Lars Segerlund wrote: > check http://osadl.org .. if you can find some system resembling the > beagle board in the test rack, they have a number of ARM versions. > If not ... send a beagleboard :-D ...... > > Anyhow, latency will not be better than what osadl are getting, > sometimes a system gets worse latency from a driver, once found you > can always fix the driver. > > EMC on the beagle board would be 'super nice' ... but I don't think > the latency from RT-Preempt on ARM will be good enough for servo > loops, it might be good enough for 'rep-rap' and similar ... ie. > steppers ... > I've already paid for one BeagleBoard and sent it to a developer who didn't make much progress with it. At least, he still isn't finished.
One problem with the OMAP chip they use in the Beagle is the GPIO is only updated every 240 ns, although the CPU is about 40 times faster than that. I was certainly not expecting this bottleneck, apparently a power-saving feature. Jon ------------------------------------------------------------------------------ EditLive Enterprise is the world's most technically advanced content authoring tool. Experience the power of Track Changes, Inline Image Editing and ensure content is compliant with Accessibility Checking. http://p.sf.net/sfu/ephox-dev2dev _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
