On 15 July 2010 17:06, Chris Radek <ch...@timeguy.com> wrote:
> But really I think the special handling of an encoder event belongs in > the encoder driver, not ddt. I have had a quick look at the Motenc memory map and the Motenc HAL driver, and basically it looks like all the Motenc does is count and reset/latch. There is no velocity or edge timestamping. So, any velocity calculations would have to be done in the hal driver, and thus in the servo thread and only on the basis of what is known by that driver. This is likely to lead to a lack of precision when the edges are only few servo threads long, or conversely there are only a few encoder edges per servo cycle. However, modifying the driver (which is rather simple) makes a lot more sense that writing the exact same code in a comp. -- atp ------------------------------------------------------------------------------ This SF.net email is sponsored by Sprint What will you do first with EVO, the first 4G phone? Visit sprint.com/first -- http://p.sf.net/sfu/sprint-com-first _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
