From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: marcellin <marcellin.fotze@domain.hid>
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai-help] interrupt wait problem
Date: Tue, 14 Mar 2006 14:28:30 +0100 [thread overview]
Message-ID: <17430.50430.76997.550310@domain.hid> (raw)
In-Reply-To: <44168DA0.3090506@domain.hid>
marcellin wrote:
>
>
> Hi, i'm trying to use the RealTimeClock IRQ 8, with a xenomai real time
> task. I configure the RTC to have a periodic interrupt on it with the
> linux standard API, and it works. After when i want to catch the IRQ 8
> in a xenomai real time task i have a problem a error ( " Operation not
> permitted ") with the " rt_intr_wait " fonction. Is there a special
> initialisation or configuration to make with the kernel or Xenomai ?
As mentioned by Jan, rt_intr_wait() and generally every service which
block its caller may only be called from a real-time task, i.e. a task
created with rt_task_create() or made real-time with rt_task_shadow().
Also note that Xenomai system timer allow high frequency periodic
tasks without resorting to the RTC, see rt_task_set_periodic() and
rt_task_wait_period() services.
--
Gilles Chanteperdrix.
prev parent reply other threads:[~2006-03-14 13:28 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-14 9:32 [Xenomai-help] interrupt wait problem marcellin
2006-03-14 13:23 ` Dmitry Adamushko
2006-03-14 13:28 ` Gilles Chanteperdrix [this message]
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