ISRs and rtems_task_wake_after
joel.sherrill at OARcorp.com
Fri Feb 15 13:21:14 UTC 2002
"Aaron J. Grier" wrote:
> just a reality check. I've been banging on the same chunk of code for
> two days straight now and I think I finally figured out what I was doing
> you cannot call rtems_task_wake_after from within an ISR, correct?
Correct. task wake after is for tasks to delay. ISRs are not tasks.
> IE "never never never block within an ISR" is a rule I should carve into
> the top of my monitor so I'm reminded of it every day, yes?
That's the 1st rule of embedded programming. Quickly followed with
"don't take too long in an ISR" :)
> Aaron J. Grier | Frye Electronics, Tigard, OR | aaron at frye.com
> "In a few thousand years people will be scratching their heads
> wondering how on earth the first computer was invented and
> bootstrapped without a prior computer to do it with."
> -- Chris Malcolm, on comp.arch
Joel Sherrill, Ph.D. Director of Research & Development
joel at OARcorp.com On-Line Applications Research
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