[okl4-developer] okl4 system call or API about "delay" and "interrupt"

[Jorge Torres]

Hi kashin,

Having a delay is very simple and clean, simpler than saying it,

#include <interfaces/timer_client.h>
#include <timer/timer.h>

timer_t tim, tim_ret;
int r;

timer_init();
tim = timer_create();
r = timer_request(tim, MICROSECS(10), TIMER_ONESHOT);
tim_ret = timer_wait();

while(tim_ret!=tim);

And that's it, or you can always go dirty with for(i=0;i<N;i++);

Hope it helps,

Cheers,

Jorge
On Nov 29, 2007 10:19 AM, kashin Lin <kashin08 at gmail.com> wrote:

> Hi,
>
> thanks for your reply.
>
> the reason of the need for delay is that :
> i want to add some milliseconds delay between contiguous hardware
> configuration instruction.
> so maybe it's no need to use this powerful method  such as timer.
> so are there any alternative way to achieve this goal?
> p.s. where are those examples use timer server i can refer to?
>        ( i want to learn how to use timer too )
>
>
>
> another questions for register irq handler:
> if i want to use function_A as irq #B's handler
>
>        thread_ref_t thrd;
>        thrd = thread_create_simple( function_A, NULL, 100 );
>        hardware_register_interrupt( thread_l4tid(thrd), B );
>
> is the right way to register it?
>
>
>
>
> 2007/11/29, Jorge Torres < jorge.torres.maldonado at gmail.com>:
>
> > Hi,
> >
> > You can use iguana's timer server, there are some examples, at which you
> > can look at,
> >
> > Cheers,
> >
> > Jorge
> >
> > On Nov 28, 2007 2:49 AM, kashin Lin <kashin08 at gmail.com> wrote:
> >
> > > Hi,
> > >
> > > i wonder know if OKL4 or Iguana has any system call or API that can
> > > delay
> > >
> > > several msec,( similar to uDelay or mDelay in linux kernel). and how
> > > to use it?
> > >
> > > ex: which header file i should include, and what function i can call?
> > >
> > >
> > > another quetion is about request IRQ:
> > >
> > > in linux kernel there is a functin named request_irq whitch can map a
> > > IRQ# to a handler routine.
> > >
> > > i noticed there is a function named hardware_register_interrupt in
> > > iguana, but the parameters are
> > >
> > > IRQ# and a thread id. it doesn't make sense for me. why not a handler
> > > routine instead of a thread id?
> > >
> > > if i want to rigster a handler routine for a IRQ#, how should i do?
> > >
> > > _______________________________________________
> > > Developer mailing list
> > > Developer at okl4.org
> > > https://lists.okl4.org/mailman/listinfo/developer
> > >
> > >
> >
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.okl4.org/pipermail/developer/attachments/20071130/1eaeb39f/attachment.html