On Tue, 1 Feb 2005 07:55:20 +0100, Wouter van Ooijen <wouter@voti.nl> wrote:

> > while (TRUE)
> >    {
> >     if (DO_IT_NOW)
> >       pid_calculations();
> >    code_a();
> >    code_b();
> >    code_c();
> >    code_d();
> >    }
> > 
> > since the DO_IT_NOW flag could be set at any time by
> > the interrupt (or the TMR1IF flag), the PID code could run
> > immediately, or after all the other routines, or...
> 
> But that's because you want your code to do too much. If sum of your pid
> + code_a + code_b etc execuation times takes more time than the timer
> interval you should not execute all code_a + code_b + code_c + code_d,
> but for intsnace only one of them (round robin fashion), or transform
> one or more to a state machine that speads the execution time over more
> than one call.

Now you're saying I need to change the requirements.  That's something
you need to take up with my employer.

Bill
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