene -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) My web page: <http://coyoteden.dyndns-free.com:85/gene> is up! Q: What do monsters eat? A: Things. Q: What do monsters drink? A: Coke. (Because Things go better with Coke.) ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users