John Kasunich wrote: > Sebastian Kuzminsky wrote: >> There's a judgement call here, and I seek your advice. Is 25 >> microseconds too long to run with interrupts off? ... > It might seem like an overly pessimistic view, but I'd rather forgo the > fast GPIO updates on the EPP connected Mesa cards, than risk introducing > latencies that could affect completely unrelated stuff.
Nicely explained John, thanks. I'll drop that branch of development. No stand-alone fast GPIO for the 7i43. If you turn off all the servo and stepper channels and just use it for the 48 gpios, the refresh rate will be about 15 KHz. As you add more and more stuff in addition to the gpios the refresh rate drops. With 24 GPIOs and 4 servo channels, the update rate is about 5 KHz. -- Sebastian Kuzminsky Cryogenic travel has improved since then... I woke screaming in a translucent box. “There, there,” said the box. “Everything will be all right. Have some coffee.” -- Ken Macleod, "Who's afraid of Wolf 359" <http://outofthiseos.typepad.com/blog/files/KenMacleodWhosAfraidofWolf359.htm> ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
